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KAIST holds the 2015 KAIST-MIT-Technion International Symposium on Nano Science
The 2015 KAIST-MIT-Technion International Symposium on Nano Science was held on August 11, 2015 at the KAIST campus. The event took place under three subtopics: Materials for Production and Storage of Renewable Energy, Functional Materials, and Multiferroic Materials.
The joint symposium invited more than 300 experts in material science and engineering including ten speakers and panelists. From MIT (Massachusetts Institute of Technology), Professors Harry L. Tuller and Geoffrey S. Beach in the Department of Material Engineering, as well as Professor Gregory Rutledge in the Department of Chemical Engineering joined the symposium. Professor Avner Rothschild in the Department of Material Engineering and Professor Yair Ein-Eli in the Department of Chemical Engineering at Technion Institute of Technology in Israel also participated.
From KAIST, Professors Il-Doo Kim, Byong-Guk Park, and Yeon-Sik Jung in the Department of Materials Science and Engineering, Professor Chan-Ho Yang in the Department of Physics, and Professor Doh-Chang Lee in the Department of Chemical and Biomolecular Engineering spoke at the event. The list of topics included “Next Generation Lithium-Air Battery,” “Nano Materials for High Performance Energy Storage System,” and “Iron Oxide Nanoparticles Photoelectrode for the Conversion and Storage of Solar Energy.”
In its efforts to promote cooperation among the three universities, KAIST plans to send six students to MIT and one student to Technion for joint research.
Professor Il-Doo Kim, who organized the symposium said, “We believe this kind of international gathering will serve as an opportunity for scholars from leading universities to share their expertise in material science and help them better understand on the recent trends in nanoscience and its related technology.”
2015.08.12 View 12380 -
The College of Information Science & Technology names its Alumnus of the Year 2014
The College of Information Science & Technology (CIST), KAIST, selected Tae-Kyung Yoo, the Chief Executive Officer of Lumens, Inc., a Korean company producing semiconductors and light emitting diodes (LEDs), as its Alumnus of the Year 2014.
The award ceremony took place on September 19, 2014 at the KAIST Institute with the participation of the university’s senior management and students.
Mr. Yoo was recognized for his pioneering work to develop the LED industry in Korea as the next-generation growth engine for the nation’s economy.
After the ceremony, he gave a talk entitled “The Past and Future of the LED Industry: Its Important Role in the Change of Korean Industry.”
The CIST created the Alumnus of the Year 2014 award, for the first time this year, to appreciate its alumni’s contribution to the advancement of the industrial and academic sectors of Korean information science and technology, and it will continue presenting the award from this year onwards.
2014.09.22 View 9255 -
Opening of "Education Donation Center" for Knowledge Sharing
KAIST is a leader in knowledge-sharing services for the educationally underprivileged. KAIST held the opening ceremony of the Education Donation Center at its Munji Campus on July 4, 2014 and was appointed as a “2014 Chungcheong-Gangwon province model local education donation center” sponsored by the Education Ministry of Korea and Korea Foundation for the Advancement of Science and Creativity.
The Education Donation Center (EDC) will integrate programs run by the Chungcheong-Gangwon province education donation organizations and introduce them to local chapter organizations. The EDC will recommend new donation organizations to the organizations in need. To ensure efficient donation, the EDC will consult programs of donation organizations. The EDC will also suggest regionally suitable education donation programs. KAIST will provide three staff members, six graduate students, and one to manage the career counselor to the center.
Joo-Sung Lee of the Business & Technology Management Department is the professor in charge of the EDC. He explained, “The center is the medium between the newly participating education donation organizations and the demand organizations. I will invest every effort to provide high-quality educational benefits to educationally underprivileged people."
KAIST has also been running an education service group called ‘Midam Scholarship’, an online education donation group called ‘Chalk’, and science camp programs for youth to establish the sharing and collaboration culture of KAIST.
2014.07.10 View 12970 -
Professor Won Do Heo on LED Light Technology for Controlling Proteins in Living Cells
With the newly developed LED technology, Professor Won Do Heo at the College of Life Science and Bioengineering, KAIST, was able to suppress cell migration and division when cells are exposed to LED light. This suggests a breakthrough to apply in future cancer cell research.
Professor Heo talked about the impact of his research in the following excerpt from a news article:
“We are already conducting research on the spread of cancer, as well as brain science in animal models with the Light-Activated Reversible Inhibition by Assembled Trap. I believe this technology will be a breakthrough in investigating cancer treatments and the function of neurons in a complex neural network, which existing technologies have not been able to do.”
From EE Times Europe, June 19, 2014
“LED Light Technology Controls Proteins in Living Cells”
http://www.ledlighting-eetimes.com/en/led-light-technology-controls-proteins-in-living-cells.html?cmp_id=7&news_id=222909336
2014.06.22 View 9732 -
Professor Kyu-Young Whang receives the PAKDD Distinguished Contributions Award
Professor Kyu-Young Whag
Dr. Kyu-Young Whang, Distinguished Professor from the Department of Computer Science, KAIST, has received the 2014 Distinguished Contributions Award from the Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD). PAKDD is the leading academic international conference on data mining held in Asia/Pacific. This year’s international conference was held from 13th to 15th May at Tainan, Taiwan.
As a life member of the PAKDD Steering Committee, Professor Whang worked for the development of the data mining field in the Asia-Pacific region, and his contribution to the international database and data-mining field has been widely recognized.
The PAKDD Distinguished Contributions Award has been awarded to a total of six people until now, including Professor Whang, and he is the first Korean to receive this award.
Professor Whang has also a history of receiving the Outstanding Contributions Award in 2011 from the Database Systems for Advanced Applications (DASFAA), the prestigious database academic conference in the Asia-Pacific region. The database and data mining field in the region was barren 20 years ago, but through the efforts and contributions of many researchers, including Professor Whang, it has now leapt to the level of being the equal of North American and European researchers.
In fact, three academic organizations in the current international database field are led by professors in the Asia-Pacific region. The IEEE ICDE (Institute of Electrical and Electronics Engineers Technical Committee on Data Engineering) is led by Professor Whang; the VLDB (Very Large Data Base) Endowment by Professor Beng Chin Ooi from National University of Singapore (NUS); and the ACM SIGMOD (Association for Computing Machinery Special Interest Group on Management of Data) by Professor Don Kossmann from ETH Zurich.
2014.05.26 View 12217 -
An Education Donation Club at KAIST Received the Education Minister's Award in 2013
Chalk, one of the student clubs at KAIST, shares knowledge by providing free online classes to teenage students in Korea via Internet.
Chalk, a KAIST student club which donates their educational knowledge, received an award from the Education Minister of the Republic of Korea at the 2nd Donation for Education Award held on December 16th, 2013 at the Plaza Hotel in Seoul.
The Donation for Eduation Award aims to find and reward corporations, organizations, and individuals, which have actively contributed to growing the dreams and talents of students, as well as revitalizing the culture of donation for education. It has been awarded by the Ministry of Education since 2012 to promote the awareness and participation of students for education.
Chalk provides free online video lectures on www.playchalk.com and runs a mentoring-based education program. The club has been recognized for offering online courses, math and science classes in particular, to teenage students who are from socially and economically less privileged backgrounds.
Chalk was founded by five KAIST students in 2011. Their ultimate goal is to create a society where students can fully enjoy the benefits of education, regardless of their economic conditions. About 60 undergraduate students currently participate in the club, with more than 5,000 students attending over 160 lectures without any cost.
2014.01.07 View 13206 -
Mechanism in regulation of cancer-related key enzyme, ATM, for DNA damage and repair revealed
Professor Kwang-Wook Choi
A research team led by Professor Kwang-Wook Choi and Dr. Seong-Tae Hong from the Department of Biological Sciences at KAIST has successfully investigated the operational mechanism of the protein Ataxia Telangiectasia Mutated (ATM), an essential protein to the function of a crucial key enzyme that repairs the damaged DNA which stores biometric information. The results were published on December 19th Nature Communications online edition.
All organisms, including humans, constantly strive to protect the information within their DNA from damages posed by a number of factors, such as carbonized materials in our daily food intake, radioactive materials such as radon emitting from the cement of buildings or ultraviolet of the sunlight, which could be a trigger for cancer.
In order to keep the DNA information safe, the organisms are always carrying out complex and sophisticated DNA repair work, which involves the crucial DNA damage repair protein ATM. Consequently, a faulty ATM leads to higher risks of cancer.
Until now, academia predicted that the Translationally Controlled Tumor Protein (TCTP) will play an important role in regulating the function of ATM. However, since most of main research regarding TCTP has only been conducted in cultured cells, it was unable to identify exactly what mechanisms TCTP employs to control ATM.
The KAIST research team identified that TCTP can combine with ATM or increase the enzymatic activity of ATM. In addition, Drosophilia, one of the most widely used model organisms for molecular genetics, has been used to identify that TCTP and ATM play a very important role in repairing the DNA damaged by radiation. This information has allowed the researchers to establish TCTP’s essential function in maintaining the DNA information in cell cultures and even in higher organisms, and to provide specific and important clues to the regulation of ATM by TCTP.
Professor Kwang-Wook Choi said, “Our research is a good example that basic research using Drosophilia can make important contributions to understanding the process of diseases, such as cancer, and to developing adequate treatment.”
The research has been funded by the Ministry of Science, ICT and Future Planning, Republic of Korea, and the National Research Foundation of Korea.
Figure 1. When the amount of TCTP protein is reduced, cells of the Drosophila's eye are abnormally deformed by radiation. Scale bars = 200mm
Figure 2. When the amount of TCTP protein is reduced, the chromosomes of Drosophilia are easily broken by radiation. Scale bars = 10 mm.
Figure 3. When gene expressions of TCTP and ATM are reduced, large defects occur in the normal development of the eye. (Left: normal Drosophilia's eye, right: development-deficient eye)
Figure 4. ATM marks the position of the broken DNA, with TCTP helping to facilitate this reaction. DNA (blue line) within the cell nucleus is coiled around the histone protein (green cylinder). When DNA is broken, ATM protein attaches a phosphate group (P). Multiple DNA repair protein recognizes the phosphate as a signal that requires repair and gathers at the site.
2014.01.07 View 19618 -
KAIST Student Awarded Prize from Energy Saving Contest
Jun-Min Kwon, an undergraduate student in the Department of Chemistry at KAIST, was awarded a prize from the Ministry of Trade, Industry and Energy, Republic of Korea, at the 35th Energy Saving Contest which was held on November 20.
The student club he has been leading was also selected as one of the best groups by the Save Energy Save Earth (SESE), a volunteer organization supported by the Korea Energy Management Corporation and the Ministry of Knowledge Economy, Republic of Korea.
Kwon began promoting energy conservation through a blog and participated in related meetings and workshops as a high school student to improve the understanding on the importance of energy saving and recycling.He also received awards from the Second National Assembly Forum on Climate Change, the Korean National Science Fair, as well as the Samsung Human Tech Paper Award.
2013.12.24 View 18759 -
KAIST to establish Ombudsperson system
KAIST has recently undergone a massive reorganization to achieve a streamlined system and highly efficient administration; and it will now implement the new “Ombudsperson” system to hear the opinions of the members of the university.
On September 9th, President Sungmo Kang held a ceremony to appoint Professors Sang-Young Shin and Hong-Gu Shim as the new “Ombudspersons”.
The previous Shinmungo system raised complaints and recommendations for improvements by members of the university, but this is the first time that KAIST has assigned a direct department for handling such matters.
The newly appointed Ombudspersons will review for the possibility of any unjust, irrational systems, violations of research ethics and such. It is their role to take a neutral stance and advise on the correction and improvement.
The merit of the Ombudsperson system is that diverse opinions can be reflected on the policy. The Ombudsperson guarantees the security of the contents of discussion so that anyone can share his or her opinion without fear of being recorded in documents.
It is expected that the Ombudsperson system will protect the interests of the individuals and thus contribute to making a “happy campus”.
President [Sungmo] Kang has said that the reason establishing the office of the Ombudsperson is “In order for KAIST to take a new leap toward the world, it is crucial to bring the minds of the members together…. Even the smallest voices must be heard to present solutions to make the university where everyone’s happy.”
In 1809, the Swedish Parliament appointed the first “Ombudsperson” to investigate and resolve civil complaints. Now, it is widely used in public institutions, corporations and universities to improve the communication and work efficiency of the members.
The new Ombudsmen: Prof. Sang-Young Shin (left) and Prof. Hong-Gu Shim (right)
2013.09.27 View 16153 -
Nanofiber sensor detects diabetes or lung cancer faster and easier
Metal-oxide nanofiber based chemiresistive gas sensors offer greater usability for portable real-time breath tests that can be available on smart phones or tablet PCs in the near future.
Daejeon, Republic of Korea, June 11, 2013 -- Today"s technological innovation enables smartphone users to diagnose serious diseases such as diabetes or lung cancer quickly and effectively by simply breathing into a small gadget, a nanofiber breathing sensor, mounted on the phones.
Il-Doo Kim, Associate Professor of Materials Science and Engineering Department at the Korea Advanced Institute of Science and Technology (KAIST), and his research team have recently published a cover paper entitled "Thin-Wall Assembled SnO2 Fibers Functionalized by Catalytic Pt Nanoparticles and their Superior Exhaled Breath-Sensing Properties for the Diagnosis of Diabetes," in an academic journal, Advanced Functional Materials (May 20th issue), on the development of a highly sensitive exhaled breath sensor by using hierarchical SnO2 fibers that are assembled from wrinkled thin SnO2 nanotubes.
In the paper, the research team presented a morphological evolution of SnO2 fibers, called micro phase-separations, which takes place between polymers and other dissolved solutes when varying the flow rate of an electrospinning solution feed and applying a subsequent heat treatment afterward.
The morphological change results in nanofibers that are shaped like an open cylinder inside which thin-film SnO2 nanotubes are layered and then rolled up. A number of elongated pores ranging from 10 nanometers (nm) to 500 nm in length along the fiber direction were formed on the surface of the SnO2 fibers, allowing exhaled gas molecules to easily permeate the fibers. The inner and outer wall of SnO2 tubes is evenly coated with catalytic platinum (Pt) nanoparticles. According to the research team, highly porous SnO2 fibers, synthesized by eletrospinning at a high flow rate, showed five-fold higher acetone responses than that of the dense SnO2 nanofibers created under a low flow rate. The catalytic Pt coating shortened the fibers" gas response time dramatically as well.
The breath analysis for diabetes is largely based on an acetone breath test because acetone is one of the specific volatile organic compounds (VOC) produced in the human body to signal the onset of particular diseases. In other words, they are biomarkers to predict certain diseases such as acetone for diabetes, toluene for lung cancer, and ammonia for kidney malfunction. Breath analysis for medical evaluation has attracted much attention because it is less intrusive than conventional medical examination, as well as fast and convenient, and environmentally friendly, leaving almost no biohazard wastes.
Various gas-sensing techniques have been adopted to analyze VOCs including gas chromatography-mass spectroscopy (GC-MS), but these techniques are difficult to incorporate into portable real-time gas sensors because the testing equipment is bulky and expensive, and their operation is more complex. Metal-oxide based chemiresistive gas sensors, however, offer greater usability for portable real-time breath sensors.
Il-Doo Kim said, "Catalyst-loaded metal oxide nanofibers synthesized by electrospinning have a great potential for future exhaled breath sensor applications. From our research, we obtained the results that Pt-coated SnO2 fibers are able to identify promptly and accurately acetone or toluene even at very low concentration less than 100 parts per billion (ppb)."
The exhaled acetone level of diabetes patients exceeds 1.8 parts per million (ppm), which is two to six-fold higher than that (0.3-0.9 ppm) of healthy people. Therefore, a highly sensitive detection that responds to acetone below 1 ppm, in the presence of other exhaled gases as well as under the humid environment of human breath, is important for an accurate diagnosis of diabetes. In addition, Professor Kim said, "a trace concentration of toluene (30 ppb) in exhaled breath is regarded to be a distinctive early symptom of lung cancer, which we were able to detect with our prototype breath tester."
The research team has now been developing an array of breathing sensors using various catalysts and a number of semiconducting metal oxide fibers, which will offer patients a real-time easy diagnosis of diseases.
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Youtube Link: http://www.youtube.com/watch?v=t_Hr11dRryg
For further inquires:
Il-Doo Kim, Professor of Materials Science and Engineering, KAIST
Advanced Nanomaterials and Energy Laboratory
Tel: +82-42-350-3329
Email: idkim@kaist.ac.kr
Clockwise from left to right: left upper shows a magnified SEM image of a broken thin-wall assembled SnO2 fiber. Left below is an array of breath sensors (Inset is an actual size of a breath sensor). The right is the cover of Advanced Functional Materials (May 20th issue) in which a research paper on the development of a highly sensitive exhaled breath sensor by using SnO2 fibers is published.
This is the microstructural evolution of SnO2 nanofibers as a function of flow rate during electrospinning.
2013.06.20 View 17432 -
Technology for Non-Breaking Smartphone Display Developed
High-strength plastic display has been developed by applying a glass-fiber fabric.
“Will bring about innovation to the field by replacing glass substrates”
It is now possible to manufacture non-breaking smartphone display. Heavy glass substrates of large-screen televisions will be replaced with light plastic films.
Professor Choon Sup Yoon from KAIST’s Department of Physics and KAIST Institute for Information Technology Convergence has developed the technology for high-strength plastic substrates to replace glass displays.
The plastic substrate created by Professor Yoon and his research team have greatly enhanced needed properties of heat resistance, transparency, flexibility, inner chemical capability, and tensile strength. Although the material retains flexibility as a native advantage of plastic film, its tensile strength is three times greater than that of normal glass, which is a degree similar to tempered glass. In addition, Professor Yoon’s substrate is as colorless and transparent as glass and resists heat up to 450℃, while its thermal expansivity is only 10% to 20% of existing plastics.
Glass substrates are currently used in practically every display such as mobile phone screens, televisions, and computer monitors for having smooth surface and satisfying basic conditions for display substrates. However, as glass substrates are heavy and easily broken, researchers studied colorless and transparent plastic polyimide films to replace glass substrates for their excellent thermal and chemical stability.
Nonetheless, colorless and transparent polyimide films do not have sufficient heat resistance and mechanical solidity. To resolve this problem, polyimide films are impregnated with glass-fiber fabrics, but it was far from commercialization as the impregnation exacerbates the roughness of surface and light transmittance. The roughness of the surface increases as the solvent evaporates in the impregnation process, resulting in surface roughness of around 0.4μm. The downturn in light transmittance is due to light scattering effect by the discording refractive index of polyimide film and glass-fiber fabric.
Professor Yoon’s research team resolved these issues by tuning the refractive indices of transparent polyimide film and glass-fiber fabric up to four decimal places, and by developing the technology of flattening the film’s surface roughness to a few nanometers. As a result, the research team achieved heat expansivity of 11ppm/℃, surface roughness of 0.9nm, tensile strength of 250MPa, bending curvature radius of 2mm, and light transmittance at 90% with a 110μm-thick glass-fiber fabric impregnated transparent polyimide film substrate.
“The developed substrate can not only replace the traditional glass substrate but also be applied as flexible display substrate,” said Professor Yoon in prospect, “it will bring about technological innovation in display industry as it can fundamentally resolve the issue of shattering mobile phone displays, reduce the weight and thickness of large-area televisions, and apply Roll to Roll process in display manufacture.”
Supported by the Ministry of Knowledge Economy for five years, the technology has applied for 3 patents and is in discussion for technology transfer with related business.
Figure 1. The according (left) and discording (right) refractive indices of glass-fiber fabric and polyimide film. The characters on the left are sharp and clear, but the characters on the right appear foggy.
Figure 2. Picture of the developed glass-fiber fabric
2013.06.09 View 11883 -
Professor Soon-Heung Chang meets with Bill Gates and discusses possible collaboration
Professor Soon-Heung Chang from the Department of Nuclear and Quantum Engineering, KAIST, who is also the president of Korea Nuclear Society (KNS), met Bill Gates, the co-founder and former chief executive officer (CEO) of Microsoft, on August 16, 2012 and discussed ways to cooperate for the development of a sodium-cooled fast reactor (SFR), a next generation nuclear power reactor.
According to Professor Chang, Bill Gates was amazed at Korea’s successful bids for nuclear power plants in the United Arab Emirates, even though Korea was a latecomer in the field of nuclear power. Bill Gates also showed a keen interest in Korea’s low electricity rates.
Gates focuses on solving fundamental problems in order to help improve the quality of life for humanity, rather than short-term temporary solutions, through infrastructure development such as energy. Particularly, he considers nuclear power as one of the most effective ways to supply clean energy which can provide electricity at a low cost while keeping carbon dioxide emission levels much lower than fossil fuels.
Bill Gates is a primary investor for an energy company called “TerraPower” based in Bellevue, Washington. TerraPower develops and commercializes nuclear power technology for a traveling wave reactor (TWR) that is designed to use spent fuels, i.e., depleted uranium, and runs technically “forever” because once fueled, the reactor does not need to be refueled for over 50 years. TerraPower’s TWR is to use metallic fuel, and Korea is the only country that currently develops SFR (KALIMER 600) using metallic fuel.
“Korea has an outstanding supply chain for the entire lifecycle of a nuclear power station from equipment manufacturing to operation,” said Professor Chang, while emphasizing the synergistic effects of forming partnership between Korea and TerraPower.
Professor Chang emphasized that Korea should create an opportunity based on lessons learned from the Fukushima crisis and actively move forward to achieve its leading position in the field of next generation nuclear reactors. He said that cooperation with Bill Gates will be a significant step towards the development of next generation nuclear reactors.
About Sodium-cooled Fast Reactor (SFR)
Sodium-cooled Fast Reactor (SFR) is a next-generation nuclear power reactor that will use spent fuels from conventional reactors. Arrangement of a fuel recycling system in
conjunction with currently-developing pyroprocessing technology would enable U-238, which makes up over 99% of natural uranium, to be used as a nuclear fuel. This would greatly reduce the toxicity and volume of spent fuels by up to 1,000 times and 100 times respectively when compared to existing reactors. This is truly a breakthrough innovation in spent fuel disposal and recycling.
2012.09.20 View 14031