Beautiful lives of the stars

by JUNG JUN HYUK.
Students majoring in CT at Seoul National University of Arts

The work started out as a curiosity about what would happen when we gather and visualize the luminance data that shows the birth and death of stars. A star is another name for self-illuminating objects that provides mystery to the night sky. The stars are formed from interstellar matter such as gas and dust when these matters coalesce in the denser regions of interstellar space. Stars born in this way express their existence and mystery by emitting light, as they live through the pre-main sequence, main sequence, and post-main sequence stages, ending in death. In the work, the luminosity data of stars repeatedly appear and disappear as waves. If you observe the luminance data over several hours, you can see that they maintain a similar pattern and change regularly. As such it is possible to express the beauty of the stars’ lifetime through data visualization. *Luminosity: The brightness of a star according to the intensity of light emitted over a certain period of time. This brightness can be obtained from the radius and the surface temperature.View video on YouTube

The origin of the earth

by The debate about the origin of life on Earth has been going on for a long time. To support the panspermia hypothesis that life came from other celestial bodies, a research team from the Tokyo University of Medicine observed how microorganisms can survive in outer space for three years from 2015 on the International Space Station. As a result of the experiment, it was verified that microorganisms can survive for a long time in outer space. This means that the origin of life on the Earth possibly began when microorganisms migrated between planets by sticking on meteorites. Microorganisms have been the only living organisms for half of Earth's history and are fundamental to the birth and survival of all living organisms. However, we have identified less than 1% of the microorganisms with a light microscope. Unraveling the mysteries of microbes may therefore be one way to approach the origins of life on the Earth.

A Mother's Hands

by CLARISSA ELIZABETH MARIA
intern at CSLM (Center for Soft and Living Matter)

This image was taken using the transmission electron microscope (TEM), in the process of optimizing liposomes sample preparation. Liposomes will typically dry up and form circular structures. However, in some rare cases, they might break and form unique amorphous structures. If one were to look closely, this structure looks like hands. Not just any hands, but a mother's embracing hands. A mother's hands are gentle yet powerful at the same time. They are more than powerful to protect us from dangers, and they are also the gentlest hands where we run to, they are the hands that are always wishing for our safety and happiness, no matter how many miles apart. As an international student staying thousands of miles away from home, it feels reassuring to know that even the nanoscale world is trying to remind me that my mother will always wish for my safety and happiness.

This is not a tree.

by Kang Seok
Ph.D. students at KAIST Graduate School of Medicine / researcher at IBS Vascular Research Group

The metaphors using trees have been widely used in most cultures across time and place. In Norse mythology, Yggdrasil was the source of the universe and life. In the Garden of Eden in the Bible, there were the Tree of Life and the forbidden fruit. There were also aging trees of Seonangdang in the old village of Korea. A tree is rooted in the ground and extends its branches and meets the sky. Since the sky begins at the end of the tree, mankind dreamed of the sky through the tree. In a horizontal world dominated by gravity, the vertical axis of the tree was a passage connecting the different dimensions of the earth and the sky. It's like Jack climbing the beanstalk to the giant's house. The inside of the donut is the same as the outside. The human digestive system starts from the mouth, passes through the esophagus, stomach, small intestine, large intestine, and then goes to the anus in the form of a single tube. The essence of the digestive system is nothing more than a cylinder with a hole in the middle, with donuts hanging down. (In other words, donuts and the digestive system are isomorphic.) So the inside of the mouth is the same as the outside of the body. Food consumed by humans is broken down into its components through the process of digestion. However, it is still located outside the body. The outer universe is distinct from the inner universe. This work was obtained using a confocal fluorescence microscope after staining blood vessels and lymphatic vessels of the mesentery (a thin membrane connecting the intestines and our body) of a 5-day-old mouse. Blood vessels supply oxygen and nutrients to the intestine, and conversely, lymphatic vessels absorb the digested nutrients as they reach the intestine. Substances from outside the body move into the body through lymphatic vessels. In other words, the lymphatic vessel is a passage that connects the different universes (phases), inside and outside. Through this, the inner and outer universe becomes one connected universe as the boundaries disappear. Just as a tree connects the sky and the earth, lymphatic vessels connect the ‘inside’ and ‘outside’. Whether anyone who sees this work associates it with a tree or perceives it directly as the anatomical structure of lymphatic vessels, the essence of this work is neither the tree nor lymphatic vessels. This is the cosmic gate that connects the different dimensions.

Blossom of snow

by Park Junho
Professor Kim Cheol-joo of Pohang University of Science and Technology, Ph.D. in the lab

This image expresses the scene where the pine leaves that endured the cold winter meeting again with the new spring flowers that are flying under the warm spring sunlight. The pine leaves and the color of the cold air on the left represent winter, while the yellow flowers and bright colors represent the early spring. How these yellow flowers blend in with the image of a pine tree appears to represent how the pine tree overcame a cold difficult winter and gets to see a warm spring once again. This scene is a photomicrograph that I accidentally obtained while synthesizing organic semiconductors. It was taken back during a personally difficult time period at the beginning of my doctoral program, due to repeatedly failing experiments. At the time, the goal was to make a clean film, but after it was confirmed that the film grew in a wire-like formation due to the bonding anisotropy of the organic layer, I felt despondent due to failing another experiment. However, because the picture was so beautiful, I took a picture and stored it deep in the data file. Two years have passed since then, and now after successfully completing the research and writing my paper, I was very happy. When I encountered this picture again, I was reminded of the difficult and hopeless times in the past. I realized that I am now enjoying the spring, and I wanted to show this image to the people to other people who may be living through a hard time right now. What is unusual is that the leaves of these pine trees are not broken, but are all connected as one. While each leaf boasts its own individuality, they are all connected and appear like a single big flower. The first thing you may notice in the photo may be the shape of the yellow spring flower, but if you keep looking, you will notice the huge pine leaves displaying their beauty in their strength. If you think about it, these seasonal changes are similar to our lives. Due to the coronavirus, our lives may have changed for the worse over the past year. However, as spring always comes after winter passes, I hope that through this photo, we hope that our daily lives will be able to return to normal in the near future.

smell of the sea

by Lee Junhyuk
Department of Bioscience and Neurology at the Korea Institute of Science and Technology

The brain works hard even when we perform simple tasks such as smelling an object. In particular, the role of the olfactory cortex is important for 'recognition' beyond 'sensing' odors. This image was obtained while expressing synaptophysin mCherry-eGFP in the olfactory cortex via fluorescence staining to perform an observational study of the astrocytes in the region. This image, taken at the beginning of summer, is reminiscent of the beach. I think this is an image that represents my desire to go on vacation to the beach while being tired of repeated labwork this year. Even at this moment, I can already imagine the smell of the sea, so I named this work the scent of the ocean. I hope I can go to the beach soon.

hippocampal cleanup

by Lee Se-young
graduate student at the Korea Institute of Science and Technology

In the hippocampal synapse, necessary synapses are created as memories are formed, while unnecessary synapses disappear. However, it is still not well known whether this process is important for memory formation and through which mechanism it occurs. To study this question, the researchers hypothesized that astrocytes, one of the glial cells, would "consume" unnecessary hippocampal synapses to eliminate them. In this image, the normal synapses show green color (red mCherry and green eGFP), while the consumed synapses show red color (green eGFP is degraded and only red mCherry remains), and astrocytes display white fluorescence. This research revealed that in order to form new memories, the astrocytes must eat and destroy unnecessary synapses. This knowledge suggests that sometimes, we should take a break rather than just move forward.

Lost in the forest of love

by Choi Cham, Park Sooah, Kwon Yoonhee
Optosken Technical Support/Team members belong to UNIST Research Support Headquarters

A contrast agent is essential for conducting a CT scan of soft tissues. Contrast agents need to be administered to the tissue without clogging blood vessels. By administering a contrast agent to the mouse liver, which has the size of a fingernail, it became possible to observe even the microscopic blood vessels inside the liver. The liver capillaries show up as the shape of a heart from a certain angle. This inspired us to submit this image as artwork. This work expresses the snowy forest of love, which is easy to get lost in. An additional touch that adds a woman who is sitting and crying on one side and a man who is wandering in search of such a woman on the other side could allow for a more in-depth expression.

end of extraterrestrial planets

by Kang Juwan, Seo Seongmin, Lee Sang Eon, and Kim Seowi
Gyeongnam Science High School student.

The light that illuminates our daily lives is made up of many different wavelengths. Of these, visible light, which we can see and feel, is the most beautiful gift that nature has given us. The white contains light red, yellow, and green lights which have different characteristics such as different diffraction angles. The three primary colors of light pass through a narrow gap and deflect each other slightly, creating a variety of new colors. On the backside of the CD, which is a representative diffraction grating plate, the light is reflected by numerous thin gratings and causes interference, showing colorful patterns. Similar to CD, the grating film also consists of many thin gratings. The visible light with a wavelength of 400 nm to 700 nm spreads widely on the diffraction grating films with several thousand thin grooves per 1 cm on a transparent plate. To observe the pattern more easily, a hemisphere bowl of water was filled with water and oil bubbles so that vivid colors can be displayed on the surface. The red light passing through the white oil bubbles mixed in the water looks like a gas giant planet with active convection at its surface.

electric noodles

by Ahn Youngjun
Daejeon Metropolitan Office of Education Daejeon Doan Elementary School

What comes to mind when you hear the word 'Tesla'? Many of you are probably thinking of an American electric vehicle company. In fact, Tesla is named after Nikola Tesla, who invented the 'Tesla coil'. A Tesla coil is a device that converts low voltage into high voltage. This device allows you to create voltages as high as tens to millions of volts. By comparison, the voltage we use at home is 220V. The high-voltage electricity in the Tesla coil produces a loud noise and light when it is discharged. This principle is the same as the thunder and lightning we experience in nature. The picture above is a picture of electricity being discharged from the Tesla coil and heading towards the discharge sphere. Its principle is the same as lightning, but the discharge occurs so quickly that it is difficult to observe its appearance. Therefore I decided to take a picture to show my students. The above Tesla Tower is a photo taken at the Daejeon Science Experience Center operated within the Daejeon Educational Science Research Institute under the Daejeon Metropolitan Office of Education. (This is the institution I worked for from 2019 to 2020.) The Tesla Tower (called the Tesla Tower because two coils stand like twin towers) located at the entrance of the Basic Science Museum is built to showcase the principle of the Tesla coil. It is also possible to play music by controlling the discharge sound. In order to take a good picture of the discharged light, it was necessary to turn off all the surrounding lights. The photo was taken using Sony A9, 90mm macro (close-up) lens, F16, with a 1/20 second shot. At first, I shot the picture with a higher shutter speed, but it was difficult to see the trajectory, so I had to incrementally lower the shutter speed. The result was a picture that resembled the noodles at a Chinese restaurant. With the 'electric noodles' above, we hope many kids will be more interested in science!

chrysanthemum garden

by Kim Kwangbae, Song Ohsung, Kim Hojun
Kim Kwang-bae, Information Materials Research Center, Department of Materials Engineering, Seoul National University

This image was obtained while developing a perovskite solar cell during the crystallization process of the perovskite layer on the carbon layer. The magnified image is reminiscent of a garden full of chrysanthemum flowers. A solar cell is a material that uses solar energy and converts it into electrical energy, and it is being widely studied as a potential renewable source of energy. In particular, perovskite solar cells are classified as third-generation solar cells, since they have superior price competitiveness compared to conventional silicon solar cells and have a simpler manufacturing process. In addition, perovskite has a three-dimensional crystal structure composed of organic cations, metal cations, and metal anions. In this study, a perovskite solar cell device with a glass/FTO/TiO2/ZrO2/perovskite/carbon electrode structure was fabricated. Perovskite was produced by preparing a solution of inorganic PbI2 and organic MAI and heat-treatment at 100℃ for 30 minutes after dropping the solution. This image captures a phenomenon where the crystal growth rate of PbI2 and MAI are different during the perovskite crystal formation process, resulting in the excess MAI layer. When PbI2 and MAI are grown in a 1:1 ratio, a perovskite crystal structure called MAPbI3 is formed. The image of a chrysanthemum garden, captured via optical microscopy, arose due to the difference in the growth rate and ratio of crystal within a perovskite solar cell, and it is considered a work of art. The modern research environment is increasingly focusing on incremental improvement in efficiency by testing a minor change in the composition within a given range using a known process. This perovskite chrysanthemum garden is also an image that was obtained by chance during the process of finding the optimal perovskite layer formation conditions, which was then submitted as an artwork.

distortion of time and space

by Lee gunhee
Busan Science High School

This photograph shows a model of a black hole was floated on the water, which bends the background under the water due to surface tension. Normally, the pen should not be visible due to being hidden behind the black hole model, but the surface tension created by the black hole model causes the light to bend so that the pen underneath is refracted and revealed. This shows the same effect as gravitational lensing where light is bent under the influence of gravity due to a large object such as a black hole. Gravitational lensing is a phenomenon in which light from a very distant celestial body is bent by strong gravity from a large celestial body during its travels along the curved space-time. The gravitational lensing effect has been presented as strong evidence to support Einstein's general theory of relativity. In the photo above, the black hole model represents a celestial body with a large mass, a curved surface of the water is a curved space-time, and the pen is a distant celestial body.

A glorious day in solar cells

by Jo daehyeong
Korea Electronics and Telecommunications Research Institute's Nano-New Materials Application Laboratory

The sun rises up, and we wake up. We hurry up, and the sun is at noon. We move fast and the sun goes down. We become tired and the day end. Do solar cells experience such a daily cycle? This photo shows the solar cells as if they were expressing the various emotions of the day using color. The vivid and brilliant color that the cells displayed was reflected in the title of the work. Why are solar cells are usually dark in color? This is because it needs to absorb as much light as possible to generate electricity. But is it possible to create more beautiful and colorful solar cells? This was the starting point of our study. We developed a solar cell whose color changes according to the angle of incidence of sunlight. This was done by taking advantage of the fact that different wavelengths of light are diffracted at different angles by the grating structure. By forming 300 nm wide and 770 nm long grids composed of zinc oxide on a thin-film solar cell, it was possible to produce various colors depending on the angle. At the same time, high solar power generation was possible thanks to the transparent property of zinc oxide. (Reference: Nano Energy 2021 Vol. 80 p.105550). The brilliant color of a solar cell is not the sunlight nor the pattern on the solar cell, but what is perceived through our minds. Perhaps creating such a phenomenon that can move people's minds is also a 'science'.

Korean Fan - "Boo Chae"

by Stuhl Laszlo
ibs 소속 / Center for Exotic Nuclear

In this study we measured the Gamow-Teller Giant Resonance in 11Li, the nucleus with the largest neutron-proton asymmetry factor. The figure shows the excitation energy of the reaction products of the experiment as a function of the center-of-mass system. The bar like structures are the individual neutron detectors, and their bending comes from the transformation from laboratory coordinate system to the center-of-mass coordinate system, resulting a perfect Koran Fan at IBS. This result will largely contribute to understand the neutron stars and Equation of state in connection to pion exchange.

four-leaf clover power semiconductor

by Kim Myungjun
Professor Cho Sung-hwan's laboratory at KAIST's Department of Electrical and Electronic Engineering (https://ccs.kaist.ac.kr/) PhD program (to be graduated in February 2022)

Today, semiconductors are being used in all areas of life, and therefore power management of semiconductor circuits is very important. The (system) semiconductor responsible for this power management is called a power semiconductor. In other words, power semiconductors supply and distribute current to almost all semiconductor circuits. The problem is that when many currents flow in a power semiconductor, the currents bump into each other and generate resistance. This means that the efficiency is reduced and the heat generation is increased. Because of this, the design shape of power semiconductors is an important research topic; Power semiconductors must operate extremely efficiently without generating heat. While doing this, our research team was inspired by the shape of plants. Plants need to absorb as much sunlight as possible for photosynthesis. In particular, the "four-leaf clover" stretches each leaf widely as possible in a symmetrical manner; This is to maximize contact with sunlight by maximizing the surface area. As a result, the plant can maximize the efficiency of photosynthesis. We thought that if we imitate this design inspired by nature, it would be possible to evenly distribute the current flowing in the power semiconductor so that it can operate efficiently with minimum heat generation. Our research team commissioned TSMC Foundry from Taiwan to actually produce a prototype of this "Four Leaf Clover Power Semiconductor". For this contest, we would like to submit not only the computer design drawings (left) but also micrographs of the manufactured chip (right). After successful testing, our research team could learn how nature can produce such efficient and beautiful designs.

Seoul, the glowing city

by Boitet Maylis
PhD student at Institut Pasteur Korea - campus of University of Science and Technology

Our laboratory is focused on understanding the basic biology of Pathogenic bacteria, and more specifically Mycobacterium tuberculosis, the bacterium responsible for tuberculosis (TB) in humans. Using unique technologies cell-based phenotypic screening technology platform for drug discovery, our laboratory uses bioluminescent and fluorescent proteins to track pathogens. Bioluminescence occurs through a chemical reaction that produces light energy within an organism's body. Bioluminescence can be found in many organisms: bacteria, algae, jellyfish, worms, crustaceans, sea stars, fish, and sharks to name just a few. Taking advantage of bioluminescence genes key in the process to generate light, bacteria at the Institut Pasteur Korea were engineered to glow in the dark. Using a matrix pattern on which glowing bacteria freely grow, we chose to represent Seoul with light. Controlling pathogens in a given pattern resonates with South Korea health capability to have kept COVID-19 outbreak under control.

shining wings

by Kim Jung-soo
Professor Joo Cheol-min of the Department of Mechanical Engineering at Yonsei University

This work is an image of the birefringence characteristics of vitamin C crystals which was taken using a polarizing microscope. Birefringence is a phenomenon that occurs when light is incident on an optically anisotropic medium, the light is split into two refracted lights due to the refractive index is different depending on the polarization direction of the light. The birefringence property provides a variety of information about the composition and structure of a material, such as the shapes and arrangement of molecular crystals inside the material. Since the technology for imaging the birefringence properties of materials have a wide range of applications, such as in bio, medical, and food industries as well as materials sciences, we were able to take this image while conducting related research. This birefringence image of vitamin C can make us all say “is this really vitamin C?” This shows how we can find beauty in the small parts of everyday life that we don’t know about. “The real voyage of discovery consists not in seeking new landscapes, but in having new eyes.” - Marcel Proust

Nano-transformers: driving a sustainable future

by Sampathkumar Jeevanandham
graduate student (PhD) from Department of Chemistry, POSTECH

“Imagination is more powerful than knowledge” - Albert Einstein. I envisaged the protagonist - Optimus prime from the movie “Transformers” with the Transmission Electron Microscopy (TEM) image of TiO2 nanostructures. Can you imagine a pandemic partner of coronavirus? Yes, it is nothing but the everlasting climate change due to global pollution. Enormous growth of industrialization accompanied by excessive CO2 emissions are the root cause for global warming where the demand for sustainable energy generation remains inevitable. Major energy crisis in this fast moving world desperately needs some rapid “Transformers” to drive our future in a sustainable way. Emergence of TiO2 nanostructures as a promising photocatalyst accelerates the potential of energy conversion in next-generation technologies where the global carbon emissions can be drastically reduced and transformed into value added fuels. Herein, the exfoliated ultrathin 2D nanosheets (60 x 40 nm) of TiO2 resembles the assembly of animated “Transformers” with ultimate motto to protect the mother-nature from harmful activities. The unique characteristics of these ‘nano-transformers’ possess in-built tunability on their properties, acting as a core catalytic platform and driving force for clean energy production. This illustration bridges the ideology between science and technology insisting that the power of imagination is the key to solve complex problems and develop advanced futuristic applications.

four-leaf clover in Gologanoid

by Kim Hwan
Assistant Professor of Nanochemistry Materials Engineering at the National Transportation University

Three-dimensional bone organoids are produced using chondroitin sulfate-based biomaterials and mesenchymal stem cells and vascular cells. After culturing for about 6 weeks in mice, this work shows the ossification formation center, where ossification is starting to take place. It appears that the shape of the ossification process was similar to that of a four-leaf clover. Cell nucleus was stained with DAPI, mesenchymal stem cells and human cells were immunostained with h Vimentin 9, and osteoblasts undergoing ossification were immunostained with OCN (osteocalcin).

Microcosm

by Yoon Sun-young
Faculty of Cosmetic Science at Chow Women's University

This image was obtained while studying the relationship between lymphatic vessels and hair growth. In the skin tissues of mice, the nucleus (blue), lymphatic vessels (red), and adipocytes (green) were stained and images were obtained using a fluorescence microscope. There are various cells in the skin, which is like a huge universe. Individually, cells are arranged chaotically and appear disordered, but they end up discovering a unique order and form the skin tissue. The presented image shows the magnificent order established by diverse types of cells to the extent that it can be called a microcosm. All living things, not just the mouse used in the experiment, have their own microcosms that are like cosmos of chaos.

Who changed this picture?(The color of the famous painting that we know will change?)

by Kim Donghyuk, Kang Namsoo
Kang Nam-soo, a teacher at Chungbuk Science High School / Kim Dong-hyuk, a sophomore at Chungbuk Science High School

The light around us is an electromagnetic wave, which oscillates in all directions while traveling in a straight line. However, there is a specific case in which it oscillates in only one direction, and that is called polarization. When a polarizing film is used, only the light that oscillates parallel to the polarization direction of the film can pass through. But can you believe that this light 'rotates' when it passes through starch syrup? This rotation of the polarization direction of light is called optical activity. The rotation angle of light depends on the wavelength of the light and the distance the light travels through the starch syrup. Therefore, when white light passes through the polarizing film (polarizer 1) and then passes through the starch syrup, each wavelength within the light will rotate differently according to the path length through the starch syrup. When this light is viewed through another polarizing film (polarizer 2), a particularly large amount of the light that has a polarization direction parallel to that of the film (polarizer 2) passes through, which means that only light of a specific color can be seen. When the polarizing film (polarizer 2) is rotated, the color that passes through is changed accordingly. While studying the optical activity phenomenon according to the temperature of starch syrup, we attempted to make a work of art with the intense color as shown here. In particular, we reproduced Mondrian’s art style using the optical activity phenomenon. While Mondrian’s painting stays the same color, our version can change dynamically. People think that works of art, especially masterpieces, should always be timeless. On the other hand, our work provides a new artistic paradigm that challenges this rigid view.View video on YouTube

Ancient Future

by KANG Seok
Center for Vascular Research

The sperm combines the egg to become a fertilized egg. A single fertilized egg cell then undergoes cell division and divides into a myriad of cells. The process in which these cells divide, differentiate, and move to develop into an organism is called 'morphogenesis'. The cell's DNA sequence contains a schematic of this development process. All cells start from one fertilized egg, which means they all start with an identical blueprint. Although they all have the same origin, each cell ultimately becomes a different cell with its own shape and function. Individual cells gather at a predetermined time and location to form different tissues and organs within an individual. If you look at a cell early in its development, it will be difficult to determine the fate of that cell. However, all cells undergo development as if their future had been predetermined from long ago. In that sense, it is natural to look at an egg and envision a chicken that it will become in the future. Likewise, all fertilized eggs have are potentially destined to become an individual. In other words, the “the ancient future” of a fertilized egg is the “individual”. We developmental biologists explore the processes and mechanisms behind this predetermined future.
To observe the development of blood vessels, CD31 and PDGFb proteins in 10.5 days old mouse embryos after were stained with fluorescent antibodies, and images were taken with a confocal fluorescence microscope.

A new dawn!

by Anubhab Acharya
POSTECH

“And, when you want something, all the universe conspires in helping you to achieve it”- Paulo Coelho. The flock of birds flying high in the dawn sky, chasing the dreams in the light of hope. We do not taste success all the time, but the hope of accomplishing dreams should not be rested.
The idea of “never giving up” can be visually imagined in the Transmission Electron Microscopy (TEM) image of very tiny asymmetric gold nanoparticles (average size: 90 nm). The stimulating characteristics of uniquely shaped gold nanoparticles and their interaction at molecular level with genes, viruses and proteins, etc. open the door for advanced futuristic biomedical applications. This enlightening picture signifies a new journey both for the birds and science; the incredible potential for new discoveries to be made!

Invisible sacrifice

by JEONG Jae Yong
Yonsei University

When foreign antigens (viruses, microorganisms, etc.) invade our body, our body launches a strong immune defense system to protect itself. The red cells in the photo are macrophages, which are one of the immune cells in the body. This is a picture of macrophages consuming monosodium urate crystal (MSU), which is a substance that induces gout, and displaying the antigens to lymphocytes. The image was taken using a scanning electron microscope (SEM). Although it is just a cell, watching these cells risk their lives to fight these intruders to protect our bodies makes us feel grateful.
At a time when the world is struggling to eradicate COVID-19, I hope this work will serve as an opportunity to rekindle our appreciation to the medical staff, scientists, and our own immune cells for working hard from invisible locations to protect us against the disease.

The clown's smile

by IM Hyeon Gyeong, HAN Ga Yeong
Center for Neuroscience Imaging Research

The curved structure of the hippocampus of the brain in this image appears to resemble a smile. The cell nucleus (blue), blood vessels (pink), and star glia (yellow-green) were colorized to create a gorgeous image with three colors. The overall structure and color schemes seem to look like a clown’s smile. However, in the media, clowns are often portrayed as people who laugh superficially but are actually not that happy in reality. Like a clown's smile, the hippocampus of our brain stores many memories that evoke various emotions. Although the image itself is bright and colorful, it seems to evoke a strange feeling reminiscent of the Joker.

Bloody Eyes

by KOH Ji Hun
Seoul National University

Organ-on-a-chip is a microchip that can reconstruct human cells in a three-dimensional environment in vitro. Based on an understanding of microfluidics, this microchip is capable of patterning a hydrogel containing cells in a designated area. With the ability to co-culture two or more cells, these microchips are capable of simulating a variety of organs and closely simulate their microenvironments.
The above work is a fluorescence image of a model that mimics the mechanism of angiogenesis, which plays an essential role in cancer growth and metastasis. Vascular endothelial cells patterned around a circle show angiogenesis by fibroblasts that emit vascular endothelial growth factors in the center. As the concentration gradient of the growth factor is formed in a radial shape, vascular endothelial cells have a tendency to be generated toward the center.
As implied in the title “Beautiful Bloodshot Eyes,” we depicted the phenomenon where a human eyeball became bloodshot. These models can be presented as an excellent alternative to cosmetic toxicity experiments which currently use rabbit eyes. As animal testing is becoming gradually prohibited, this model can be used in a wider field of drug testing, thanks to the reliability and the efficiency of this in vitro model compared to the existing experiments.

The presence of those we don't know about

by SUH Hui Ju
Dankook University

There are many organisms on Earth that we do not know about. In fact, there are many small and insignificant organisms that constantly live next to us. What are they? They are fungi. Fungi act as decomposers that break down the material within the dead organism. Even though these are creatures that faithfully carry out their duties from nature’s point of view, people look upon them with disgust and believe they are dirty and causes of infectious diseases.
But not all fungi are seen in such negative light. Some are highly valued as a producer of valuable pharmaceuticals, such as penicillin, while mushrooms are seen as delicacies or healthy functional foods in many cultures. In addition, fungi have been spotlighted in the agriculture industry in recent years due to their soil-enriching properties. In many ways, whether we know it or not, our lives and fungi are intertwined with each other.

Sorrowful Rainbow Fish

by JEONG Ju Hyeon
POSTECH

This image is the surface of a germanium substrate that was deformed due to contamination caused by a tweezer. This occurred while cleaning the substrate in order to grow graphene on the germanium substrate, and the substrate had to be discarded due to this incident. This is an image I got while analyzing the surface with an optical microscope in order to figure out what happened so that I do not repeat this mistake.
The name of the work, Sorrowful Rainbow Fish, is intended to reflect the state of my mind at the time of this incident. Failing an experiment or experiencing a setback inevitably leads to stress and pressure on most graduate students. The work was named as such since I was sad about not even being able to conduct the experiment that I had planned.

Flowers covered with grass

by HONG Seon Pyo
Center for Vascular Research

Inside the villi of the small intestine, there are special lymphatic vessels called chyle ducts, which are composed of endothelial cells in the form of elongated tubular shapes. Chyle ducts play an important role in absorbing fat-soluble nutrients such as fatty acids and vitamins that enter the intestine. Our research team has investigated and researched the shape and function of these chyle ducts. In order to to do so, a deeper detailed observation through various experimental techniques was required. The further observation allowed us to learn about the structure and function of the chyle ducts as well as their importance. The above picture was taken in the process of studying the interaction between the chyle ducts (purple) and the surrounding smooth muscle cells (green).
The process of discovering and researching the chyle ducts reminds me of a poem called “The Flower of Grass” by poet Na Tae-ju. 'It's pretty if you look closely, it's lovely if you look at it for a long time, so are you.'
The photograph also closely resembles an image of flowers that are hidden behind the grass.

My Memory of Us

by NA Yu Ri
Korea Institute of Science and Technology(KIST)

We all age.
When I was little, I wanted to quickly become an adult. But now as an adult, I am sitting here counting my age every year. My grandmother and grandfather are no longer with me as an adult. My aging parents are now in that vacant place. When I was young, my grandmother, who was my best friend, suddenly became a different person. I even felt shocked and betrayed by my grandmother, when she didn't remember me.
I wanted to know what happened to my grandmother, why she had suddenly changed, and why she had to become a different person. So, as a child, I decided to become a neuroscientist to study dementia.
This image was obtained while conducting a study on the brain through auto-detection for Cerebral Small Vessel Disease (CSVD) using the computational imaging informatics method. Our memories of us are eternal, beautiful, and precious. In order to keep these precious memories, I want to unlock the mysteries of the brain, one step at a time.

Time travel in the Universe

by LEE Jae Hyun, PARK Chang Beom, KIM Joo Han, SHIN Ji Hye, KIM Yong Hwi
Korea Institute for Advanced Study(KIAS)

Horizon Run 5 is a large-scale project that performs cosmological fluid dynamics simulations in a huge virtual universe with a side length of about 3.1 billion light-years. Using a third of the supercomputer's computational resources exclusively for more than 3 months, the formation of cosmic giant structures and the formation and evolution of galaxies were calculated with a resolution of up to 3140 light-years.
The submitted video dates back to about 1 million to 7.8 billion years ago after the creation of the universe, and it shows the cosmic giant structure and the changes to the galaxies over time. As we go back to the younger and more distant universes, we see bluer, smaller, more irregular galaxies, and the cosmic giant structures that contain galaxies become progressively weaker and sparser. This is an inspirational video of what our universe would have looked like when it was younger. Starting from an image of a galaxy's stars, gases, temperatures, and metals visualized in different colors, it shows how the universe changes in terms of the composition of its stars, gas density, temperature, metal content, and dark matter.

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Jewelry Fish

by MIN Jae Myeong, YANG Soo Yeon
Bloomwork,Inc.

Can artificial intelligence serve as an art tool to become the new normal of creation?
The long-held belief that art is a human-specific domain is collapsing. Human role in the future may no longer be about creating a work, but involve making decisions on how to train artificial intelligence.
When the artificial intelligence was tested on the public work <Fish>, the AI did not only reproduce the surface texture in detail but also recreated the work using a new artistic style.
This means that artificial intelligence is capable of both imitation and creation. This spawns a debate on whether artificial intelligence should be relegated to mostly assistance role, or be recognized as a new creator. One thing is certain that artificial intelligence may become the new normal for creativity. Do you agree?

Star, Flower, River of memory

by LEE Gyu Hui
Center for Cognition and Sociality

The hippocampus is known as the part of the brain responsible for memory. In order to form and maintain memory in the brain, the roles of not only neurons but also glial cells are important. However, there are still many things to be studied about the interaction between neurons and glial cells. This experiment determined how the neurons and the star-shaped glial cells called astrocytes differ in their activation and how interact with each other when mice performing certain behaviors in experiments. We expressed the green calcium indicator protein in the neurons and red calcium indicator protein in the astrocytes. The cell nucleus was stained using blue color, and the image was taken using a confocal microscope.
This image is reminiscent of a work of an impressionist painter, which uses vivid natural colors to illustrate green grass and red poppy flowers under the starry night sky, against a river in the background flowing around the flower garden.

Red alert: COVID-19

by AHN Ji Hun
Center for Vascular Research

At the time COVID-19 showed signs of becoming a potential pandemic, humanity may have been underestimating the virus. The Sars-CoV-2 virus enters the respiratory tract upon inhalation, multiplies within our cells, and gets expelled within our breaths to rapidly infect the people around us. This work is a fluorescence microscope photograph that was taken after the cells were collected from the nose of an asymptomatic COVID-19 patient and were stained with a virus-specific protein antibody.
In this image, viruses (red) are actively proliferating within an infected nasal epithelial cell, which is in the middle of many uninfected nasal epithelial cells (green). These cells appear to be the personification of ourselves who lived in blissful ignorance in the early days of the pandemic without realizing the seriousness of the situation. If you imagine that each of the cells in the picture is an individual, there seems to be a good argument about the importance of social distancing and early diagnosis.

Pearly shells

by KANG Nam Yeong
Center for Self-assembly and Complexity

It is said that natural pearls usually require 2 to 4 years to be created. The probability of obtaining a natural pearl in the wild is very slim at approximately one out of 10,000 shells. Even among this, the probability that the pearl will have a large enough size and spherical shape for it to have a commodity value is even lower. Just as rare as these pearls are the brown fat cells in our body. While they are more plentiful in newborn infants, they gradually disappear as the individual grows into an adult, leaving behind only unhealthy white fat cells in the body. This study involved the induction of brown adipocytes from white fat for therapeutic purposes. The appearance of brown adipocytes in this image was reminiscent of the appearance of a shell containing pearls, and hence this is why the work was named Pearly Shells. It is said that the probability of successfully differentiating brown adipose tissue obtained from baby mice (Usually 10 to 14 days of differentiation time and complex culture conditions are required. Normally, the cells fail to undergo differentiation and are discarded) is said to be based on random chance. Therefore, it can be said that the brown fat cells obtained from this study are comparable to natural pearls. A cyan color was applied to the obtained image to give them a color similar to that of the natural pearl.

An Inner Struggle In The Body

by SEO Hyun Ji
Kyungil University

We consume numerous tablets throughout our lives. These range from prescription medication that you take when you are sick to various supplements, vitamins, etc. that you take daily. One day, I was curious about what happens to a pill when it enters the body.
Because the pill is in a form of compacted powder, it melts when it comes into contact with a liquid such as water. Therefore, I dissolved the pill with hot water and filmed the process using a macro lens. During this operation, I could see that individual pill's shapes changed in various ways while melting. Some pills melted like a firecracker while some became spread like a wave, while the others had an appearance of melting little by little while maintaining the original shape. The appearances of these pills melting seemed like they were fighting viruses inside the body, which led to the name of the work "Inner Struggle in the Body."
*Macro Lens: High-resolution lens made for close-up photography

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Steering wheel

by HONG Sung-guk
Bainary,Inc.

The steering wheel is an important part of a car that is required to change the direction of the vehicle. So how do all animals, including humans, decide their direction? The brain contains about 100 billion neurons and 900 billion glial cells, and together with the spinal cord, they form the central nervous system. It evaluates environmental stimuli, responds appropriately to maintain the body's homeostasis, allows for movement, and controls muscles.
This work is an image of a 2mm-thick section of a mouse brain that was genetically modified with Thy1-YFP. The slice was made transparent using the CLARITY technique and photographed with a light sheet microscope. Fluorescence is expressed in most neurons and appears brightly throughout the cell until the end of the axon. As shown in the video, the overall outline of the brain slice appear similar to the steering wheel of a racing car, as is their role in determining the direction of their host.

*Light sheet microscope: single plane illumination microscope that can acquire fluorescence-stained images at ultra-high speed to determine the function of the target protein in living cells, tissues, or model organisms. The 3D structure of the sample was identified through 3D reconstruction. It is a device that can observe large-scale (mm) samples that could not be observed using existing equipment.
**CLARITY technique is a state-of-the-art technology that renders the tissues and cells of an opaque biological sample transparent so that the expression and position of the protein marker can be observed in 3D.

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Grassland of Erlkönig

by LEE Seung Jun
Center for Synaptic Brain Dysfunctions

A sinister red flash of light sinks over the grasslands amidst stormy weather. This photo is reminiscent of Schubert's " Erlkönig ", which is a piece of music inspired by Goethe's poem with the same name. This picture of the cerebellum of a mouse looks like the red touch of Erlking reaching down into the blue night air that fills up the dynamically entangled grassland.
The cerebellum is involved in muscle movement and maintenance of balance, it has a fairly unique structure that matches with the dynamic description of this work. It has several clearly distinct layers, and the types of cells that make up each layer are also different. The large green circles lining the upper middle part of the picture are Purkinje cells in the cerebellum. Parvalbumin protein, which is present in Purkinje cells, was stained (Immunohistochemistry, green) before imaging. This staining method is a time-consuming process and is difficult to perform in living cells. In order to rapidly identify the cells expressing Parvalbumin without killing the organism, mice were genetically modified so that cells expressing Parvalbumin co-express red fluorescent protein (tdTomato, red).
However, the two signals do not appear to overlap completely (yellow color would result if they overlap), which is an interesting example of how artificially inserted genes may not actually function as intended. This unpredictable uncertainty is one of the most fascinating parts of living processes.

What a beautiful Diffraction pattern!

by KWON Min-chan, JUNG Chan-wook, EOM Seungjae, KIM Moon-gyeom, CHO Hye-ri
Gyeongnam science high school

The picture above is obtained from the simulation of the Fraunhofer diffraction pattern of multiple concentric square holes. While numerous studies have been conducted on the diffraction of various types of slits, the high school curriculum only teaches single slit or double-slit diffraction. To overcome this, we simulated the diffraction pattern created by multiple concentric square-shaped slits by entering the irradiance function under the given conditions using a computer program called 'Mathematica'
Slits of various shapes can be produced. The picture on the bottom right is the pattern that can be produced using two concentric 0.2 mm square holes with a gap of 0.2mm between the holes. “What a beautiful Diffraction pattern!” was selected as the title of this work, because various beautiful patterns could be created using only concentric squares.

Turbulent cosmos

by CHOI Jung-il, KIM Ki-ha
Yonsei University

Natural convection is a flow that arises due to the difference in density caused by temperature and the buoyancy caused by gravity. Rayleigh-Bénard convection is a standard type of natural convection occurring in a fluid that is heated at the lower layer and cooled at the upper layer. Rayleigh number (Ra) is used as an index to indicate the temperature difference between the two planes, with the larger number denoting a higher temperature difference between the two planes. The greater the temperature difference in turn results in stronger buoyancy and more intense convection flow. When the Ra number is very high, turbulent flow can occur. Turbulent flow is characterized by irregular fluctuation. One of the reasons why it is difficult to predict turbulent convection mathematically is because small and large movements of fluid affect each other. Therefore, to understand the turbulent flow accurately, it is necessary to calculate even the smallest movements within the flow in detail.
This video is the result of Rayleigh-Bénard convection implemented through computer simulation. Large-scale calculations using a supercomputer were required to capture all the minute movements within the turbulence. In the image, the red color represents higher temperature, while the blue denotes lower temperature. Intricate small flow structures are visible among the large flow structures within the convection. The large flow structure generates convective flow and is responsible for a large portion of heat transfer. A cell structure is formed downwards flow of the cooler fluid meets the warmer layer below. The heat flow is generated when the warmer fluid becomes displaced by the cold flow and rises up due to buoyant forces.
The video was named 'Turbulent Cosmos' because the convection cells formed by the flow looks like a cosmos flower. It is interesting to see that some form of order can arise in the forms of these small complex flow structures in the midst of the chaotic disorder of turbulent flow.

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Painting with a Sound Brush

by Ilha Hwang
Center for Self-assembly and Complexity

Chemical reactions, in general, can be controlled by concentration, temperature, pH or external stimulus such as light. Is there any other way to control chemical reactions? While pondering this question, we got new inspiration from the sound of the music we heard over our speakers. We then tried to control complex chemical reactions using sound and during our attempts, we obtained interesting results and spectacular patterns. These photographs were taken during the experimental process of selectively controlling the oxidation reaction of a vividly blue organic dye molecule with sound. Now we paint using a sound frequency generator, a speaker, and different-shaped chambers. We believe that someday we can paint more complex yet aesthetic patterns with music or natural sound as a paint brush.

Bonfire in the Brain

by Jihoon Ahn
Center for Vascular Research

The brain is a tightly regulated and protected organ. Scientists have long been interested in the brain, but not much is known about the meninges—the protective membranes that cover it. The Center for Vascular Research looked closely at these thin layers of tissue covering the brain using a genetically engineered lymphatic reporter mouse model under a fluorescence microscope and has recently discovered a waste disposal system of the brain—meningeal lymphatic vessels and perivascular macrophages. The meningeal lymphatic vessels, shown in green, constantly sprouts and regresses, while perivascular macrophages, shown in orange red, keeps moving and surveilling the surface of the brain to prevent pathogens from entering the brain. These dynamic biological processes resemble a glowing bonfire with large flames and flying sparks.

Lung of Dionysus

by Seok Kang
Center for Vascular Research

Dionysus, also known as Bacchus in Roman mythology, is the ancient Greek god of wine, fertility, productivity, and grape-harvest. Grapes symbolize life and abundance due to the plant’s strong vitality and many clusters of grapes on a single vine. An interesting resemblance to grapes can be seen in the most important organ for respiration; lungs, which allow one of the most fundamental processes of life maintenance. Within the lungs are pulmonary alveoli which are small hallow air sacs where O2 and CO2 exchange occurs. An alveolus is located at the distal end of the airway and a cluster of alveolus, called alveoli, has an undeniable resemblance to a bunch of grapes. The image was captured using confocal microscopy after staining the vessel of a developing embryonic lung on embryonic day 12.5. The image was deformed by exaggerating the individual alveoli to more look like grapes. By coloring the image with eye catching neon colors, this image expresses the fest of Dionysus.

A Ray of Clarity

by Dongwoo Han
Center for Vascular Research

Lungs are essential respiratory organs for all living beings. They have a complex network of alveoli, vessels, and lymphatics. This work shows a photograph of a cleared mouse lung sample captured using an optical microscope. In order to observe the tissue completely intact—not sliced in any way, we used a technique called CLARITY that renders tissues transparent. We also stained CD31, a protein abundant in endothelial cells, to capture a complex network of blood vessels in lungs. However, because of the thickness of whole mounted lung tissue, the microscope brings only a certain spot into focus, much like a single ray of light. This ray of clarity resembles science as science is a process of investigation to find clear answers from amongst obscurity.

Differentiation of Affection

by Sejin Park
Center for RNA Research

New books are published every day, constantly changing the new release section in bookstores. A majority of them are books on human emotions, especially popular are publications on love and relationships for readers desperately seeking some helpful advice. Nonetheless, we will never fully know how affection works between people, how these feelings start, why they change, and where they will end up when everything is said and done. A heart shape cell block in the photograph was captured by chance in the course of a gene expression experiment for neural stem cell differentiation. The experiment itself was actually a failure as the result was not as expected but it left this interesting heart shape image of a cell block with what looks like twigs extending in all directions. It looks similar to the affection we have for someone—that feeling of emotion that keeps changing and spreading out naturally like water flowing. The cell-cell interactions observed through a microscope and the change of human emotions have something in common—both are unpredictable.

Glimpse of the Universe within a Plate

by Junyeop Roh
Center for Synaptic Brain Dysfunctions

When one looks up into the night sky, the glimpse into the vastness of the universe is often limited to the confines of the circular view allowed by the telescope’s lens. Remarkably, fluorescence-labeled cells grown in a circular plate resembled such view, with the cells serving as the stars. How the smallest units of life—cells—can look so much like the largest observable phenomena in the sky seems paradoxical. Green fluorescent protein-tagged membrane proteins overly expressing Chinese hamster ovary (CHO) cells were grown on plates and their images were captured by confocal microscope.

Starry Night

by Junyeop Roh
Center for Synaptic Brain Dysfunctions

Vincent van Gogh once stated, “I don’t know anything with certainty, but seeing the stars makes me dream.” One of the more iconic masterpieces of van Gogh is his The Starry Night, complete with swirling swaths of stars circling various elements of the night sky. When these DAPI, a blue-fluorescent DNS stain, and green fluorescent protein -labeled Chinese hamster ovary (CHO) cells were imaged by confocal microscopy, the resulting image showed groups of “stars” forming whirlpools against the contrastingly dark background—much like the stars of the night sky.

It‘s Okay.

by Joonhyuk Lee
Center for Cognition and Sociality

Occasionally we fail at something, but we learn from our failures and move forward. But sometimes, no matter how hard we try, we don't even see the signs of success, but instead fixate on the deeply rooted memories of past failures that continue to haunt us. The blue colors in the image are neurons called thalamic reticular nucleus. Some of these neurons, shown in red, stretch the thread-shaped axon, which serves to suppress fearful memory. When you are in a scary situation, these neurons increase their firing activity, allowing you to overcome the fearful situation. Whenever your past failure or fearful memories discourage and stop you from taking up new challenges, pay close attention to the message of support that is sent to you from the deep inside of your brain—it’s okay.

Zebrafish

by Jinhee Hong, Yonghyeon Jo, Jaecheol Jo
Center for Molecular Spectroscopy and Dynamics

They say eyes are the window of the mind. We can understand a person’s emotions and thoughts by looking into each other’s eyes. This video clip is composed of confocal reflectance images of the eyes of zebrafish, which is a widely used animal model at our Center. The pattern of light reflected from the zebrafish’s cornea, lens, and vitreous chamber looks like stars and a nebula in the Universe. Their eyes are less than 1 cm in size yet contain an immense, light year-scale of the Universe. Maybe the zebrafish are using their eyes to tell us they are also precious creatures, just like humans, and are part of the Earth and the Universe.

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Green Galaxy

by Hyojin Kim
Center for Biomolecular and Cellular Structure

In modern times, the lights of cities fill the night sky, even at a late hour. Lights from office windows, street lamps along roads, and flashing neon signs exhaust and overwhelm our eyes. However, if you get a little off the beaten track, you can meet the real owners of the night sky. You can’t see well with eyes that are accustomed to bright city lights. But if you keep your eyes focused on the sky for a while, you will see a beautiful starry night. This photograph is of a virus-infected insect cell containing green fluorescent DNA. After a long period of time, the virus multiplies and more cells emit fluorescence, which resembles a green galaxy in the night sky. This is an essential step to make proteins, but researchers have nothing to do but wait during the process. The work can be arduous and the hours long, but if you endure you can make good proteins. These newly made proteins seem to say that if you close your eyes and take a deep breath, even for a moment in the midst of your busy and laborious time, one day it will be your time to shine like a glittering star.

Self-organized Octahedra

by Yaroslav Sobolev
Center for Soft and Living Matter

When jammed together, identical objects with symmetric shapes may self-assemble into formations that preserve order over large distances. The look of these packings is a fingerprint of the geometric shape of the underlying object, and simple objects can form intricate packings. Understanding the rules governing the outcomes of such self-assembly is important for designing structures that spontaneously self-build from basic blocks. In this photo, you can see how octahedral (eight-sided polyhedron with equal equilateral triangles as faces) that I have randomly thrown into a glass dish for storage, have—after a few accidental shakes—formed an ordered packing. This pattern of triangles is a known packing for octahedra on a flat surface, so it’s not anything new or unexpected, but I was still surprised how quickly this pattern formed with no guidance on my part whatsoever.

Granular Flame

by Yaroslav Sobolev
Center for Soft and Living Matter

It’s hard to believe, but there are no liquids involved in what you see here. These are plastic balls only among air, with green balls smaller than red ones. Balls are inside a glass flask that is being vertically shaken, and one video frame is taken every few shakes. When balls rub against each other, they become electrically charged, repel each other and climb up the transparent glass wall. As a result, their motion starts to resemble convection or a flame. This is an interesting example of the intricate collective behaviors than are possible in simple granular systems, including here in a mix of two sizes of balls in a glass container.

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Convective Mixing

by Yaroslav Sobolev
Center for Soft and Living Matter

Mixing of liquids, essential for many chemical reactions, is notoriously hard to do in tiny flasks when you only have a little bit of each liquid for your reaction. Mixing even plain water with dye in a sub-millimeter container is as difficult as mixing different kinds of thick honey in a one-liter bottle. Here we show that heating by a laser can facilitate mixing of two droplets of water (one of them dyed orange, another containing acid) connected into a single dumbbell-shaped droplet that is made possible by a special “nano-soap” we developed. Nanoparticles of this “soap”, coating the droplet in a greenish ultrathin layer, strongly absorb light from a laser (pointed at a spot in the lower left corner), heating the water inside and making it swirl like in a teapot. As the contents inside mix, acid from the right part makes the orange dye from the left part become violet and less vivid.

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Footprints on Scintillating Crystal Surface

by Jungho So
Center for Underground Physics

A scintillating crystal can be used for a radiation detector by measuring its emission light as proportional to the energy of incident particles and radiation. The Center for Underground Physics has been developing a simultaneous measurement of heat and light from scintillating crystals at a temperature of 10 mK for an effective particle identification. The detector, once developed, will allow precise observation of neutrinoless double beta decay, bringing us one step closer to unraveling the mysteries of the universe. Making a clean, smooth, polished surface of the crystal is the first step towards the goal. As the image shows a surface that is not clean and smooth, this attempt was a failure. The image shows the surface of the crystal captured by a high resolution microscope. The patchy surface of the crystal was a total failure as we needed it to be smooth, but the result stirred up some artistic imagination. One might think that they are looking at the first human footprints on the Moon or Mars, or some fossils in a desert. As we are almost to the end to the experiment, we will soon be reminiscing when later looking at this picture as the footprints of our journey to unravel the mysteries of everything.

Patient Zero

by Philip Willke
Center for Quantum Nanoscience

The patient is long gone. It demised shortly after the experiment. What you see are four MRI scans, the last images ever taken of it. Was it sick? No. We just took these scans out of curiosity. Cruel? Not at all. No humans or animals were harmed in the making of these images. You are witnessing here the smallest MRI ever taken, displaying a single titanium atom. The image size is almost beyond human imagination, merely a billionth of a meter. The wave-like feature, gently sloshing from one side to the other, reflects the inside of the atom. It reveals the atoms’ magnetic field at different strengths. Thus, patient zero has not died in vain, but shared his most intimate secrets, guiding us to better understand the fundamental building blocks of nature.

Starry Quantum

by Shinjae Nam
Center for Quantum Nanoscience

Scott Lang, the title character of the movie Ant-Man, turns off the regulator on his suit to save his daughter. He then became smaller than the size of an atom and entered the extreme microscopic world—the quantum realm. Unlike Ant-Man, we cannot see atoms directly. However, by using a scanning tunneling microscope (STM), an atomic image can be obtained. In a microscopic world, things cannot be easily explained by the same laws of the world we live in. A flat-looking smooth gold surface can actually turn out to be not so flat if viewed by an STM. This picture is an STM image of a gold (111) surface which vanadyl phthalocyanine (VOPc) molecules are deposited. At the surface, the gold atoms change their arrangements and this results in a height difference. The Z-like patterns (herringbone patterns) are made by the height difference of rearranged gold atoms. The round shape particles are the deposited (vacuum evaporation) VOPc molecules. Most of them are located on the elbow of the herringbone pattern. These patterns show that there are rules in the atomic world as well. The microscopic world still has a lot to study, presenting scientists with many opportunities to push the limits of science and technology.

Atomic-scale Stained Glass

by Gyeongcheol Gye
Center for Artificial Low Dimensional Electronic Systems

A charge density wave (CDW) is a phenomenon which atoms and electrons undergo a phase transition at low temperatures with new periodic structures different from those at high temperatures. This image shows two different CDW structures on the surface of niobium diselenide (NbSe₂) taken by a scanning tunneling microscope (STM). The two charge density wave structures are distinguished into colored and uncolored areas with different colors indicating a difference in their location. The colorful areas of a charge density wave bring to mind stained glass in cathedrals.

The Nanoscale Vegetable Garden
(Subtitle : A Strange Co-existence of Radishes and Cabbages

by Eunseok Oh
Center for Artificial Low Dimensional Electronic Systems

Periodic green peaks appearing on the curved red ground remind us of fresh growing vegetables at regular intervals in a field. Among the vegetables, when you look closely, it is easy to figure out that the shapes between the left and right areas are different. In the upper left area, single green peaks appear periodically, as if the radishes are with their leaves growing up. On the other hand, triple green peaks appear in the lower right area, as if the cabbages are with their leaves spreading out. These two kinds of vegetables coexist in the field and their area is divided by an interfacial line in the middle. This image was taken by a scanning tunneling microscope at cryogenic temperatures of -269 degrees Celsius (4 K), which shows the surface atomic structure of NbSe₂ crystals in a charge density wave state. Peaks of various heights on the surface indicate Se atoms, and the green peaks with a specific period are due to the deformation of the atomic structure by a charge density wave. The coexistence of the two types of structures (the left radish area and the right cabbage area) of the charge density wave, which are energetically competing, provides an explanation for the cause of incommensuration of charge density wave of NbSe₂ which has been unresolved for decades.

CMS - The Art of Science I

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS - The Art of Science II

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS - The Art of Science III

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS - The Art of Science IV

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS - The Art of Science V

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS - The Art of Science VI

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS - The Art of Science VII

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS - The Art of Science IIX

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS - The Art of Science IX

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS – The Art of Science X

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS - The Art of Science XI

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS – The Art of Science XII

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS – The Art of Science XIII

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

CMS – The Art of Science XIV

2013, Michael Hoch, Photo print on Alu Dibond behind Acrylic glass,, 80x80cm

The God Particle Hunting Machine Daisy_YE1

Michael Hoch(2013) photo art print, Photo Paper print on Al Dipond, 200x66cm

The God Particle Hunting Machine Poppy_YE1

Michael Hoch(2013) photo art print, Photo Paper print on Al Dipond, 150x50cm

The God Particle Hunting Machine

Michael Hoch(2013) photo art print, Photo Paper print on Al Dipond, 150x50cm

The God Particle Hunting Machine Apple_YB2

Michael Hoch(2013) photo art print, Photo Paper print on Al Dipond, 150x50cm

Faces of CMS

2010-2016, Michael Hoch, Photo Paper print on textile, 900x400cm

Korean CMS

2019, Michael Hoch, Photo art print, 60x45cm

Matter – Anti-Matter Symmetry 1

2012, Michael Hoch, photo art print, Photo Paper print on Alu Dibond, 100x100cm

Matter – Anti-Matter Symmetry 2

2012, Michael Hoch, photo art print, Photo Paper print on Alu Dibond, 100x100cm

Matter – Anti-Matter Symmetry 3

2012, Michael Hoch, photo art print, Photo Paper print on Alu Dibond, 100x100cm

Matter – Anti-Matter Symmetry 4

2012, Michael Hoch, photo art print, Photo Paper print on Alu Dibond, 100x100cm

CMS graphic

Michael Hoch, Kathy Kissik(2016) Photo Paper print on silk screen, 80x80cm

CMS colour Red

Michael Hoch, Kathy Kissik(2016) Photo Paper print on silk screen, 80x80cm

CMS colour Blue

Michael Hoch, Kathy Kissik(2016) Photo Paper print on silk screen, 80x80cm

CMS metalic Physics

Michael Hoch, Kathy Kissik(2016) Photo Paper print on silk screen, 80x80cm

CMS in Action

2014,Paul Schuster & Michael Hoch, Video

CERN in 2 minutes

2018, CERN, Video

Flight over CMS

2015, CERN, Video

Giant dance of CMS

2016, CERN, Video

The Sounds of CMS

2017, CERN, Video

A Piece of Femto-Galaxy

by Min-Cheol Lee
Center for Correlated Electron Systems

A single crystalline Ca₂RuO₄, destroyed by an ultrafast laser beam, is modeled as a workpiece. The broken crystal shows a clear line along the path of the femtosecond laser pulse incident on the sample. Unlike conventional techniques, ultrafast spectroscopy can instantaneously introduce a large amount of energy by using femtosecond light. Particularly in the case of Ca₂RuO₄ with a strong correlation between electronic/lattice structures, huge structural changes can arise, such that the sample is destroyed not by physical contact but merely by the absorption of ultrafast light. The millimeter-sized black sample with red glue reminds me of a vast galaxy in the night sky.

Diamonds and Wine

by Dr. Matthew Coak
Center for Correlated Electron Systems

Two-dimensional magnet MnPS₃ is naturally a beautiful translucent lime green colour. As this photo, taken on the Diamond Light Source x-ray synchrotron in the UK, shows, squeezing this material between two diamonds changes it to a gorgeous deep red. With the light shining through it from behind, it looks like a droplet of the finest claret (Bordeaux). Surrounding the crystal in the centre, you can see the perfect facets of one of the two flawless natural diamonds. The crystal experienced 100,000 times atmospheric pressure - 100 times the pressure at the bottom of the Mariana Trench and enough to turn oxygen solid! The drop in energy changed the green to a red colour as MnPS3 was driven from an insulator to a metal, which was found to occur at 300,000 atmospheres.

Oil Painting Inside Donut

by Ki Hoon Lee
Center for Correlated Electron Systems

This figure demonstrates Berry curvature of the spin wave of a triangular lattice in nearly a 120 degree alignment. The spin wave forms a band with a dispersion in the crystal momentum space as the elementary excitation of magnetic materials. Berry’s curvature is considered an important quantity in modern condensed matter physics because it contains geometric and further topological properties of the various excitation states that form bands, including spin waves. In this figure, we placed a crystal momentum space on the surface of a torus or donut shape and tried to give a unique perspective by showing the Berry curvature from the inside. The color represents the size of curvature, and the point where the three black lines meet is the K point, which is the edge of the crystal momentum space.

Milkyway in CBST

by Jae-Joon Kim
Center for Correlated Electron Systems

Crx(Bi_0.1Sb_0.9)₂Te₃ (CBST) is the topological insulator that chromium is doped on (Bi_0.1Sb_0.9)₂Te₃. Due to local magnetic chromium dopants, a sample will change to global ferromagnetism. This topographic image was taken to find the magnetic domain boundary on a CBST sample with a scanning tunneling microscope (STM)^*. It is only 384 nm x 216 nm in size but resembles the Milky Way.

Is the catalyst alive?

by Jeongjin Kim
Center for Nanomaterials and Chemical Reactions

The molecules that cause chemical reactions breathe new life on the atomic surface of catalyst materials. Much like how minuscule movement can trigger a huge typhoon at sea, an atomic-size wave packet, which is smallest measurement unit of material, can instigate tremendous effects where molecules meet atoms on a catalyst surface. Repeated collisions at the molecular level on a platinum-nickel catalyst surface with atomically-layered adsorptions of carbon monoxide and oxygen molecules result in the reconstruction of atomic layers and a new catalytic reaction.

Mankind in the Nanoworld

by Hyosun Lee
Center for Nanomaterials and Chemical Reactions

The video shows the sequence of in situ transmission electron microscopy (TEM) images of platinum-cobalt (Pt₃Co) bimetallic nanoparticles, where a cobalt oxide (CoO) layer is formed on the surface of the nanoparticles. The atoms in the nanoparticles, arranged in a regular array, seem to keep their position, but the atoms change slowly as the environment changes. Here, Pt₃Co bimetallic nanoparticles are not observed in a high-vacuum environment, but in an oxygen gas (O₂) environment measured in real time while applying heat. In this research, we have found that the cobalt atoms move to the surface of the nanoparticles atom by atom and form a single CoO layer on the top surface during the catalytic reaction, resulting in the improvement of the catalytic activity. While researching these small nanoparticles, we are reminded that mankind gradually tries to find a way to adapt to surrounding changes and moves toward a better direction.

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The Night I Count the Stars

by Dongwook Kim
Center for Catalytic Hydrocarbon Functionalizations

This diffraction pattern image came from a single crystal x-ray diffraction experiment. The harmony of aesthetic symmetry is an example of the beauty in nature. The diffraction with x-ray radiation to single crystal results in a well-arranged and symmetric pattern. The spreading spots are generated in a harmonious crystallographic condition. We get a sense of beauty looking at the symmetrical arrangement of dispersed diffraction spots give us a sense of beauty resembling stars in the universe.

Molecular Golf: Birdie or Bogey?

by Jiyong Park
Center for Catalytic Hydrocarbon Functionalizations

Potential energy surface (PES) illustrates the energetics of a molecular system, on which the route and the outcome of a chemical reaction can be described. When color-coded, the surface resembles a golf-course with multiple hills. The lowest saddle point between the hills is the transition state (TS), which defines the minimum energy to access the product. Chemists can figuratively play golf to find the best route to reach the hole (product) from the teeing ground (starting material). Occasionally, the path passing the TS forks to lead two products, known as post-transition state bifurcation. When successful, much like a birdie, we obtain cyclopropane as a product; otherwise, we acquire cyclobutane, which is like getting a bogey.

CSLM in the Microworld

by Kibom Nam
Center for Soft and Living Matter

Optical tweezers are scientific instruments that can trap micro-size objects with a highly focused laser. Holographic optical tweezers can generate multiple optical traps with a single laser source. It can generate any arbitrary position of optical traps. This work shows optically trapped 2-micrometer polystyrene particles in deionized water spelling out "ibs. CSLM" an acronym for the Center for Soft and Living Matter.

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The Phases of DNA

by Anisha Shakya
Center for Soft and Living Matter

Due to its polyelectrolyte nature, DNA can form different phases upon interaction with multivalent cationic polymers. Despite their importance, the prediction and control over these phases remain elusive. This collage shows images of DNA condensed into liquid, multicompartment liquid-like, liquid-crystalline, and semi-solid phases. The variety of visually striking features seen under the microscope takes a scientist’s imagination on delightful artistic detours.

A Tree in the Forest

by Kyu-Hee Lee
Center for Cognition and Sociality

Many neurons come together to form the brain, just like how trees constitute a forest. By seeing only one tree you cannot know what a forest looks like, and even if you can observe the forest from the sky, you cannot know the types nor the individual roles of each tree. Investigating brain function is similar. This image is a cross-section of hippocampus from a mouse. Among the many neurons in a living mouse, one single CA1 pyramidal neuron was detected. I investigated its activity resulting from interactions with other neurons by using patch-clamp techniques. This technique is used to measure the potential of cell membrane via glass micropipette. To find the patched single neuron and to check its shape, I stained the brain slice with fluorescent dye. Finally, I found the single neuron that was standing alone but shining with green fluorescence. You can find the one ‘neuronal tree’ in the middle of the forest composed of many neurons.

The Sound of Snow

by Axel Timmermann, Jung-Eun Chu, Karl Stein, Kyung-ja Ha
Center for Climate Physics

Snow is a crystalline form of water. It insolates soils and plants from harsh winter conditions, it enhances earth’s reflectivity, and it can accumulate in cold areas to form ice sheets, such as Greenland and Antarctica. In our warming world, the number of snow days will decrease considerably and climate computer model simulations show that towards the end of this century snowfall events in the midlatitudes, such as the one in Busan on January 10th, 2018, will become rare. When we think about snow, we often think about our childhood—the experience of building a snowman, the thrill of a snowball fight, or just the beauty of watching snowflakes. This video clip, which is accompanied by a piano improvisation, tries to remind us of the beauty of snow as well as its fate in response to fossil fuel emissions.

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The Eyes of Morpheus

by Haram Park
Center for Synaptic Brain Dysfunctions

The Greeks of antiquity believed Morpheus was the god of dreams and would appear during sleep to shape and form our dreams. We spend one third of our lives asleep, and yet sleep is still a field relatively unknown to science. Why we sleep and how we dream are questions that are yet to be answered. What is known is that the lateral preoptic area (LPO), the region of the brain depicted in the image with red coloring, is critical for sleep to normally progress in the brain. Impairments of neurons in this area causes many disruptions in sleep, such as insomnia. Understanding the LPO will be the gateway to understanding the realm of Morpheus. (Green: NeuN, neuronal marker, Red: GAD, inhibitory neuron marker, Blue: DAPI, Nucleus).

Layers Upon Layers

by Yeonsoo Choi
Center for Synaptic Brain Dysfunctions

A single neuron can receive thousands of signal inputs from other neurons and process them for downstream signalling. This image shows the layers of the hippocampus, the memory storage area of the brain. The colorful layers in the image do not depict different neurons but the different inputs a single neuron in the hippocampus can receive. Even now, as you read this, your brain is processing the layers upon layers of information from countless different regions and subregions to derive cognition from noise. (Green: excitatory neuron marker, Red: synaptic protein marker, Blue: nucleus).

Double Disaster

by Eunkyung Lie
Center for Synaptic Brain Dysfunctions

I wanted to express the unexpected happening that occurred during an occurrence of the Morris water maze experiment, an animal behavior experiment. The experiment has a mouse which swims in water and visits a hidden escapable island, which is conducted to study spatial perception and memory. Through several trials, the mouse finds the island between 20 seconds and 1 minute. The mouse in the video is too smart to go directly to the island and eventually escapes the 100 centimeter water tank. It is rare for ordinary mice to find the island, and even if they do, they wait there as they do not always know where to go. I have expressed the characteristics of the mice with the pop art of Andy Warhol’s Silver Car Crash (Double Disaster) and the video art of Nam June Paik’s Egg Grows. An unexpected accident that occurs during the experiment and widely varying results are a double disaster to researchers.

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A Secret Door

by Mijoung Joung
RISP

The particles in the picture are lanthanum carbide (LaC₂) and are used to generate rare isotopes. Isotope separation on-line (ISOL) is a method to generate rare isotopes that do not naturally occur. A variety of isotope targets are used in ISOL facilities around the world. The LaC₂ target is a thin disk under development by the Rare Isotope Science Project (RISP). To achieve high yield of the rare isotope, the particles of LaC₂ should be evenly spread over the whole area of the target disk to prevent local temperatures rise when the particles collide with the proton beam. Temperature rise in small area can cause thermal damage to the target disk. However, crystal structures made of agglomerate particles were observed in some parts of the target disk after fabrication. A hole was formed in the mass of particles, which brought to mind the secret cave that Ali Baba enters.

Self-portrait - the ALICE’s innermost particle detector looks at itself

by Magnus Mager
applied physicist at CERN

The pictured detector elements measure about 20cm by 40cm (diameter x length) and will form the innermost part of a cylindrical particle detector that will soon (2020) be installed in ALICE, an experiment at the Large Hadron Collider (LHC) located at the European Organization for Nuclear Research (CERN), in Geneva, Switzerland.
ALICE (A Large Ion Collider Experiment) studies the origin of the Universe, when matter was like a soup of quarks and gluons. ALICE’s innermost part will be tiled by about 25,000 CMOS particle sensors, each of 1.5cm x 3cm in size. In everyday life, CMOS sensors are found in consumer products, like webcams, but here they are used to take 12.5 Giga-Pixel images of particles coming from high-energy collisions.
Beyond detecting charged particles, these sensors are also sensitive to sudden changes of light levels. This feature was utilised here in an old analogue SLR camera, where the 35mm film was replaced with the CMOS particle sensor, effectively turning it into a digital camera.
The specific "aura" of the resulting photographs is caused by the fully binary operation of the sensor: pixels are either fully black or fully white. Moreover, some noise of white and black speckles is created by operating the camera at very low thresholds. Finally, a black square pattern is a result of opaque metal structures on top of the sensor that is meant for the electrical interconnection of the sensor to the detector circuit boards.

Cantor Bouquet

by CNRS (Centre National de la Recherche Scientifique)

Julia set of an exponential, an object of study in holomorphic dynamical systems. Its shape has been found to be the same as a model from continuum theory in topology: the Lelek fan--also nicknamed the Cantor bouquet--which is an infinite union of lines whose tips are densely distributed near every point on these lines.

Model of a critical orbit

by CNRS (Centre National de la Recherche Scientifique)

Pseudo-hedgehog. Model of the critical orbit of some holomorphic dynamical system. The black zone is made of myriads of strands radiating from the center, too densely packed to be resolved at this scale.

Image 1

by CNRS (Centre National de la Recherche Scientifique)

Hippocampal mouse neurons observed by confocal fluorescence microscopy and reconstructed in 2D by projecting the various optical sections onto the Z plane. The CAR protein was detected using a single antibody.

Image 2

by CNRS (Centre National de la Recherche Scientifique)

Hippocampal mouse neurons observed by confocal fluorescence microscopy and reconstructed in 2D by projecting 34 optical sections onto the Z plane. Using immunofluorescent staining, cell nuclei were stained blue with DAPI.

CMS –The Art of Science Architecture

by Michael Hoch
CERN

Those visitors fortunate enough to visit the CMS (Compact Muon Solenoid) experiment at CERN open in all its glory have often commented it could be displayed as a work of art. CMS is inside the 27-km Large Hadron Collider (LHC) the largest and most powerful particle accelerator ever built. It was designed to explore the secrets of our universe, especially to find evidence for the Brout-Engler-Higgs mass generation mechanism and was rewarded by a Nobel Prize for the discovery. This detector has a shape of a cylinder is including services 20m in diameter and 25m long. It acts as a giant high-speed camera, taking 3D "photographs" of particle collisions from all directions up to 40 million times each second with a spatial resolution in the micrometer scale.
As scientist I am fascinated by the massive scale and the high-tech instruments at CERN which allow mankind to decode nature in an incredibly high precision. As an artist I am charmed by the intrinsic geometry as well colors and scale of the science architecture of these experiments that have the size of mid-size houses. The aesthetics of CMS are associated with its functionality as gigantic high precision camera. Periodic multiplicities emerge out of the physical measurements constrains and the strict scientific precision which allow us to unravel to secretes of nature.

The colors of CMS

by Michael Hoch
CERN

The colors of CMS - view from the bottom of experimental cavern 100m below ground towards the surface.

CMS Space Gate

by Michael Hoch
CERN

CMS Space Gate - 20m diameter of perfect circular geometry with LHC beam pipe.

LHC P5 Interaction Point

by Michael Hoch
CERN

LHC P5 Interaction Point – ultra high resolution CMS pixel detector surrounding the LHC interaction vertex.

Cable Map

by Michael Hoch
CERN

Cable Map – to large CMS segments shifted apart to give access for services work and insight to the cable tracks, which look like the dense road map of modern city.

Nemo meets Marlin

by Soonmin Kang
Center for Correlated Electron Systems

Single crystal X-ray diffraction (SC-XRD) with 4 axes is an important experimental method to verify the structure of materials. It is possible to observe reciprocal lattice of material by performing SC-XRD and the limited reciprocal lattice occasionally shows interesting patterns in accordance with experimental conditions. The image contains the SC-XRD results of vanadium diselenides (VSe2) at 28 K and 300 K. The results seem to resemble a dramatic meeting of the clownfish character Nemo and his father Marlin who appear together in a Disney film. Blurry lines, dots, and splendid colors of the patterns contrast with the dark background, creating a dreamy atmosphere.

Autumn made of superconductor

by Suhan Son
Center for Correlated Electron Systems

Niobium diselenide (NbSe2), a material synthesized from niobium (Nb) and selenium (Se), is not only a quasi-two dimensional layered material, but also a superconductor which shows zero conductivity in low temperatures. In the figure, the atomic force microscope (AFM)* measurement data obtained after making NbSe2 into several tens of atomic layers by mechanical exfoliation is three-dimensionalized. The colors of the figure result from the thickness differences between layers. It is reminiscent of a mountain where the autumn color comes from a combination of colorful colors.
* Atomic force microscope: It can measure atomic-scale forces between the surface and a probe tip and produce topographic maps of the surface of the particle.

Spectrum of SI-STM 1 (Spectroscopic imaging scanning tunneling microscope)

by Kyoung Seok Lee
Center for Correlated Electron Systems

From design to completion of construction of a spectroscopic imaging - scanning tunneling microscope (SI-STM), we went through a colorful spectrum of memories; joy, excitement, frustration, hope, struggle, etc. The main image is an SI-STM system installed inside an acoustic and vibration isolation facility. The blue cylinder is a 14 T magnet liquid helium dewar, where a STM head and a cryostat are kept at an extremely low temperature. By this photomosaic, we attempt to visualize the fact that a scientific instrument can be built not only upon materialistic components, but also upon other intangible abstract elements as well. This mosaic is more meaningful since each and every pixel of it were crafted from real images of the researchers’ lives.

Leaves blowing in the wind : Inside the brain of a living zebrafish

by Moonseok Kim
Center for Molecular Spectroscopy and Dynamics

This is a movie made of 3-dimensional images of the hindbrain of a living larval zebrafish two weeks after fertilization, which was acquired by label-free high-resolution computational adaptive optical microscopy. The complicated distribution of neurons within 100 μm2 of the field of view is shown from the top to a depth of 100 μm of the brain. Due to the refraction and multiple scattering of light inside the zebrafish, it was previously not possible to acquire high-resolution images with conventional label-free imaging techniques. In order to overcome such a limitation, we have developed a novel computational adaptive optical microscopy which can figure out light distortion and retrieve an original image by fundamental physics. The contrast of the diffraction-limited image is unprecedentedly enhanced, thereby even interference fringes at the membrane can be visualized. The magnificent view of the vanishing neurons reminds us of leaves blowing in the autumn wind.

A muscular zebrafish

by Yonghyeon Jo
Center for Molecular Spectroscopy and Dynamics

This is an image of the muscle tissue of the spinal cord area of the zebrafish 10 days after hatching obtained by a high-resolution aberration-compensated microscope technique with non-labeling. Healthy zebrafish swim fast even in small tanks. Thanks to sturdy muscles, zebrafish can swim vigorously. The separation of the erector spinae muscles and the definition of delicate muscle fibers are prominent. Whether he knew that he would soon be anesthetized and imprisoned in a hard agar, I even feel the will and spirit as he raised his muscles to resist his destiny. Asymmetry composition, flexible shape, and dynamics of the light create a sense of rhythm and space.

Z-dragon (Zebrafish-Dragon)

by Jin Hee Hong
Center for Molecular Spectroscopy and Dynamics

The nervous system of vertebrates is surrounded by the myelin sheath that forms an electrically insulating layer. This is essential for a rapid electrical signal propagation. This image represents the myelination of zebrafish which is widely used as animal models. Green fluorescent protein (GFP) is expressed in cells that construct the myelin sheath of a zebrafish and the image is obtained by a confocal laser microscope*. The central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system of a zebrafish 14 days after hatching are shining with green fluorescence. It looks like the shape of a dragon who is eager to ascend. Strong contrast of colors and oblique composition give the sensation of speed and motion.
* Confocal microscopy: A type of microscopy that uses a laser along with particular optical components to create high-resolution images of materials stained with fluorescent probes.

Now you see me : A trace of nanobiochemisty

by Seongchan Kim
Center for RNA Research

A drug delivery system based on RNA as a drug candidate is a novel strategy to treat various diseases at the molecular level, but still has an undesirable biological barrier of efficient delivery to the target site. We have developed a multifunctional RNA delivery vehicle enabling simultaneous bioimaging based on a highly biocompatible fluorescent nanoparticle (blue) and dye-labelled RNA (red) with simple preparation. Real-time study of fluorescence imaging in live cells (green) shows that the nanoparticle favorably localize in cytoplasm and successfully release RNA. This study suggests the excellent potential for simultaneous bioimaging and gene therapy system.

Der Teil und das Ganze trilogy : Contact, Sandbank, Take off at night

by Kyungdeok Kim
Center for Synaptic Brain Dysfunctions

These figures form a trilogy themed by a saying in Oriental philosophy, “There is small universe in each of our brains.” The first figure, “Take off at night”, provides similarity between the brain structure and a city landscape observed from the sky. The second figure, “Contact,” provides appreciation of synapses and the neurons which compose them. In the last figure, “Sandbank,” information is observed like a stream in which we can gaze. Neurons in the images of the trilogy shine by themselves expressing fluorescent proteins. The name of trilogy originated from an immortal classic, “Der Teil und das Ganze” (“the part and the whole” in English), of Werner Heisenberg (1901-1976), a quantum physicist.

Garden in the brain : Connecting link

by Chaehyun Yook
Center for Synaptic Brain Dysfunctions

Reminiscent of a night forest with wild flowers, this figure shows intermingled structures in a mouse brain, connected to each other by synapses. These connect individual neuron and transmits neuronal activity, forming circuits in a complex neural network. Because of their sheer abundance and tiny size, visualizing synapses together with neuronal process structures necessitates specialized labeling strategies in light microscopy. This figure shows a confocal image of medial prefrontal cortex (mPFC) of Fmr1 knock out mouse, a mouse model for autism and intellectual disability, labeled by mGRASP, a labeling technique to visualize a synapse with its pre- and post-synaptic neurons. Synapses (red puncta) are located at the interface of pre- and post-synaptic neuronal processes (green), whose cell bodies (blue) are located in the deep layer. From this image, we can examine synapse distribution of local circuits of Fmr1-KO mPFC, and infer a connectivity correlation of neurological disorders.

The flash

by Eunkyung Lie
Center for Synaptic Brain Dysfunctions

The four images are the dendrite of cultured pyramidal neuron, obtained from a hippocampus. The brain of human beings consists of about 100 billion nerve cells (neurons). Among them, only one billion pyramidal cells are related with long-term memory. By expressing the fluorescent EGFP proteins in cultured neurons, these images were captured while observing the shape or number of dendritic spines aiding study of the formation of synapses in which synaptic neurotransmission occur. The original (upper left) looks like lightning in the night sky and the other three images express glare, feeling, and afterimage by processing the original image. The four images with different colors and textures combine into one great artwork. The dendrite in the brain also looks like the roots of a plant.

Fullerene flower

by Hee Cheul Choi
Center for Artificial Low Dimensional Electronic Systems

Fullerene is the smallest, stable carbon-based molecule. Recently, many researchers focus on solution-based self-crystallization of fullerene molecules due to their various morphologies and crystal structures with different optical and electrical properties. This figure shows the first reported fullerene flower, which has unique flower-shaped crystals with six symmetric petals followed by co-crystallization* of both C60 and C70 molecules. This unique crystal can be observed due to different solubility of C₆₀ and C₇₀ molecules in mesitylene, which promotes nucleation of C₇₀ with sixfold symmetry in the early stage, and it is followed by co-crystallization of both C₆₀ and C₇₀ molecules.
* The process to grow crystal which contains more than two molecules.

Nanoscale Escher’s stairs

by Jewook Park
Center for Artificial Low Dimensional Electronic Systems

Scanning tunneling microscopy (STM) reveals self-assembled cobalt (Co) nano-islands and tantalum (Ta) nano-rods on a copper (Cu) (111) substrate. We prepared spin-polarized STM and observed ferromagnetic Co nano-islands (yellow). Ta nano-rods form staircase shapes. The atomic level surface image (3D rendering, false-colored) brings to mind the lithography print “Relativity” (1953) by the Dutch artist M. C. Escher. At the same time, the image also resembles a virtual space where a yellow island is floating in a blue ocean with waves rising and falling.

Blue Dokkaebi

by Yuree Lee
Center for Plant Aging Research

The picture shows cell wall of a receptacle after parts of floral organs are shed. An inflorescence of the plant Arabidopsis was stained with calcofluor white, a fluorescent dye that binds strongly to cell walls, and observed with a confocal microscope. Blue fluorescence generated by UV excitation wavelengths looks like the imaginary face of Dokkaebi; traditional Korean goblins. Mysterious blue light gives off a creepy look.

Imagining a brain aging : Color of aging

by Junsoo Park
Center for Plant Aging Research

Brains are developed inside heads, which make them difficult to observe. Due to this characteristic, observation of long-term scale biological events, such as a brain’s aging process, was believed to be nearly impossible. If we can relocate a brain in a location where we can directly observe it, wouldn’t it be possible to observe things that we previously couldn't? We implanted hypothalamic tissue on the iris of an eye. The red color indicates angiogenesis (development of new blood vessels, an indicator of successful implantation) of an implanted tissue . Structure and color were modified to our liking. What would be the shape and color of an aged brain? The image reminds us of an insect or the symmetry image of a mandala.

Sorrow of the weak

by Yuree Lee
Center for Plant Aging Research

Calcium is an essential nutrient for development of plants, and required for structural roles in cell walls and membranes, as well as an intracellular messenger in signal transaction. Insufficient calcium uptake degenerates plant development and growth, which is especially severe for flowers and young leaves. The picture shows the death of a young leaf due to the lack of calcium, which looks like a tear drop.

A Seoul map painted with pancreatic islets

by Jung Hoon Cho
Center for Plant Aging Research

Pancreatic islets situated in the pancreas produce several hormones (i.e. insulin, glucagon) playing a central role in retaining glucose homeostasis in our body. To determine the pancreatic islet cell viability after dimethyl sulfoxide (DMSO) treatment, we used live and dead cell markers, calcein AM (green) and EthD-1 (red). Coincidentally, this image looks like a city map of Seoul drawn with pancreatic islets.

The spinning dust

by Olgierd Cybulski
Center for Soft and Living Matter Bartosz Grzybowski Group

The four photographs show self-assembled patterns of micro-particles suspended in a heavy liquid at the top of a container which rotates about the vertical axis, with cyclically varying speed. The particles of three different sizes, densities and colors are lighter than the surrounding liquid, so they are pressed towards the transparent lid of the rotating container. The centrifugal force, resulted from rotation, pushes them toward the center, whereas the shear forces resulted from torsional shaking, correspond to the radial alignment of particles. Different patterns occur at different speed of rotation.

Colloidal brain

by Ruoyu Dong
Center for Soft and Living Matter

A colloidal cluster formed by acoustic trapping, explodes into this wrinkled structure when both an ultrasound and AC electric field are on simultaneously. This is the consequence of a tug of war between the ultrasound confining potential and the AC induced dipole-dipole interaction. It reminds us of the shape of the human cerebral cortex or a swelling fingerprint. They both share a similar formation mechanism; due to the limited space in a two dimensional plane, the structure tends to evolve in the third dimension, creating a convoluted pattern.

Red bamboo in a capillary : Topological defects in liquid crystals

by Sung-Jo Kim
Center for Soft and Living Matter

Confined liquid crystals struggle to find the most comfortable (lowest energy) structure. They want to minimize their elastic free energy while satisfying boundary conditions. These boundary conditions often present inevitable but beautiful imperfections called topological defects. The photo is a polarized optical microscopy* image of nematic Sunset Yellow (SSY) doped with a minuscule amount of polymer. In this chromonic liquid crystal of very small elastic modulus, chiral domains emerge spontaneously with topological defects between two domains. The shape resembles the structure of bamboo.* Polarized optical microscopy: uses filters to polarize light into waves that vibrate only in one direction

Platinum waterfall

by Yaroslav I. Sobolev
Center for Soft and Living Matter

A dull tip of a platinum wire was used as an electrode for applying high-voltage (3 kV) to a sessile water droplet. The purpose of these experiments was to study how the microscopic surface structure of water changes when it's highly charged. Here you see a magnified photo of the wire tip after one of the experiments. Wire is oriented vertically on the image (you can see the clean part of the wire on the top). Even though we used ultrapure water, some brown organic substance was found on the wire tip (bottom of the image) after 1 day under high voltage - probably due to impurities present in ambient air. This image seems like a piece of contemporary art. The contrast between sleek and rough surface and swelling silver waves maximize an abstract atmosphere.

Sunset over Hades

by Karel Goossens
Center for Multidimensional Carbon Materials

‘Deep down in the Underworld, where restless souls are wandering in eternity, yet another day comes to an end. The sky turns dark, but the flames never cease to give off their relentless heat, melting everything that comes too close.’ This is what came to my mind when this beautiful texture of a molten liquid crystal appeared in my polarized light optical microscope*. The image provided some clues about the nanoscale organization of molecules in the birefringent** sample, due to characteristic interference effects. It marked the starting point for a detailed study by X-ray diffraction, which revealed that these molecules form an intricate hexagonal columnar mesophase with a triangular cylinder like morphology.
* Polarized light microscopy: A useful method to generate contrast in birefringent specimens and to determine qualitative and quantitative aspects of crystallographic axes present in various materials.
** Birefringent: Optical property of a material having a refractive index that depends on the polarization and propagation direction of light.

Psychedelic liquid crystals

by Karel Goossens
Center for Multidimensional Carbon Materials

Watch out! Looking for too long through a microscope may cause a massive headache! Yet it is impossible to get bored while looking at the intriguing "fan-like defect" textures of liquid crystals when they are seen through crossed polarizers. The image is an artistic interpretation of the effects of introducing a so-called "full-wave retardation plate" in between the sample and the second polarizer (analyzer). By determining which color appears in which direction, it is possible to obtain information on the orientation of the rod-like aromatic cores of the molecules in a columnar liquid-crystalline mesophase. If the fan-like defects in the southwest-to-northeast direction appear yellow-orange while those in the southeast-to-northwest direction are colored blue-green, then the aromatic segments are most probably oriented parallel to the supramolecular columns. The reverse situation indicates that the aromatic parts are oriented perpendicularly with respect to the long axes of the columns.

Red star

by Seon Gyeong Lee
Center for Genomic Integrity

Mammalians including human have 3 types of adipose tissue. The brown fat tissue generates heat and increases tissue size in response to a cold condition. Brown adipocyte has many mitochondria. The mitochondria cannot generate energy and die in mass when exposed to stress or cytotoxic conditions. We took a picture of a cell after knocking-down a gene which regulates genomic integrity. We stained mitochondria red and nucleus blue, using Mitotracker and DAPI, respectively. Merging image looks like a destroyed red star.

L'Elisir d'amore

by Jung Me Hwang
Center for Genomic Integrity

The title of this work is a love potion (L'elisir d'amore). The heart represents the dramatic encounter and survival of love on the battlefield. It is an image captured using CUPID technology (protein binding analysis technique) which analyzes the binding of proteins. Protein MSH2 (red) and protein MSH3 (green) in association with protein PKC migrate to the same place on the cell membrane after being exposed to the drug PMA. While observing their migration, this work captured the moment when both proteins reach the membrane, highlighting its heart shape. It is a love potion that comes from drugs. Both proteins play an important role by participating in various mechanisms by intracellular genetic factors, and with this technique, its process can be studied in detail.

Cell flower blooming on the nano-grass

by Chaejeong Heo, Chanho Jeong, Tae-il Kim
Center for Neuroscience Imaging Research

While we were developing geometry-controllable nanohairs that mimic cacti spine-like stooped hairs and studying cell migration behavior on these hairy structures, we decided to color a scanning electron microscope (SEM)* image that resembled a flower bud and grass. The decision to make the images into a 2x2 array with vivid colors was a nod to Andy Warhol's pop art format. The work related to this image of neuroblastoma was published in Nanoscale (Nanoscale, 2017, 13 Sep. DOI: 10.1039/C7NR04522K).
* Scanning electron microscope: An advanced microscope that uses a focused beam of electrons to produce an image of a sample's surface.

The root of being, vessels

by Yoo Hyung Kim
Center for Vascular Research

Angiogenesis is an essential element for organ development and maturation. The blood vessels of the brain extend from the outermost surface into the parenchyma like a root of trees spreading out into the soil. At the same time, the blood vessels of the brain form a tighter barrier than the blood vessels of other organs. Overall, these are crucial processes that protect the brain while promoting brain maturation. The figure shows beautifully organized brain vessels of a postnatal 12-day-old mouse. Interestingly, by drawing a tree on the surface of the brain, the figure expresses the feeling that vessel development is essential for life, as root growth is essential for trees. The tree and complex of blood vessels in black and white are reminiscent of a water and ink painting.

The stream of river flowing in our eyes

by Jaeryung Kim
Center for Vascular Research

This image, which looks like a green pillar surrounded by purple ivy, shows Schlemm's canal and blood vessels in an eye. Eyes maintains their shape and intraocular pressure by continuous production of aqueous humor. Schlemm's canal (green color) encircling peripheral cornea has a critical role for the drainage of aqueous humor into blood vessels (purple color). When normal drainage of aqueous humor is impaired, intraocular pressure is increased and the optic nerve is subsequently damaged, inducing glaucoma and vision loss. Researchers in IBS suggested a potential therapeutic target by demonstrating the new mechanism for development and progress of glaucoma. Although this seemingly river in the eye reminds us of a tear, we can feel hope in conjunction with these research results.

Raspberry fields of blood

by Hosung Bae
Center for Vascular Research

Adipose tissue is highly vascularized and most adipocytes (red) are supported by an extensive vascular network (blue). Brown adipose tissue has an especially large network of blood vessels. Mitochondria-packed brown adipocytes burn energy and produce heat. The image of adipocytes is reminiscent to raspberries, which have been known for burning fat. Blood vessels, sustaining brown fat, can be compared with stems that provide raspberries with necessary nutrients. The strong color contrast of red and blue makes the image look dynamic.

Light donut factory

by Cheonha Jeon
Center for Relativistic Laser Science

We have designed a spherical phase mirror that operates at an angle of 45 degrees to generate a donut shaped beam for light matter interaction. This is an interferometric image of the phase mirror surface. The surface is constructed of six different steps, and as the laser light reflects from the surface, the path difference is λ/3 for each step and 2λ for the combined steps. Due to this path difference, when focused, the beam will have a donut shaped profile. This high intensity donut profile beam will generate a pillar of electrons at the center as it interacts with matter. This will result in proton acceleration that focuses at the center and these accelerated protons can be used for proton therapy for cancer. The bending image with radiating circular waves and the interference pattern is associated with op art.

Is it real?

by Beum-Chang Kang
Center for Genome Engineering

When a gene of interest is introduced into a plant cell together with a fluorescent protein gene, the presence or absence of the gene can be determined through the observation of fluorescence. The most difficult factor to overcome while observing the fluorescence of transformed plant tissue with confocal microscopy is autofluorescence from plant cells. Autofluorescence may look green like a fluorescent protein, but the real color is different. The photograph shows the expression of a fluorescent protein introduced in stomata in plant tissues using confocal microscopy*. The image looks like vivid yellow-green stains on an aerial photo of mountains covered with autumn leaves, creating a disparate and peculiar atmosphere.
* Confocal laser microscopy: A type of microscopy that uses a laser along with particular optical components to create high-resolution images of materials stained with fluorescent probes.

Stormy night

by Seung-Bu Park, Sun-Seon Lee, Jung-Eun Chu
Center for Climate Physics

Hurricanes (typhoons) are feared for their destructive power, but when simulated on computers they exhibit unprecedented natural beauty. This image shows the time-evolution of a pair of computer-generated typhoons over the Indian Ocean and their interaction with a meandering westerly wind jet. The numerical model used for this animation captures the dynamics of the global coupled atmosphere/ocean/land and ice system with a resolution of about 25 km. ICCP scientists conducted the numerical experiment on a supercomputer in the United States. The title "Stormy Night" was inspired by Vincent van Gogh's masterpiece, The Starry Night.

A message from the past

by Axel Timmermann, Karl Stein, Elke Zeller
Center for Climate Physics

"Li circuli delli rami degli alberi segati mostrano il numero delli suoi anni, e quali furono più umidi o più secchi la maggiore o minore loro grossezza."
(The circles of the branches of the sawn trees show the number of their years, and which ones were damp or dry the greater or lesser their thickness.)
Leonardo da Vinci, Trattato della Pittura
Tree growth only occurs in the outermost section of the tree, in a layer under the bark that is only a few cells thick. Outside tropical regions, the rate of tree growth changes throughout the year, creating distinct annual rings. Leonardo da Vinci first related the thickness of the annual rings to the amount of rainfall received during the year. ICCP scientists use tree ring data to gain information about past climates and past changes in ecosystems. The image shows 4 sections of a tree core sampled by Axel Timmermann from a high elevation site in Hawaii. In addition to using the visual images, scientists also analyze stable carbon isotopes within the tree rings, which give them an insight into subseasonal climate variations and changes in photosynthesis.

The Beauty of Evolution:the Structure of the Drosha Protein

by Sung Chul Kwon
Center for RNA Research)

A type of regulatory RNA called microRNA involved in almost all biological processes such as development, aging, cancer, differentiation and immune response, is generated by two consecutive processing steps involving Drosha and Dicer proteins. This figure shows the bottom part of a Drosha protein whose structure has been solved 12 years after its first identification. Drosha has the same backbone structure as Dicer (red and green), plus some unique regions (yellow and white). Thanks to this information, we can infer how Drosha diverged from the ancestral Dicer and obtained its new function.

Milky Way in the Brain

by Haram Park
Center for Synaptic Brain Dysfunctions

The hippocampus is the "sea horse" shaped structure located bilaterally within mammalian brain. It is part of the limbic system, and is thought to contribute to information consolidation, spatial memory, and both short and long term memory. In the image, we stained star-shaped astrocytes, known as astroglia in the hippocampal region of the brain with GFAP, glial fibrillary acidic protein. The stained cells are represented in white and they look like white stars set within a contrastingly dark background, akin to the milky way observed in the night sky.

The Pond

by Junyeop Roh
Center for Synaptic Brain Dysfunctions

Claude Monet has been immortalized by his renowned painting of the pond dotted by colorful water lilies. When calcium-binding proteins (Parvalbumin, in red), synaptic proteins (PTP delta, in green) and DNA (in blue) are stained in the layer 2/3 of mouse medial prefrontal cortex region, the resultant image is remarkably reminiscent of the masterpiece. The medial prefrontal cortex has been extensively studied as the region mediating social behavior, decision making and, in humans, personality expression.

Chamber for the Mystery Matter

by Chang Hyon Ha
Center for Underground Physics

The photo shows the innermost view of the dark matter experiment, called COSINE, situated 700 meters below the surface at Yangyang underground laboratory. The cylindrical cells in the middle center encase ultra-pure NaI(Tl) crystals which are used to collect a faint light induced by the interaction of dark matter and the crystal nuclei. In order to distinguish the signal from external noise entering outside of the crystals, we position the crystals in a large chamber where all surfaces are laminated by reflective films that work like a mirror. Then, photons from the noise or any other light in the chamber can easily bounce back and forth and be contained, creating the exotic image.

World of Diversity

by Young-Im Kim,Jihoon Choi
Center for Axion and Precision Physics

This work of art shows that various resonant modes are generated in a variety of sizes resonator visually. A resonator is a device that records a specific frequency and vibration using a resonance phenomenon that is amplified when a specific frequency is found. Various studies using such resonance phenomenon is being done. Resonance is a phenomenon that can be found everywhere in our world. In one of the resonator to various resonance modes exist similar to our world people have a variety of looks and emotions.

Drowning Lung

by Seung-Jun Lee, Gou Young Koh
Center for Vascular Research

The image is a visualization of vascular leakage in the lungs of a mouse model of sepsis. An infection or injury can lead to sepsis where severe inflammatory response and vascular leakage occur throughout the body. These septic challenges lead to multiple organ failure, including accumulation of fluid in the lungs. We have demonstrated the beneficiary role of the endothelial tyrosine kinase receptor Tie2 in ameliorating vascular leakage and sepsis.

Material World through Kaleidoscope

by Beom Seo Kim
Center for Correlated Electron Systems

Molybdenum di-telluride (MoTe₂) has drawn growing attention due to its application possibility. It has six-fold symmetry in the electronic structure due to its crystal structure. The electronic structure of MoTe₂ was measured by angle resolved photoemission and images were constructed by folding constant energy contour of the experimental data. Each image represents constant energy contour at a specific binding energy. While the image drastically changes over different binding energies, the six-fold symmetry remains intact. The six-fold symmetry is reminiscent of the colors of a peacock or a view through a kaleidoscope.

The Scream of Electrons

by Shoresh Soltani
Center for Correlated Electron Systems

Portraits of electron pockets living in a peculiar quantum world on the surface of strontium titanate. These ghostly beings which resemble The Scream by Edvard Munch, reveal themselves when we shed synchrotron light on a flat, shiny and clean surface of an single crystal in very low temperature and ultrahigh vacuum. They are responsible for electrical conductance on the surface of an insulating strontium titanate crystal which is the basis of oxide electronics. Different colors in each image, speak for different electron densities.

The Nose of Plant

by Taek Han Yoon
Center for Plant Aging Research

Plant's respiratory organs are called 'stomata'. They are responsible for photosynthesis and therefore are essential to the life of most of the species on Earth. Via Field Emission Scanning Electron Microscopy(FE SEM)^* imaging technique, we were able to reveal that stomata are shaped like a heart....maybe a hint to Mother Earth’s love?

Autumn Graphene Leaves on Copper Snow

by Youngwoo Kwon, Rodney S. Ruoff
Center for Multidimensional Carbon Materials

Copper foil is one the most common substrates for graphene growth. Because of the unique crystalline structure of graphene ('2D honeycomb' structure), growth of graphene happens in certain patterns such as hexagons or, as in this case, hexagrams (also referred to as "sexagrams"). This Image by Scanning Electron Microscope (SEM)^* shows the pattern of graphene growth at the micron scale - quite on time to greet the fall season with beautiful autumn/winter leaves on a copper landscape on a campus such as UNIST!

Star Shower in the Brain

by Sangkyu Lee, Hyeonjin Jung
Center for Cognition and Sociality

Brain's outer layer near the skull consists of cerebral cortex neurons. Fluorescent proteins of three different colors (green, red, far-red) were expressed in the neurons under developmental stage by injecting expression plasmids into ventricle regions of uterus (embryonic day 15) followed by electroporation with stick electrodes. This fluorescence image was taken after cross-section of brain sample.

Rainbow in the Eye

by Do Young Park
Center for Vascular Research

Retinal vessels grow from center to periphery after birth. Retinal vessels are composed of vascular endothelial cells and pericytes. Pericytes cover endothelial cells and are important for angiogenesis, survival of endothelial cells, and barrier function. In this image, retinal blood vessels (in green) of mouse retina at postnatal day 5 show sprouting peripherally. Pericytes (red) are shown in mosaic pattern from Cre-induced loxP recombination to make tdtomato signals in pericytes.

Nature Puzzle

by Sunghyun Hong, Sowook Seo, Soohyun Jung
Center for Plant Aging Research

Fluorescences in Cotyledon epidermis of 2 weeks grown Arabidopsis expressing H2B-GFP (Nucleus localized) and SYP122-GFP (Plasma membrane) were detected by LSM780 fluorescent confocal microscopy. Bright green dots are nuclei of epidermal cells and green lines are membranes. Small paired cells containing smaller green spots are guard cells which control gas exchange by opening and closing the stomata. Red fluorescent spots are chloroplasts which absorb sunlight to produce food and contain various fluorescent compounds such as anthocyanin causing autofluorescence. Shapes of epidermal cells are irregular like pieces of jigsaw puzzle.