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The 2010 International Forum on Electric Vehicle will be held at the Korea Advanced Institute of Science and Technology (KAIST) in Daejeon, South Korea.
Universities, industries, and governments from the world gathered to make an important endeavor for the commercialization of electric vehicles that has emerged as a strong option to replace conventional cars with an internal combustion engine. With the potential benefit of electric cars, in view of environmental protection and less dependence of oil import, they still have limitations for the daily use in customers’ perspective. Electric cars are still very expensive to own with relatively short distance of driving with one charging and with the expensive and bulky nature of the batteries, in addition to the safety concerns with the Lithium batteries. The Korea Advanced Institute of Science and Technology (KAIST) will hold an international forum, at which it hopes to address a wide range of issues related to the development and commercialization of electric vehicles. The 2010 International Forum on Electric Vehicle will be held for three days at KAIST’s campus in Daejeon, South Korea, from June 17th to 19th, 2010. Internationally renowned speakers from Korea and overseas will present their views and conduct a discussion forum on the technology, market, and policy on electric vehicles. The event is open to the public. Major discussions, however, will take place on the second day, Friday, June 18, 2010, which will proceed with two sessions. In the first session, conference participants will discuss the topic of “policies and markets for electric vehicles,” and at the second session, they will take up the issue of “electric vehicle technologies.” Dr. Andrew Brown, president of SAE International and the executive director and chief technologist of Delphi, is scheduled to give a key note speech. The SAE International is a global association of more than 128,000 engineers and related technical experts in the aerospace, automotive, and commercial vehicle industries. Topics to be covered by Dr. Brown during his key note speech are, among other things, elements of market forces for hybrid electric vehicles, electric vehicles, or battery-powered vehicles; clean technologies necessary for sustainable development; pending issues facing the automotive industry to create a substantial share by electric cars and government aids to increase consumers’ buying power for expensive electric cars; technology innovation required for the improvement of batteries and power electronics; development of smart grids; and other key issues that would mature an ever-growing market for electric vehicles. President Nam Pyo Suh of KAIST will also deliver a key note remark on the overall accomplishments of online electric vehicle (OLEV) developed by KAIST. While stressing the OLEV’s technological breakthrough to succeed in the wireless in-motion power transfer through electromagnetic induction, President Suh will review the necessity of developing electric cars as a corresponding measure against climate changes and address the issues of battery weight and lifespan, charging time, and the limited amount of reserved Lithium. Dr. Steven Shladover from the California Partners for Advanced Transit and Highways (California PATH), established in 1986 in collaboration with the University of California in Berkeley and the California Transit, will attend the conference. California PATH is a multi-disciplinary program with universities statewide and cooperative projects with private industry, state and local agencies, and non-profit institutions to find solutions to the problems of California’s surface transportation systems through cutting edge research. California PATH once implemented a bold, innovative research project in the early 1990s in order to overcome the most difficult technical hurdle to reduce the heavy dependence of batteries for electric cars by adopting a non-contact transfer of electric power during vehicles’ movement. Despite the research declared as “unsuccessful” by California PATH, the implications of their innovative approach to solve an important issue inspired many researches subsequently followed—one of them is KAIST’s OLEV project. In addition, the Infineon Technologies AG, a leading semiconductor and system manufacturer based in Germany, which offers solutions for automotive, industrial and multimarket sectors for applications in communication and memory products, will come to the forum and present a paper on its expertise to develop the necessary components for electric vehicles. On the last day of the forum, all participants will have a chance to ride the Online Electric Vehicle (OLEV) at KAIST’s campus. For details of the event, please visit the website of “www.olev.co.kr/en/ifev or refer to the invitation attached herewith. About KAIST’s Online Electric Vehicle: The Online Electric Vehicle (OLEV) developed by KAIST is a dynamic plug-in electric car that receives electricity while running or stopping and thus acquired a complete mobility unlike other type of electric cars, whether hybrid or not. The OLEV reduces the size of a battery to one-fifth of the current battery installed in an electric car. Pure electric cars depend on a large bulky battery that has been a major obstacle to make the cars commercially accessible to the mass market. The OLEV gets charged wirelessly, a distinct difference to other dynamic plug-in electric cars including a tram or trolley, which directly picks up electricity from the road. To explain it further, the OLEV is electrified through power lines buried underground; when flowing low frequency of currents, an electric magnetic field is created around the underground power lines, and the pick-up gadget installed underbody of an electric vehicle converts the field into electricity; and the vehicle then uses electricity either for operation or stores it at a battery to be used for running the road that is not equipped with the power lines. The electric power generated from the underground travels to the surface of the road above 20cm-25cm. KAIST has succeeded to develop a commercial model of OLEV with a safe Electromagnetic Field (EMF), well below the international safeguard of 65mG. The actual model has been up and running at an amusement park in Seoul for the transportation of passengers. The non-contact charging method applied to the OLEV will accelerate the commercialization of electric cars by making a battery affordable and safer for a consumer.
2010.06.25
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President of Israel visited KAIST on June 9, 2010.
President of Israel, Shimon Peres, visited KAIST today on June 9, 2010 to witness the development of science and technology in Korea and explore ways of establishing collaboration and cooperation with industries and universities between Korea and Israel. President Peres led a delegation consisted of the Israeli Mister of Industry, Trade, and Labor, the Minister of Communication, and 60 business leaders from the top companies in the security, infrastructure, communication, high-tech, and water industries. Upon their arrival to the campus, the Israeli delegation was greeted by KAIST’s humanoid robot, “HUBO,” and then moved to its branch campus, IT Convergence Campus, for a ride of Online Electric Vehicle (OLEV) that has been developed by KAIST. The OLEV receives the necessary power through the cable lines buried underground, so it can be provided with a constant and continuous supply of electricity while running or stopping. Between roads and OLEVs is nothing but space. There is no electrical wires intricately crossed underbody of the electric car or above the road. The pick-up equipment installed beneath the body of the electric car collects magnetic fields created around the underground cables, which then converts the filed into electricity. The OLEV’s wireless, non-contact charging system made it possible for a battery currently used for hybrid or pure electric cars on the market to be smaller and cheaper. President Peres expressed a great interest in the technology applied to the OLVE, quoting, “the OLEV system is indeed very impressive.” He talked about efforts being made in Israel with respect to the development of electric cars. The country plans to replace the conventional transportation system with electric cars by constructing a network of battery exchange stations and roadside charge points which allow the cars to be charged whenever they are parked. “Despite the different approach taken by the two nations for the development of electric cars, I believe that transforming the automobile industry from combustion engine to electric system is the right direction we should all follow. Without addressing the current transportation system that heavily dependent on natural resources, we will not be able to promote “green growth on a global scale,” added President Peres. In addition to electric cars, President Peres took up a considerable portion of his time to exchange ideas on how to expand cooperative relations between universities in Korea and Israel, specifically in the area of space, biotechnology, nanotechnology, high-tech, renewable and alternative energy, and the EEWS initiatives that have been implemented by KAIST to find answers to global issues such as climate change and depletion of natural resources. The EEWS stands for energy, environment, water, and sustainability. In response, the president of KAIST pledged to set up a stronger and greater tie with research universities in Israel, particularly called for more collaboration between KAIST and Technion-Israel Institute of Technology. Also, the Israeli delegation had a tour for several Korean research and development centers in Daedeok Innopolis, located in the City of Daejeon, which is the 2nd largest science and research complex in Korea. Shimon Peres, the 9th president of Israel, held many of important government positions in Israel, among other things, Prime Minster and Minister of Defense. He won Nobel Peace Prize in 1994, together with Yitzhak Rabin and Yasser Arafat for the conclusion of a peace agreement, Oslo Accords, between Israel and Palestine Liberation Organization.
2010.06.09
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KAIST held an opening ceremony for the completion of KAIST Institute Building.
A Korean American businessman and his wife, Byiung Jun Park and Chunghi Hong, donated 10 million USD for the construction of the building. KAIST hosted an opening ceremony on May 11, 2010 for the new addition to its campus, called the Chunghi & Byiung Jun (BJ) Park KAIST Institute Building. The KI Building will serve as a hub for creative multidisciplinary researches. A Korean American businessman and his wife made a considerable contribution for the construction of the building, worth 10 million USD. KAIST called the building Byiung Jun (BJ) Park and Chunghi Hong in recognition of their contribution. Chairman Park was the founder of the Merchandise Testing Laboratory, a leading textile quality control multinational. It took 19 months to finish the construction of the KI Building with a total cost of 36 billion Korean won. The building consists of one basement and five ground floors. At the basement, there are clean room and equipment storage room; on the 2nd and 3rd floors, conference and exhibition halls; and on the rest of the floors, research labs and administration offices are to be located. KAIST’s eight integral research institutes will be placed inside the building: the BioCentury; Information Technology Convergence; Design of Complex Systems; Entertainment Engineering; the NanoCentury; Eco-Energy; Urban Space and Systems; and Optical Science and Technology. Approximately 230 professors from 25 departments of various academic fields will make the KI Building home for study and research. The KI Building will play a great role in producing world-class convergence research works by KAIST researchers and professors, thereby making a contribution to the improvement of national competitiveness. Vice President of KI Building, Sang-Soo Kim, said, “There has been no such place for us to concentrate research manpower and equipment scattered around the campus. By having all the necessary resources at one place will allow us to conduct convergence researches more efficiently and effectively. I’d like to express my appreciation for the Ministry of Education and Science and Technology as well as Chairman Byiung Jun (BJ) Park, who gave us tremendous supports in the process of constructing the KI Building.” “The building’s inside has a unique office structure, getting rid of walls or partitions between institutes or departments, to stimulate an environment conducive to convergence researches. We hope to present a new model for creative multidisciplinary researches through a selective and focused approach to be facilitated by institutes at the KI Building,” added by the vice president.
2010.05.20
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A donation to KAIST by a gambler
The Korea Herald ran an editorial on the news that a man who won the biggest-ever jackpot in Korean casino history on Saturday, May 15, 2010, decided to donate the entire prize money to the Korea Advanced Institute of Science and Technology (KAIST). Below is the full text of the editorial published on May 18, 2010. http://www.koreaherald.com/opinion/Detail.jsp?newsMLId=20100518000648 The Korea Herald: [Editorial] Gambler’s donation 2010-05-18 18:09 KAIST, Korea’s leading research university, often makes news with donations from a variety of benefactors who wish to help develop science and technology in Korea with money they earned through their careers. The list of donors, which includes farmers, securities dealers, medical doctors, foreign businesspeople and popular entertainers, now has one unusual entry, a gambler. Ahn Seung-pil, 60, may not be exactly a “gambler” – at least not a professional one. He has visited Kangwon Land, a casino located in the mountain region of Jeongseon, Gangwon Province, only a few times since it opened in 2000 as the only place Korean nationals could gamble. Ahn, who runs a small textile business in Seoul, hit the jackpot of 766 million won (about $665,000), the largest amount ever at Kangwon Land or from any slot machine at a Korean casino. He said he was motivated to donate the money to KAIST in Daejeon City when he watched a television program after returning home, in which a professor emphasized the importance of advancing science and technology in the country. He had incurred heavy debts during the 1997 economic crisis and has yet to clear them all, but he thought of using the prize money for a good cause. The TV program guided him to KAIST, said Ahn, who has “not had a high level of education.” Korea is known worldwide for its people’s strong zeal for university education. Parents do whatever they can to send their children to good universities but are so exhausted before the entrance that they barely pay the tuition once they get there. Universities have to rely mainly on tuition and meager subsidies from foundations or the state treasury. Private donations are rare, compared to European or American universities. Major universities complain that members of the alumni societies are rather indifferent to calls for donation. The majority of donors who give significant amounts are people who weren’t lucky enough to go to university, such as Ahn Seung-pil.
2010.05.19
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Professor Eun-Seong Kim and his research staff observed the phenomena of hysteresis and relaxation dynamics from supersolid Helium
Professor Eun-Seong Kim and his research staff observed the phenomena of hysteresis and relaxation dynamics from supersolid Helium. Their research paper was published in Nature Physics for the issue of April 2010. If we take Helium 4 and cool it down at temperatures below 2.176 Kelivin, liquid helium 4 undergoes a phase transition and becomes superfluid with a zero viscosity. The superfluidity was observed in solid helium through an experiment performed by researchers of Pennsylvania State University in 2004. One of the researchers then was Professor Eun-Seong Kim in the Department of Physics, KAIST. Professor Kim and his research staff, Hyung-Soon Choi, Ph.D., recently published their research results in Nature Physics (April 2010), a highly esteemed journal in the field, on the phenomena of hysteresis and relaxation dynamics observed in supersolid Helium. For the paper, please download the attached .pdf file. Nature Physics link: http://www.nature.com
2010.04.13
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News Article: Naro space rocket getting ready for second launch, April 12, 2010
News Article on KIAST published on April 12, 2010 The Korea Herald, 2010-04-12 17:07 Naro space rocket getting ready for second launch By Bae Hyun-jung (tellme@heraldm.com) The Ministry of Education, Science and Technology is checking on the second launch of Naro, Korea’s first space rocket, as all the necessary parts were transferred to the launch center last week. The Science Technology Satellite No. 2 was transferred last Thursday from the KAIST Satellite Technology Research Center in Daejeon to the Naro Space Center in South Jeolla Province, said ministry officials. The solid-fuel second-stage rocket reached the center last Monday and the liquid-fuel first-stage rocket did so on March 23. The latter was manufactured in Russia’s Khrunichev State Space Science and Production Center. The satellite, a small one weighing 100 kilograms, was co-developed by the Korea Aerospace Research Institute, KAIST SaTReC and the Gwangju Institute of Science and Technology. It is to revolve around the Earth for two years collecting data on climate change by gauging the hydrogen content in the atmosphere, said officials. “With all the crucial parts ready here in the center, we have officially kicked off our final investigation before setting the details of the second Naro launch,” said a ministry official. Second Vice Minister Kim Joong-hyun last week visited the Naro center to attend the overall inspection on all facilities related to the rocket launch. The date has not yet been set for the second launch but will be fixed within this month, said officials. With the general inspection completed on the facilities, the first-stage rocket and the satellite will be assembled and the combination will be joined by the second-stage rocket in May. The first launching attempt ended in failure in August due to faulty electrical wiring or a mechanical problem in the fairing separation mechanism, according to panels. The two fairings -- used to cover and protect the satellite placed on top of the Naro -- failed to separate timely and thus stopped the satellite from gaining sufficient velocity to reach its planned orbit. Korea has so far spent 502.4 billion won ($428.1 million) on the Naro project since it began in August 2002.
2010.04.13
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"The 2010 Artificial Intelligence Robot War Competition" begins to receive applications
[Event Notice] “The 2010 Artificial Intelligence Robot War Competition” begins to receive applications A good opportunity to gauge the intelligence of your robots “The 2010 Artificial Intelligence (AI) Robot War Competition” will be held in October 2010, and the Competition has been receiving applications from contestants since April 1st. The deadline for the application will be May 31st, 2010. Qualified contestants must be a minimum of two, but less than six, team members, and they will compete in one of the two fields: System on Chip (SoC) Taekwon Robot and Humanoid Robot (HURO). Winners will be decided based on the intelligence capabilities presented by a robot’s platform that mimics key functions of the human brain. SoC Taekwon Robot will compete against one another by using a camera installed on its head to recognize visual images, locations, distances, and gestures of the other competing robot. HURO competition is a new entry begun this year, and winners will be determined in accordance with the robot’s ability to perform given missions and fights. Missions are to go through a track installed with obstacles, recognize colors and shapes of barriers, and knock down barriers to earn scores. Fighting will be performed in the form of a Korean martial art, Tae-kwon-do. The Korean government has nominated Robotics as one of the key growth engines to develop IT industry and Korean economy. Robotics converge many of different engineering fields, such as machinery, materials, components, and embedded software. In particular, the SoC is an essential technology for Korea to continuously take lead in the semi-conductor industry in the world, which is an important element for robotics. SoC stands for System on Chip, an integrated chip that assembles various chips and components to be fabricated together on a single chip, instead of building them on a circuit board. The SoC technology has advantages of higher performance, smaller space requirements, lower memory requirements, higher system reliability, and lower consumer costs. An artificial intelligence SoC robot is autonomous because it can adapt itself to changes in various environments and reach a given goal without constantly receiving external orders. For details of the event, please refer to the website of www.socrobotwar.org.
2010.04.06
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New drug targeting method for microbial pathogens developed using in silico cell
A ripple effect is expected on the new antibacterial discovery using “in silico” cells Featured as a journal cover paper of Molecular BioSystems A research team of Distinguished Professor Sang Yup Lee at KAIST recently constructed an in silico cell of a microbial pathogen that is resistant to antibiotics and developed a new drug targeting method that could effectively disrupt the pathogen"s growth using the in silico cell. Hyun Uk Kim, a graduate research assistant at the Department of Chemical and Biomolecular Engineering, KAIST, conducted this study as a part of his thesis research, and the study was featured as a journal cover paper in the February issue of Molecular BioSystems this year, published by The Royal Society of Chemistry based in Europe. It was relatively easy to treat infectious microbes using antibiotics in the past. However, the overdose of antibiotics has caused pathogens to increase their resistance to various antibiotics, and it has become more difficult to cure infectious diseases these days. A representative microbial pathogen is Acinetobacter baumannaii. Originally isolated from soils and water, this microorganism did not have resistance to antibiotics, and hence it was easy to eradicate them if infected. However, within a decade, this miroorganism has transformed into a dreadful super-bacterium resistant to antibiotics and caused many casualties among the U.S. and French soldiers who were injured from the recent Iraqi war and infected with Acinetobacter baumannaii. Professor Lee’s group constructed an in silico cell of this A. baumannii by computationally collecting, integrating, and analyzing the biological information of the bacterium, scattered over various databases and literatures, in order to study this organism"s genomic features and system-wide metabolic characteristics. Furthermore, they employed this in silico cell for integrative approaches, including several network analysis and analysis of essential reactions and metabolites, to predict drug targets that effectively disrupt the pathogen"s growth. Final drug targets are the ones that selectively kill pathogens without harming human body. Here, essential reactions refer to enzymatic reactions required for normal metabolic functioning in organisms, while essential metabolites indicate chemical compounds required in the metabolism for proper functioning, and their removal brings about the effect of simultaneously disrupting their associated enzymes that interact with them. This study attempted to predict highly reliable drug targets by systematically scanning biological components, including metabolic genes, enzymatic reactions, that constitute an in silico cell in a short period of time. This research achievement is highly regarded as it, for the first time, systematically scanned essential metabolites for the effective drug targets using the concept of systems biology, and paved the way for a new antibacterial discovery. This study is also expected to contribute to elucidating the infectious mechanism caused by pathogens. "Although tons of genomic information is poured in at this moment, application research that efficiently converts this preliminary information into actually useful information is still lagged behind. In this regard, this study is meaningful in that medically useful information is generated from the genomic information of Acinetobacter baumannii," says Professor Lee. "In particular, development of this organism"s in silico cell allows generation of new knowledge regarding essential genes and enzymatic reactions under specific conditions," he added. This study was supported by the Korean Systems Biology Project of the Ministry of Education, Science and Technology, and the patent for the development of in silico cells of microbial pathogens and drug targeting methods has been filed. [Picture 1 Cells in silico] [Picture 2 A process of generating drug targets without harming human body while effectively disrupting the growth of a pathogen, after predicting metabolites from in silico cells]
2010.04.05
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New Text Book on Chemistry Published by KAIST Professor and Student
A chemistry textbook written in English and Korean will aid Korean students to learn General Chemistry in a global academic setting. Korean students majoring in chemistry and looking for an opportunity to study abroad will have a new, handy textbook that presents them with a practical introduction to an English speaking lecture on general chemistry. Aiming for advanced Korean high school and college/university students, the inter-language textbook is written by two incumbent professors teaching chemistry at a university in Korea and the US. The book will help Korean students prepare for a classroom where various topics of general chemistry are presented and discussed in English. Clear, collated sections of English and Korean text provide the student with sufficient explanation of the rudimentary topics and concepts. Composed of 15 chapters on the core subjects of General Chemistry, i.e., Stoichiometry and Chemical Reactions, Thermochemistry, Atomic Structure, and Bonding, the textbook includes essential English vocabulary and usage sections for each chapter; it also contains a pre-reading study guide on the subject that prepares the student for listening to a lecture. This section includes view-graph type slides, audio files, and follow-up questions the student can use to prepare for an English-speaking course. The various accompanying audio files are prepared to expose the student to English scientific dialogue and serve as examples for instruction at Korean secondary and tertiary schools. The book was coauthored by Korean and American scientists: A father and son, who have taught chemistry at an American and Korean university, wrote the book. Professor Melvyn R. Churchill at the State University of New York at Buffalo and Professor David G. Churchill at KAIST prepared all of the technical English text which was adapted from General Chemistry course lecture notes; the text was further shaped by original perspectives arising from many student interactions and questions. This English text was translated into Korean by Professor Kwanhee Lee from the Department of Life and Food Science at Handong Global University, who coauthored a previous preparatory book for Korean students in a different subject. He also supplied an important introductory section which serves as a general guide to the classroom student. Kibong Kim, a doctoral student in the Department of Chemistry at KAIST, helped in preparing the book as well. “This has been definitely a collaborative undertaking with an international academic crew and it underscores that the Korean internationalization in science is mainstream. Professors and a Korean student created a new book for Korean consumption and benefit,” Professor David G. Churchill says. ---------------------------------------------------------------------------------------- Bibliography: “How to Prepare for General Chemistry Taught in English” by David George Churchill, Melvyn Rowen Churchill, Kwanhee Lee & Kibong Kim, Darakwon Publishing, Paju, Republic of Korea, 2010, 400 pp, ISBN 978-89-5995-730-9 (1 Audio CD included)
2010.04.02
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Photonic crystals allow the fabrication of miniaturized spectrometers
By Courtesy of Nanowerk Photonic crystals allow the fabrication of miniaturized spectrometers (Nanowerk Spotlight) Spectrometers are used in materials analysis by measuring the absorption of light by a surface or chemical substance. These instruments measure properties of light over a specific portion of the electromagnetic spectrum. In conventional spectrometers, a diffraction grating splits the light source into several beams with different propagation directions according to the wavelength of the light. Thus, to achieve sufficient spatial separation for intensity measurements at a small slit, a long light path – i.e., a large instrument – is required. However, for lab-on-a-chip or microTAS (total analysis system) applications, the spectrometer must be integrated into a sub-centimeter scale device to produce a stand-alone platform. To achieve this, researchers at the Korea Advanced Institute of Science and Technology (KAIST) propose a new paradigm in which the spectrometer is based on an array of photonic crystals with different bandgaps. "Because photonic crystals refelct light of different wavelengths selectively depending on their bandgaps, we can generate reflected light spanning the entire wavelength range for analysis at different spatial positions using patterned photonic crystals," Seung-Man Yang, Director of the National Creative Research Initiative Center for Intergrated Optofluidic Systems and Professor of the Department of Chemical & Biomolecular Engineering at KAIST, tells Nanowerk. "Therefore, when the light source impinges on the patterned photonic crytals, we can construct the spectrum using the reflection intensity profile from the constituent photonic crystals." Photonic crystals – also known as photonic band gap material – are similar to semiconductors, only that the electrons are replaced by photons (i.e. light). By creating periodic structures out of materials with contrast in their dielectric constants, it becomes possible to guide the flow of light through the photonic crystals in a way similar to how electrons are directed through doped regions of semiconductors. The photonic band gap (that forbids propagation of a certain frequency range of light) gives rise to distinct optical phenomena and enables one to control light with amazing facility and produce effects that are impossible with conventional optics. To demonstrate this new concept based on patterned photonic crystals, Yang and his group used non-close-packed colloidal crystals of silica particles dispersed in photocurable resin. Due to the repulsive interparticle potential, monodisperse silica particles spontaneously crystallize into non-close-packed face-centered cubic (fcc) structures at volume fractions above 0.1. Therefore, the particle volume fraction determines both the lattice constant and the bandgap position. a) Optical image of an ETPTA film containing porous photonic crystal stripe patterns with 20 different bandgaps. b) Reflectance spectra from the 20 strips. c) Optical microscope image of the middle region with the parallel stripe pattern (denoted as white-dotted box in a). d) Cross-sectional SEM images of first, sixth, eleventh and seventeenth strips. The scale bars in a, c and d are 1 cm, 2mm and 2 µm, respectively. (reprinted with permission from Wiley-VCH Verlag) Reporting their findings in a recent issue of Advanced Materials ("Integration of Colloidal Photonic Crystals toward Miniaturized Spectrometers"), the KAIST team has demonstrated the integration of colloidal photonic crystals with 20 different bandgaps into freestanding films (prepared by soft lithography), and their application as a spectrometer. Yang explains that the team was able to precisely control the photonic bandgap by varying the particle size and volume fration. "The prepared colloidal composite structures showed high physical rigidity and chemical resistivity" he says. "The composite structure is suitable for spectroscopic use due to the small full widths at half maximum (FWHMs) of the reflectance spectra, which mean that there is little overlap of the reflectance spectra of neighboring photonic crystal strips." "On the other hand" says Yang, "porous photonic crystals showed large FWHMs and high reflectivities, which should prove useful in many practical photonic applications that require high optical performance and physical rigidity as well as simple and inexpensive preparation." In addition to fabricating miniaturized spectrometers, which can for instance be integrated into small lab-on-a-chip devices, these integrated photonic crystals can be potentially used for tunable band reflection mirrors, optical switches, and tunable lasing cavities. Moreover, patterned photonic crystals with RGB colors are well-suited for use in reflection-mode microdisplay devices. Yang points out that, although the spectrometric resolution can be reduced by employing the smaller bandgap interval and photonic bandwidth, there is a limitation. "Now, we are studying photonic crystals with continuous modulation of bandgap position. We expect that the photonic crystals can reduce the resolution to 0.01 nm." By Michael Berger. Copyright 2010 Nanowerk
2010.03.17
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KAIST introduced environmentally friendly public transportation to Seoul Grand Park.
KAIST introduced environmentally friendly public transportation to Seoul Grand Park. First step toward the commercialization of Online Electric Vehicle (OLEV) An online electric vehicle (OLEV) developed by KAIST replaced a trackless combustion-engine train running inside Seoul Grand Park in Gwacheon City, South Korea. On March 9, 2010, Seoul City and KAIST celebrated the completion of OLEV that picks up electricity from power cables buried underground through a non-contact magnetic charging method, called electromagnetic induction. Electromagnetic induction is the process of inducing electric current in a coil with the help of a magnet. The pickup unit installed underneath OLEV collects electricity from a roadway and distributes the power either to operate the vehicle or for battery storage. Whether running or stopped, OLEV constantly receives electric power through the underground cables. As a result, OLEV mitigates the burden of equipping electric automobiles with heavy, bulky batteries—OLEV’s battery size is one-fifth that of the batteries installed in electric vehicles currently on the market. There is no need to establish massive charging stations or to set aside much time for recharging. If the underground power lines installed on road curbs, bus stops, parking lots, and intersections, the power system could support a substantial portion of public transportation: For example, KAIST estimates that by establishing 20% of the road infrastructure for a bus route in Seoul City, the city could offer its citizens the online electric buses. The non-contact charging of vehicles while running, idling, or parking is an important and practical technology necessary for the development of commercialized electric vehicles. This technology solves many of the issues related to the current batteries of electric vehicles, including size, expense, and repair/maintenance. In addition, non-contact charging is safer because it prevents potential electrical hazards, such as electric shock, that result from direct contact with power sources. Furthermore, it is more convenient to drive vehicles without overhead wires directly connected to power lines, as is necessary for streetcars and trams. The recharging strips are divided into several meters of segments in length, and vehicles receive the power each time they pass over one. In other words, a sensor is affixed within each segment. When a car with the pickup equipment drives over the segment, the sensor is turned on for the car to receive electricity. This means that when a car without the pickup equipment passes over the segment, it will not collect any electricity. The power supply via on/off switch (sensors) relieves safety concerns about electromagnetic field (EMF). Pedestrians or cars without the pickup unit will not be exposed to EMF because the sensor embedded in the segments will not work, thus no electricity generated. In addition, even under the circumstance of EMF yield, the test results for OLEV are well below the 1998 the International Commission on Non-Ionizing Radiation Protection (ICNIRP) guideline, 62.5mG at 20khz. OLEV’s EMF test results range from 20mG (inside OLEV while running) to 50mG (around OLEV while parking). When talking about a wireless energy transfer such as electromagnetic induction, the most critical issue is how to reserve an air gap of 12cm (in accordance with Korean law) between the surface of roads and the bottom of vehicles while having 60% power transmission efficiency or above. There was a similar research done in the US at University of Berkley—their research was considered unsuccessful because they obtained an air gap of 5-7cm with 60% maximum level of efficiency. Besides, their electromagnetic field (EMF) was quite high (2000A), and they were unable to bring down the high cost of installing power supply system. By contrast, for the first time in the world, KAIST has succeeded to obtain 12cm (and up to 17cm) of air gap with more than 70% efficiency level of power transmission. The EMF is also well below the international standard of 62.5mG. In a nutshell, KAIST has achieved a core technology in terms of capacity, efficiency, and EMF to develop electric vehicles for commercial use. The city government of Seoul and KAIST signed a Memorandum of Understating (MOU) on the development of an online electric vehicle in August 2009. Against the backdrop of the public’s increased awareness of environmental pollution and the depletion of fossil fuels, the two organizations agreed to introduce eco-friendly vehicles to the city’s public transportation, beginning with the introduction of a trial version of OLEV to places like an amusement park, bus terminal, airport, shopping mall, and the like. KAIST’s OLEV research team is made up of experts from a variety of fields, including electrical and electronics engineering, computer sciences, civil engineering, information technology, and mechanical engineering. OLEV’s success at Seoul Grand Park is a result of KAIST’s innovative initiatives on convergence research, and KAIST has submitted more than 120 applications for patents right in connection with the development of OLEV. Online Electric Vehicle at Seoul Grand Park In terms of power transmission efficiency, KAIST’s research team achieved a maximum pick-up capacity of 62kw/h, 74% with an air gap height of 13cm from a road to the bottom of a vehicle. Composed of one engine and three passenger cars, OLEV travels along a total length of 2.2km beltway. There are four sections of power supply infrastructure established on the route (Sections 1, 2, and 3: 122.5 meters long each, and Section 4: 5 meters long). The power supply cables were laid underground for a total of 372.5 meters, 16% of the total distance of the 2,200 meter route.
2010.03.12
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KAIST Commencement 2010 was held on February 26, 2010.
A total of 2,205 are the newly conferred degree holders: 479 for Ph.D., 988 for Master’s, and 738 for B.S. degrees. Since its foundation in 1971, KAIST has so far produced 38,882 graduates. KAIST held the 2010 graduation ceremony on February 26, 2010 at its newly built place, called “Sports Complex Building.” Approximately 2,500 guests including Minister Byung-Man Ahn, Education, Science and Technology Ministry; Chairman Mun-Sul Jeong, KAIST Board of Trustees; representatives from the KAIST alumni; graduating students; and faculty joined the ceremony to celebrate the commencement. Honorary Doctorates At the ceremony, KAIST has conferred four honorary doctorate degrees in recognition of recipients’ contribution to the advancement of science and technology and development of science and engineering education in Korea and the world. The recipients were Arden L. Bement Jr., Director of US National Science Foundation; Lars Pallesen, President of Technical University of Denmark; Donald C.W. Kim, Chairman of AMKOR A&E, Inc.; and Beang-Ho Kim, Chairman of Seojeon Farm. Graduation Honors: President’s List Dong-Han Kim, majoring in Mathematical Sciences, College of Natural Science, was nominated as President’s List. He received an award for an outstanding academic achievement from the Minister of Education, Science and Technology and gave a gradation speech on behalf of the graduating class. Birthplace of Promising Young Scientists in Korea KAIST has earned a reputation for training the next generation of young scientists in Korea, and its 2010 Commencement has confirmed such fame. Among 479 Ph.D. degree holders, 151 (31%) students are in their 20s. The youngest who has received a doctoral degree is Jin-Ah Lee, graduating from College of Life Science and Bioengineering. Commencing International Students Among international students graduating this year, two students from India received their doctoral degrees in Biological Sciences: Kataru Raghu Prasad and Chaya Mohan. They are a married couple and now both postdoctoral researchers, working at KAIST labs. Wearing academic regalia and standing together to take a picture, the couple said, “We would definitely recommend KAIST to prospective international students because it offers the best education and research facilities comparable to those of any leading universities in the world. With the knowledge and experience acquired from studying at KAIST, we hope to contribute to the development of our country in the future.”
2010.03.04
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