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New LEDs: Large Spectrum of Colors
Professor Yonghun Cho has discovered that LEDs with hexagonal pyramid structures can emit various colors of light.
LEDs, which have been leading the light revolution is a light emitting element that uses the characteristics of semiconductors to emit light upon passing a current, and is being used for lighting, TV, and various signaling devices.
In general, the white LED used for lighting has to be constructed by spraying yellow fluorescent material on a blue LED or by creating a complicated circuit where various LED chips function together.
Prof.Cho’s research team discovered the fact that when a small hexagonal pyramid structure is formed on the semiconductor composing the LED and a current is passed through this, then each side, edge, and point on the pyramid assumes different energies.
Due to the energy differences, lights of bluegreen, yellow, and orange were emitted from the side, edge, and points of the pyramid, respectively. This shows the prospect of displaying white light as well as that of many other colors.
Thus, applying the nanopyramidal structure to LEDs will allow the emission of light with a large spectrum with just the flow of the current, enabling a new type of LED light emitting particles that would display various colors from a single LED chip without the use of a fluorescent material.
Also, originally, LEDs have had limitations to its efficiency because of its structural characteristics where fluorescent materials had to be sprayed on, but the nanopyramidal structures will overcome this structural barrier to create brighter light
2012.01.31 View 7931 -
Bio Pharmaceutical Business Center: Now Open
The Signboard Hanging Ceremony for the Bio Pharmaceutical Business Center for the Integrated Research for the field of Bio Pharmaceutics. 150 representatives from various bio pharmaceutics related businesses and institutes were present for this ceremony.
The Ministry of Education, Science and Technology placed the Molecular Process research team, Personalized Drug Delivery Medium research team, and the newly formed Cancer Cell Detection using Blood research team at the Bio Pharmaceutical Business Center at KAIST.
2012.01.31 View 9172
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2011 International Presidential Forum on Global Research Universities
KAIST’s 4th International Presidential Forum Held in Seoul on November 8, 2011
The largest annual congregation of university presidents in Asia invited leaders from academia, government, and industry for talks on issues related to higher education in the Age of Globalization.
Borderless and Creative Education: the ability to cross borders a crucial key to dominate the information era
Seoul, Republic of Korea, November 8, 2011—The Korea Advanced Institute of Science and Technology (KAIST) hosted the “2011 International Presidential Forum on Global Research Universities (IPFGRU)” on Tuesday, November 8, 2011 at the Millennium Hilton Hotel in Seoul.
With more than 120 participants from 44 institutions in 27 countries present, the full-day forum provided participants with an opportunity to discuss challenges and responsibilities facing higher education in a time of globalization that has resulted from an ever-growing demand for technological innovation.
In his plenary speech, Dr. Robert Birgeneau, Chancellor of UC Berkeley, stressed that “Higher educational intuitions must be prepared to drive innovation and enhance competitiveness by educating a highly trained workforce that will have the critical skills necessary to solve problems and lead in today’s interdependent world.”
“Finding solutions to the world’s most challenging problems will depend on the ability to cross borders: national borders, border between different fields of discipline and research, and borders between academe, government, and industry,” said Chancellor Birgeneau to address the importance of “borderless and creative education,” the theme of the forum.
Other major keynote speakers were Jörg Steinbach, President of Technische Universität Berlin, Lars Pallesen, President of Technical University of Denmark, Paul F. Greenfield, President of University of Queensland, Marcelo Fernandes de Aquino, President of the University of the Sinos Valley (UNISINOS), and Eden Woon, Vice President of the Hong Kong University of Science and Technology.
Dr. Nam-Pyo Suh, President of KAIST, gave talks on the university’s new education plan, “The I-Four Education,” at the afternoon session. The four Is are information technology (IT), independent learning, integrated knowledge acquisitions, and an international learning environment.
“In this format, there are no formal lectures,” President Suh explained. “A group of students learn together by using the materials available on the internet, doing homework and conducting experiments together. Pre-recorded lectures are delivered in English by I-Four professors, some of them regular KAIST professors and some professors in other countries who participate in the I-Four Program as consulting professors.”
He added, “The overall purpose of the I-Four Education Program is to encourage students to learn independently, gain exposure to the best lectures by the most eminent professors in the world, accelerate the development of a global frame of reference in the students by dealing with information available throughout the world, and provide an integrated learning environment by using diverse examples from many disciplines to achieve understanding of basic principles.”
The 2011 IPFGRU, the fourth forum since its inception in 2008, rose to prominence in the past years as an international network for leaders of research universities from around the world to share information and exchange views about contemporary issues in higher education.
At this year’s forum, entitled “Borderless and Creative Education,” speakers took a deeper look into the transitions and transformations many research universities are undergoing today, delving into the following topics: the development of e-learning and cyber campuses; increased student mobility and international collaborations; multi-disciplinary and convergence approaches in research and education; and methodology of nurturing future global leaders.
Participants also discussed experiences and accomplishments earned from their own endeavors to accommodate such changes and presented ways to strengthen internationalization and improve the academic and research competitiveness of universities.
The 2011 International Presidential Forum on Global Research Universities (IPFGRU) was organized by KAIST and sponsored by the Ministry of Education, Science and Technology, POSCO, Hyundai Motor Company, Samsung Heavy Industries, S-Oil, and Elsevier Korea.
2011.11.09 View 13627 -
Fusion performing arts, called space musical, 'NARO' performed at KAIST
In commemoration of the 6th anniversary of the establishment of the Graduate School of Cultural Technology, KAIST organized an English musical show on space at the Auditorium on the 29th and 30th of September. The name of the musical was NARO.
The musical was funded by the ‘NaDa Center’ operated by KAIST’s Graduate School of Cultural Technology. The musical was created with participation from adolescents, which told a tale about a genius boy Naro’s journey in space.
The musical was composed of two parts, and the basic storyline was about Naro who conducts research based on space, and his friends went on a time travel to the constellation Scorpios; more specifically, it was a Korean traditional children’s story about a brother and sister who became the sun and the moon. Naro and his friends prevent the plot of Tyran, a villan, who plans on destroying the space and Earth by inducing a red giant star, Antares.
In preparation for the musical, NaDa Center selected 14 students ranging from elementary to high school students during March of 2011. The selected students met every Saturday and Sunday from March to September for practice; a gargantuan commitment.
The theme of the musical is space, the future, and hope, and it does not utilize any stage settings. Instead, it attempts the incorporation of high technology into the stage by using interactive video, laser art, and specially built props. In addition, the entire process from script to performance and advertisement was utilized as an education model to suggest a good fusion between science and technology and cultural arts.
The musical ‘NARO’ is a collective effort. Professor Won Kwan Yeon who pioneered the field of Cultural Technology directed the musical, Professor Koo Bon Chul was in charge of the script and music composition, acting was charged to Lee Min Ho, choreography was charged to Han Eun Kyung, astrological reference was charged to Park Seok Jae among other students in the Graduate School of Cultural Technology. Members of the KAIST Acting Club ‘Lee Bak Teo’, Jeong Soo Han, Son Sharon and graduate of Chung Nam National University with vocal music major Yang Su Ji also made appearances. The Space Musical ‘NARO’ was funded by the Korea Astronomy and Space Science Institute, Korea Aerospace Research Institute, and LG School of Multi Culture.
2011.10.10 View 10947 -
Professor Son Hoon received "Structural Health Monitoring Person of the Year Award."
Professor Son Hoon (42) of the Department of Civil and Environmental Engineering received the “Structural Health Monitoring Person of the Year Award” at an international workshop on structural health monitoring held in Stanford University.
The award is given by the editor and advisors of prestigious international magazine, “Journal of Structural Health Monitoring,” to a researcher with the best research record in a year. Professor Son has published 42 SCI level dissertations, registered 17 patents both domestically and internationally, and presented over 100 papers in international journals, for which he was recognized with the award. Professor Son is the first Korean who receives this award.
One of the most significant achievements by Professor Son was “reference-free damage diagnosis” that he had developed in 2007. The diagnosis allows for the detection of wear and tear of a structure without having to use the foundation signal from the initial stages of the structure. The diagnosis contributed greatly in increasing the reliability of the signal information received from smart sensors attached to the structure by eliminating the environmental impact like temperature.
Professor Son is currently working on green energy structural health monitoring system development related projects. His current work deals with airplanes, bridges, nuclear facilities, high speed railways, wind turbines, and etc. in cooperation with Boeing, United States Air Force Research Institute, Korea Research Foundation, Ministry of Defense Research Institute, Korea Expressway Corporation, POSCO, and etc.
In addition, Professor Son successfully adopted a local monitoring method using smart piezoelectric sensors on a bridge in New Jersey as part of the Long Term Bridge Performance Program initiated by the National Highway Bureau. The success was even introduced in New Jersey’s public TV and newspaper agencies.
Professor Son was given tenure at a record age of 39 in 2008 and received numerous awards given out by the Ministry of Education and Science and international organizations like the ‘Edward M Curtis’ Professor Award from Purdue University.
2011.10.10 View 11113 -
KAIST's efforts begin to become the first Korean university establishing a "strategic technology management system."
KAIST completed the signing of business agreement with the Korea Strategic Trade Institute to establish a strategic technology management system on the 22nd of September.
The agreement between KAIST and Korea Strategic Trade Institute (under the Ministry of Knowledge Economy) encompasses 1) the establishment of processes for strategic technology management on campus, 2) development and accommodation of management system on par with major countries, and 3) protection and management through continued education and promotion.
Strategic technology management is necessary to prevent the illegal distribution of technologies developed in Korea to those countries and organizations of concern. The need for the management system arose due to the fact that technology transfer has become venerable to illegal export of strategic technologies.
The agreement between the two parties offer protection to KAIST when exporting strategic technologies as it necessitates the permission of the government prior to the technology transfer.
2011.09.27 View 8552 -
Bicycle Sharing System "Ta-Shu" Arrives at KAIST.
KAIST has begun providing a bike rental service, called “Ta-Shu,” to its students. This bicycle sharing system, implemented in tandem with the local city government, has been in service since the 7th of September and will allow KAIST students to rent bicycles for travel within campus and even to other parts of the city, Daejeon.
The ‘University Pubic-Bicycle Rental System’ is a program in which numbers of bicycles are made available for shared use by students. Initiated by the Ministry of Public Administration and Security, the university expects that more students will use bicycles as part of their daily mobility means through this system.
2011.09.22 View 8552 -
Review of organophosphonate nerve agent remediation and sensing chemistry
Professor David Churchill, Dept. of Chemistry, KAIST
Scientists in Daejeon, South Korea and Lexington, Kentucky (USA) have recently published a review on the subject of nerve agent remediation and probing chemistry (Chemical Reviews, DOI:10.1021/cr100193y). This article endeavored to pursue organophosphonate nerve agent chemistry deeply and comprehensively and to reflect that decontamination / sensing and nerve agents / pesticides are quite inextricable: when one tries to degrade nerve agents one also needs to detect what components are still present “downstream,” etc. Nerve agents and many pesticides also share a common generalized organophosphate / -phosphonate structure.
Also, the use of simulant molecules (mimics) and a consideration of the closely related organophosphonate pesticides were also treated comprehensively in the Review. The authors reached back into the literature when developing some sections to make important connections to the contemporary topics of interest. The review also includes industrial insights.
Kibong Kim, Olga G. Tsay and David G. Churchill of the Department of Chemistry at KAIST and David A. Atwood of the Department of Chemistry of the University of Kentucky endeavored to "make a variety of connections in research strategies and (sub-) fields to present what is still possible, fruitful, practical, and necessary and to facilitate a current comprehensive molecular level understanding of organophosphonate degradation and sensing," Churchill says.
The authors feel that for the time being, researchers in varying research areas “can use this manuscript effectively when considering future research directions.”
2011.09.19 View 9264 -
KAIST Online Electirc Vehicle Introduced by CNN
CNN aired KAIST’s Online Electric Vehicle (OLEV) on August 29, 2011 in its program called “Eco Solutions” that reports on meeting people with innovative solutions to preserve the planet. The reporter went to Seoul Grand Park, an amusement park and introduced an online electric tram developed by KAIST and operated on a daily basis for park visitors since July 29, 2011. KAIST has designed different types of OLEVs including bus, SUV, and tram. The reporter said that “the online electric tram” at the park provides visitors with a “cleaner, greener, and convenience since it charges as you go.” Currently, three OLEVs are running inside the park, and KAIST plans to replace the rest of existing diesel trams with OLEVs in the near future.
CNN Link: http://edition.cnn.com/CNNI/Programs/eco.solutions/index.html
Youtube Link: http://www.youtube.com/watch?v=QLzmFFqPJfo
2011.09.09 View 10976 -
Future of Petrochemical Industry: The Age of Bio-Refineries
The concept of bio-refinery is based on using biomass from seaweeds and non-edible plant sources to produce various materials.
Bio-refineries has been looked into with increasing interest in modern times due to the advent of global warming (and the subsequent changes in the atmosphere) and the exhaustion of natural resources.
However past 20 years of research in metabolic engineering had a crucial limitation; the need to improve the efficiency of the microorganisms that actually go about converting biomass into biochemical materials.
In order to compensate for the inefficiency, Professor Lee Sang Yeop combined systems biology, composite biology, evolutionary engineering to form ‘systems metabolic engineering’.
This allows combining various data to explain the organism’s state in a multi-dimensional scope and respond accordingly by controlling the metabolism.
The result of the experiment is set as the cover dissertation of ‘Trends in Biotechnology’ magazine’s August edition.
2011.07.28 View 11961
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Wireless electric trams at Seoul Amusement Park begin full operations.
Photo by Hyung-Joon Jun
IMMEDIATE RELEASE
Wireless electric trams at Seoul Amusement Park begin full operations.
KAIST’s On-Line Electric Vehicle (OLEV) becomes an icon of green technology, particularly for young students who aspire to transform their nation into the “vanguard of sustainability.”
Seoul, South Korea, July 19, 2011—As young students wrap up their school work before summer vacation in late July, Seoul Grand Park, an amusement park located south of Seoul, is busily preparing to accommodate throngs of summer visitors. Among the park’s routine preparations, however, there is something new to introduce to guests this summer: three wireless electric trams have replaced the old diesel-powered carts used by passengers for transportation within the park.
The Korea Advanced Institute of Science and Technology (KAIST) and the city of Seoul held a ceremony this morning, July 19, 2011, to celebrate their joint efforts to adopt a green public transportation system and presented park visitors with the three On-Line Electric Vehicles (OLEVs), which will be operated immediately thereafter. Approximately one hundred people, including science high school students across the nation, attended the ceremony and had a chance to ride the trams.
KAIST unveiled the prototype of an electric tram to the public in March 2010, and since then it has developed three commercial trams. The Korean government and the institute have worked on legal issues to embark on the full-scale commercialization of OLEV, and the long awaited approval from the government on such issues as standardization of the OLEV technology and road infrastructure, regulation of electromagnetic fields and electricity safety, and license and permits for vehicle eligibility, finally came through.
The On-Line Electric Vehicle (OLEV) is no ordinary electric car in that it is remotely charged via electromagnetic fields created by electric cables buried beneath the road. Unlike other currently available electric cars, OLEV can travel unlimited distances without having to stop to recharge. OLEV also has a small battery onboard, which enables the vehicle to travel on roads that are not equipped with underground power cables. This battery, however, is only one-fifth of the size of a conventional electric vehicle battery, resulting in considerable savings in the cost, size, and weight of the vehicle.
The OLEV project was initiated in 2009 as a method of resolving the battery problems of electric cars in a creative and disruptive way. KAIST came up with the idea of supplying electricity directly to the cars instead of depending solely on the onboard battery for power. Since then, the university has developed core technologies related to OLEV such as the “Shaped Magnetic Field in Resonance (SMFIR),” which enables an electric car to collect the magnetic fields and convert them into electricity, and the “Segment Technology,” which controls the flow of electromagnetic waves through an automatic power-on/shut-down system, thereby eliminating accidental exposure of the electromagnetic waves to pedestrians or non-OLEV cars.
According to KAIST, three types of OLEV have been developed thus far: electric buses, trams, and sport utility vehicles (SUVs). The technical specifications of the most recently developed OLEV (an electric bus), the OLEV research team at the university said, are as follows:
· Power cables are buried 15cm beneath the road surface.
· On average, over 80% power transmission efficiency is achieved.
· The distance gap between the road surface and the underbody of the vehicle is 20cm.
· The OLEV bus has a maximum electricity pickup capacity of 100kW.
· The OLEV bus complies with international standards for electromagnetic fields (below 24.1 mG).
The eco-friendly electric trams at Seoul Grand Park consume no fossil fuels and do not require any overhead wires or cables. Out of the total circular driving route (2.2km), only 16% of the road, 372.5m, has the embedded power lines, indicating that OLEV does not require extensive reconstruction of the road infrastructure. The city government of Seoul signed a memorandum of understanding with KAIST in 2009 as part of its initiatives to curtail emissions from public transportation and provide cleaner air to its citizens. Both parties plan to expand such collaboration to other transportation systems including buses in the future.
KAIST expects the OLEV technology to be applied in industries ranging from transportation to electronics, aviation, maritime transportation, robotics, and leisure. There are several ongoing international collaborative projects to utilize the OLEV technology for a variety of transportation needs, such as inner city commute systems (bus and trolley) and airport shuttle buses, in nations including Malaysia, US, Germany, and Denmark.
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More information about KAIST’s On-Line Electric Vehicle can be found at http://olev.co.kr/en/index.php. For any inquiries, please contact Lan Yoon at 82-42-350-2295 (cell: 82-10-2539-4303) or by email at hlyoon@kaist.ac.kr.
2011.07.22 View 15731 -
Scientists develop highly efficient industrial catalyst
http://english.yonhapnews.co.kr/business/2011/07/14/48/0501000000AEN20110714009600320F.HTML
SEOUL, July 15 (Yonhap) -- South Korean scientists said Friday that they have developed a highly efficient nanoporous industrial catalyst that can have a considerable impact on chemical and oil-refining sectors.
The team of scientists led by Ryoo Ryong, a chemistry professor at the Korea Advanced Institute of Science and Technology (KAIST), said the solid zeolite compound developed in the laboratory has a reaction speed five to 10 times faster than that of conventional materials.
Zeolite, which is made from silica and aluminium, is frequently used as an absorbent, water purifier and in nuclear reprocessing, although it is mainly employed in the chemical industry.
The annual size of the zeolite market is estimated at US$2.5 billion with output using the material topping $30 billion. At present, 41 percent of all catalysts used in the chemical sector are nano-scale zeolite materials.
The KAIST team said that because the new zeolite is made up of different sized pores, the material can be used as a catalyst when existing materials are unable to act as a changing agent.
"Existing zeolites only have pores under 1 nanometer in diameter, but the new material has holes that range from 1 nanometer to 3.5 nanometers, which are all arranged in a regular honeycomb arrangement," Ryoo said. A nanometer is one-billionth of a meter.
He said the ability to have both micro- and meso-sized pores is key to the faster reaction speed that is an integral part of raising efficiency. The South Korean researchers used a so-called surfactant process to make the different sizes of pores.
The development is a breakthrough because researchers and companies such as Exxon Mobil Corp. have been trying to build zeolite with different sizes of pores for the past two decades without making serious headway. There are more than 200 different types of zeolites in the world.
Ryoo, who received funding from the government, has requested intellectual property rights for the discovery, which has been published in the latest issue of Science magazine. He also developed another zeolite in the past that can transform methanol to gasoline up to 10 times more efficiently than existing catalysts.
Exxon Mobil has expressed interest in the two zeolites made by Ryoo"s team. Undisclosed South Korean petrochemical companies have also made inquiries that may lead to commercial development in the future.
"There are some technical issues to resolve, mainly related with mass production and stability," the scientist said.
He said full-fledge production will be determined by how much companies are willing to spend on research to speed up development that can bring down overall production costs.
The KAIST team said it took two years to make the new zeolite, which can be custom made to meet specific needs.
(END)
2011.07.15 View 12602