Ministry+of+Knowledge+Economy
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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 10845 -
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 8494 -
KAIST, ICU Agree to Merge
KAIST and the Information and Communications University, a state-run institution, decided to merge as they signed a memorandum of understanding for unification at the Westin Chosun Hotel in Seoul on May 23.
The MOU signing ceremony was attended by representatives of the two universities and related high-ranking government officials from the Ministry of Knowledge Economy and the Ministry of Education, Science and Technology.
Under the agreement, the two universities will form a joint committee to complete the merger process by the end of this year. According to the MOU, ICU will become the "IT Convergence Campus" (ICC) which will include KAIST"s IT related departments and research institutes. The projected ICC will be headed by a KAIST vice president, KAIST authorities said.
With the merger, the number of KAIST students in the IT area will increase to 2,850 from 1,951, while the number of IT-related faculty members will rise to 157 from 99.
ICU was established in 1997 by the Korean Ministry of Information and Communication, the Electronics and Telecommunications Research Institute, and some major Korean IT companies. Located in Daedeok Science Town in Daejeon where KAIST is also situated, ICU started as a graduate school and added the undergraduate course in 2002. It currently has a total enrollment of 1,121 students -- 481undergraduate students, 324 graduate students and 316 doctorate students.
KAIST said that it will treat ICU professors and staff equally after the merger. This year, the two universities will separately conduct freshmen recruitment procedures for 2009, but will then unify recruitment.
The unification of the two institutions is expected to give KAIST the competitive edge through a larger faculty, student body, and expanded facilities.
The agreement put an end to extended negotiations for merger which started in July 2006. The talk of merging the two universities surfaced when the Board of Audit and Inspection concluded that the government"s direct financial support for ICU was unlawful as ICU was established as a private school. When ICU was established in 1997, the Ministry of Information and Communication provided 200 billion won as the basic endowment and has continually provided 10 billion won in operating funds each year.
2008.05.22 View 13398