Korea
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First Instance of Negative Effects from Terahertz-Range Electromagnetic Waves
Professor Philhan Kim
Electromagnetic waves (EM-wave) in the terahertz range were widely regarded as the “dream wavelength” due to its perceived neutrality. Its application was also wider than X-rays. However, KAIST scientists have discovered negative effects from terahertz EM-waves.
Professor Philhan Kim of KAIST’s Graduate School of Nanoscience and Technology and Dr. Young-wook Jeong of the Korea Atomic Energy Research Institute (KAERI) observed inflammation of animal skin tissue when exposed to terahertz EM-waves.
The results were published in the online edition of Optics Express (May 19, 20104).
Terahertz waves range from 0.1 to 10 terahertz and have a longer wavelength than visible or infrared light. Commonly used to see through objects like the X-ray, it was believed that the low energy of terahertz waves did not inflict any harm on the human body.
Despite being applied for security checks, next-generation wireless communications, and medical imaging technology, little research has been conducted in proving its safety and impact. Conventional research failed to predict the exact impact of terahertz waves on organic tissues as only artificially cultured cells were used.
The research team at KAERI developed a high power terahertz EM-wave generator that can be used on live organisms. A high power generator was necessary in applications such as biosensors and required up to 10 times greater power than currently used telecommunications EM-wave. Simultaneously, a KAIST research team developed a high speed, high resolution video-laser microscope that can distinguish cells within the organism.
The experiment exposed 30 minutes of terahertz EM-wave on genetically modified mice and found six times the normal number of inflammation cells in the skin tissue after six hours. It was the first instance where negative side effects of terahertz EM-wave were observed.
Professor Kim commented that “the research has set a standard for how we can use the terahertz EM-wave safely” and that “we will use this research to analyze and understand the effects of other EM-waves on organisms.”
2014.06.20 View 8749 -
KAIST studnets win 2014 Creative Vitamin Project Competition
A team of KAIST students have won the grand prize for the “2014 Creative Vitamin Project Competition” held on May 28, 2014 in Seoul. The event was co-hosted by the Ministry of Science, ICT and Future Planning, National Information Society Agency, and Korea IT Convergence Technology Association. The Creative Vitamin Project is the Korean government’s initiative to grow the Korean economy and generate job creation by applying science and technology, information and communications technology in particular, to the existing industry and social issues.
The winners were Hyeong-Min Son, a student in the master’s program in the Department of Civil and Environmental Engineering, KAIST and Su-Yeon Yoo, a Ph.D. student from the Graduate School of Information Security, KAIST.
Son and Yoo proposed a sustainable crop protection system using directional speakers. This technique not only efficiently protects crops from harmful animals, but also effectively guides the animals outside the farmland.
Kwang-Soo Jang, the Director of the National Information Society Agency, said, “This competition provides an opportunity to develop public consensus and interest in the Creative Vitamin Project. We hope that through the participation of all citizens, the project can become an instrument to realizing the creative economy.”
2014.06.18 View 9647 -
MOU for Intellectual Property Protection and Patent Litigation System Development
KAIST and the Patent Court of Korea signed a memorandum of understanding (MOU) to cooperate for the protection of intellectual property rights and education of patent litigation system. About 20 attendees including President Steve Kang of KAIST and Chief Justice Young-Ho Kang of the Patent Court of Korea met on May 30 at KAIST.
Through the MOU, KAIST will provide technical advice needed for the patent application process. Likewise, the Patent Court will support KAIST researchers and students by offering patent application classes and patent trial observation programs.
After the ceremony, the Patent Court hosted a class under the theme “A more realistic patent process for scientists.”
The first speaker, the Honorable Chun-Woo Son, a former judge, shared a story in which a research achievement was wasted because of scientists’ ignorance of the patent system and its procedures.
The next speaker was Dong-Yeob Kim, a patent examiner. In his lecture, titled “Proper Compensation for Inventions,” Kim emphasized the economic importance of registering patents even if the research achievements of scientists are minor.”
To further this MOU, KAIST and the Patent Court of Korea will continue to expand their cooperation into the adjacent scientific community, Daedeok Innopolis.
2014.06.03 View 7082 -
Professor Jae-Kyu Lee Elected to Head the Association for Information Systems
Jae Kyu Lee, HHI (Hyundai Heavy Industries, Co., Ltd.) Chair Professor, College of Business at KAIST, was elected to lead the world major academic society, Association for Information Systems (AIS), from July 2015 to June 2016. Professor Lee will be the first Korean to serve the organization as president. From July 2014 to June 2015, he will serve as president-elect.
Currently, Professor Lee is the Director of EEWS (Energy, Environment, Water, and Sustainability) Research Center at KAIST, focusing on research and development in finding solutions to critical issues facing humanity. He also played a pivotal role in the conclusion of a memorandum of understanding between HHI and KAIST in June 2013 to establish HHI-KAIST EEWS Research Center within the KAIST campus.
The AIS is the premier professional association for individuals and organizations who lead the research, teaching, practice, and study of information systems worldwide.
A news article on his appointment:
Asian Scientist, May 16, 2014
Korean Engineer To Lead The Association For Information Systems
http://www.asianscientist.com/academia/korean-engineer-lead-association-information-systems-2014/
2014.05.19 View 9982 -
Dr. Sung-Gu Kim of KARI receives the 10th KAIST Jung-Hun Cho Academic Award
KAIST President Steve Kang awarded the 10th "KAIST Jung-Hun Cho Academic Award" to Dr. Sung-Gu Kim of Korea Aerospace Research Institute (KARI) along with Byeong-Sup Park, a graduate student of KAIST Aerospace Engineering, Hee-Won Chae of Korea University, and Jin-Hyung Noh of Kongju National University High School on May 13, 2014.
Dr. Sung-Gu Kim was recognized for his development of a 30-ton class reproduction cooling burner and the securing of essential factor technology for liquid-fuel rocket engines on the Naro project.
The KAIST Jung-Hun Cho Academic Award was established to commemorate Jung-Hun Cho who was killed while researching in the rocket laboratory on May 13, 2003. From 2005, young scientists from the Aerospace Engineering field have been recognized every year. One student each from KAIST, Korea University, and Kongju National University High School, where the honorary doctorate Dr. Cho attended, has been chosen as a scholarship recipient.
The KAIST Jung-Hun Cho Academic Award was established with USD 460,000 in funds donated from Cho's family.
2014.05.17 View 8757 -
Professor Jae-Kyu Lee Elected to Head the Association for Information Systems
Jae Kyu Lee, HHI (Hyundai Heavy Industries, Co., Ltd.) Chair Professor, College of Business at KAIST, has been elected to lead the world major academic society, Association for Information Systems (AIS), from July 2015 to June 2016. Professor Lee will be the first Korean to serve the organization as president. From July 2014 to June 2015, he will serve as president-elect.
Currently, Professor Lee is the Director of EEWS (Energy, Environment, Water, and Sustainability) Research Center at KAIST, focusing on research and development in finding solutions to critical issues facing humanity. He also played a pivotal role in the conclusion of a memorandum of understanding between HHI and KAIST in June 2013 to establish HHI-KAIST EEWS Research Center within the KAIST campus.
The AIS is the premier professional association for individuals and organizations who lead the research, teaching, practice, and study of information systems worldwide.
2014.05.14 View 9103 -
Clear Display Technology Under Sunlight Developed
The late Professor Seung-Man Yang
The last paper of the late Professor Seung-Man Yang, who was a past master of colloids and fluid mechanics
Practical patterning technology of the next generation optical materials, photonic crystals
The mineral opal does not possess any pigments, but it appears colorful to our eyes. This is because only a particular wavelength is reflected due to the regular nano-structure of its surface. The material that causes selective reflection of the light is called photonic crystals.
The deceased Professor Seung-Man Yang and his research team from KAIST’s Chemical and Biomolecular Engineering Department ha ve developed micro-pattern technology using photolithographic process. This can accelerate the commercialization of photonic crystals, which is hailed as the next generation optics material.
The research results were published in the April 16th edition of Advanced Materials, known as the most prestigious world-renowned journal in the field of materials science.
The newly developed photonic crystal micro-pattern could be used as a core material for the next generation reflective display that is clearly visible even under sunlight. Since it does not require a separate light source, a single charge is enough to last for several days.
Until now, many scientists have endeavored to make photonic crystals artificially, however, most were produced in a lump and therefore lacked efficiency. Also, the low mechanical stability of the formed structure prevented from commercialization.
In order to solve these problems, the research team has copied the nano-structure of opals.
Glass beads were arranged in the same nano-structure as the opal on top of the photoresist material undergoing photocuring by ultraviolet light. The glass beads were installed in the photoresist materials, and UV light was selectively exposed on micro regions. The remaining region was developed by photolithographic process to successfully produce photonic crystals in micro-patterns.
The co-author of the research, KAIST Chemical and Biomolecular Engineering Department’s Professor Sin-Hyeon Kim, said, “Combining the semiconductor process technology with photonic crystal pattern technology can secure the practical applications for photonic crystals.”He also predicted “This technology can be used as the key optical material that configures the next generation reflective color display device with very low power consumption.”
The late Professor Seung-Man Yang was a world-renowned expert in the field of colloids and fluid mechanics. Professor Yang published over 193 papers in international journals and continued his research until his passing in last September.
He received Du Pont Science and Technology Award in 2007, KAIST Person of the Year 2008, Gyeong-Am Academy Award in 2009, as well as the President’s Award of the Republic of Korea in March 2014. The researchers devoted the achievement of this year’s research to Professor Yang in his honor.
Research was conducted by KAIST Photonic-fluidic Integrated Devices Research Team, as a part of the Creative Research Program funded by the Ministry of Science, ICT and Future Planning, Republic of Korea.
Figure 1. Opal [left] and the nano glass bead arrangement structure within the opal [right]
Figure 2. Process chart of the photonic crystal micro-pattern formation based on photolithography
Figure 3. Opal structure [left] and inverted structure of the opal [right]
Figure 4. Photonic crystal micro-pattern in solid colors
Figure 5. Photonic crystal micro-pattern that reflects two different crystals (Red, Green) [left] and pixelated pattern of photonic crystal in three primary colors (Red, Green, Blue) [right] that is applicable to reflective displays
2014.05.14 View 11315 -
Yong-Joon Park, doctoral student, receives the Korea Dow Chemical Award 2014
Yong-Joon Park, a Ph.D. candidate of Materials Science and Engineering at KAIST, received the Korea Dow Chemical Award 2014, a prestigious recognition of the year’s best paper produced by students in the field of chemistry and materials science.
The award ceremony took place on April 18, 2014 at Ilsan Kintex, Republic of Korea.
The Korea Dow Chemical Award is annually given by Korea Dow Chemical and the Korean Chemical Society to outstanding papers produced by graduate and postdoc students. This year, a total of nine papers were selected out of 148 papers submitted.
The title of Park’s paper is “The Development of 3D Nano-structure-based New Concept Super-elastic Materials.” This material could be used in flexible electronic devices such as displays and wearable computers.
2014.05.03 View 8065 -
The First Winner of Sang Soo Lee Award in Optics and Photonics
The Optical Society of Korea and the Optical Society of America selected Mario Garavaglia, a researcher at the La Plata Optical Research Center in Argentina, as the first winner of the Sang Soo Lee Award.
Dr. Garavaglia has been selected to receive the award in recognition for his research and education in the field of optics and photonics in Argentina.
The Sang Soo Lee Award, co-established by the Optical Society of Korea and the Optical Society of America in 2012, is awarded to an individual who has made a significant impact in the field. Special considerations are made for individuals who have introduced a new field of research, helped establish a new industry, or made a great contribution to education in the field.
The award is sponsored by the late Doctor Sang Soo Lee's family, the Optical Society of Korea, and the Optical Society of America.
The late Doctor Sang Soo Lee (1925~2010) has been widely known as the 'father of optics' in Korea. He was an active educator, researcher, and writer. Dr. Lee served as the first director of the Korea Advanced Institute of Science (KAIS), the predecessor to KAIST, which was Korea's first research oriented university.
Dr. Lee also served as the 6th president of KAIST between 1989 to 1991 and was a KAIST professor of physics for 21 years. He oversaw the completion of 50 Ph.D. and 100 Master's students as well as published 230 research papers.
Philip Bucksbaum, the president of the Optical Society of America, commented,
"Garavaglia has been an example to the spirit of the Sang Soo Lee Award. The award is the recognition for his tireless efforts and commitment to the development of optics and photonics in Argentina through his teaching, research, and publications."
Jeong-Won Woo, the president of the Optical Society of Korea, said,
"The Sang Soo Lee Award is given to researchers who have consistently contributed to the development of the field. Garavaglia is a well respected researcher in Argentina, and we are truly happy with his selection."
Dr. Garavaglia established a spectroscopy, optic, and laser laboratory in Universidad Nacional de La Plata in 1966. He founded the Center for Optical Research in 1977 and served as the chief of the laboratory until 1991.
Dr. Garavaglia published over 250 research papers in the fields of classical optics, modern optics, photoemission spectroscopy, and laser spectroscopy. He has also received the Galileo Galilei Award from the International Commission for Optics in 1999.
2014.03.31 View 9755 -
High Resolution 3D Blood Vessel Endoscope System Developed
Professor Wangyeol Oh of KAIST’s Mechanical Engineering Department has succeeded in developing an optical imaging endoscope system that employs an imaging velocity, which is up to 3.5 times faster than the previous systems. Furthermore, he has utilized this endoscope to acquire the world’s first high-resolution 3D images of the insides of in vivo blood vessel.
Professor Oh’s work is Korea’s first development of blood vessel endoscope system, possessing an imaging speed, resolution, imaging quality, and image-capture area. The system can also simultaneously perform a functional imaging, such as polarized imaging, which is advantageous for identifying the vulnerability of the blood vessel walls.
The Endoscopic Optical Coherence Tomography (OCT) System provides the highest resolution that is used to diagnose cardiovascular diseases, represented mainly by myocardial infarction.
However, the previous system was not fast enough to take images inside of the vessels, and therefore it was often impossible to accurately identify and analyze the vessel condition. To achieve an in vivo blood vessel optical imaging in clinical trials, the endoscope needed to be inserted, after which a clear liquid flows instantly, and pictures can be taken in only a few seconds.
The KAIST research team proposed a solution for such problem by developing a high-speed, high-resolution optical tomographic imaging system, a flexible endoscope with a diameter of 0.8 mm, as well as a device that can scan the imaging light within the blood vessels at high speed. Then, these devices were combined to visualize the internal structure of the vessel wall.
Using the developed system, the researchers were able to obtain high-resolution images of about 7 cm blood vessels of a rabbit’s aorta, which is similar size to human’s coronary arteries. The tomography scan took only 5.8 seconds, at a speed of 350 scans per second in all three directions with a resolution of 10~35㎛.
If the images are taken every 200 ㎛, like the currently available commercial vascular imaging endoscopes, a 7cm length vessel can be imaged in only one second.
Professor Wangyeol Oh said, “Our newly developed blood vessel endoscope system was tested by imaging a live animal’s blood vessels, which is similar to human blood vessels. The result was very successful.”
“Collaborating closely with hospitals, we are preparing to produce the imaging of an animal’s coronary arteries, which is similar in size to the human heart,” commented Professor Oh on the future clinical application and commercialization of the endoscope system. He added, “After such procedures, the technique can be applied in clinical patients within a few years.”
Professor Oh’s research was supported by the National Research Foundation of Korea and the Global Frontier Project by the Korean government. The research results were published in the 2014 January’s edition of Biomedical Optics Express.
Figure 1: End portion of optical endoscope (upper left)
Figure 2: High-speed optical scanning unit of the endoscope (top right)
Figure 3: High-resolution images of the inside of in vivo animal blood vessels (in the direction of vascular circumference and length)
Figure 4: High-resolution images of the inside of in vivo animal blood vessels (in the direction of the vein depth)
2014.03.25 View 10227 -
The Korea Herald: Synthetic Biology Holds Key to Future
The Korea Herald
, a leading English newspaper in Korea, published an article on the production of gasoline by a metabolically engineered microorganism. For the article, please go to the link below:
The Korea Herald
March 14, 2014
"Synthetic biology holds key to future"
KAIST professor makes breakthrough in biorefining using E. coli’s metabolic process
http://www.koreaherald.com/view.php?ud=20140314001343
2014.03.17 View 6936 -
The 4th Meeting of Korea and Denmark Alliance for Green Growth
President Steve Kang attended the “Fourth Meeting of Korea and Denmark Alliance for Green Growth” which took place on March 6, 2014 at the Shilla Hotel in Seoul. President Kang was a keynote speaker at the meeting and gave a lecture on sustainable energy.
KAIST and the Technical University of Denmark (DTU) signed a memorandum of understanding (MOU) on the “Cooperation for Innovation and Entrepreneurship” at the meeting.
In the MOU, KAIST and DTU agreed to post the information on their websites regarding the patents acquired through the implementation of joint research programs. In addition, KAIST students will attend conferences and idea competitions organized by DTU, e.g., the Green Challenges. DTU students will participate in KAIST’s conferences and competitions including “Startup KAIST Global Idea Competition.”
2014.03.07 View 7971