Engineering
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Professor Jin-Hyung Kim appointed as the founding director of the Software Policy Research Center
Professor Jin-Hyung Kim from the Department of Computer Science at KAIST was appointed as the founding director of the newly established research institute, the Software Policy Research Center. He will serve as director for three years. The research center will undertake studies and analysis on software policy, statistics, and new software technology.
2014.01.05 View 8775 -
Professor Dong-Yol Yang received an award for scholar of the year 2013 from the Korean mechanical engineering community
Professor Dong-Yol Yang from the Department of Mechanical Engineering at KAIST was selected as “the scholar of the year 2013” at an annual event held by the Korean Federation of Mechanical Engineering Societies, the Korea Association of Machinery Industry, and other mechanical engineering research institutes in Korea. The event, the Day of the Machines, is the nation’s biggest gathering for engineers, scholars, and researchers in mechanical engineering, at which winners of the awards for the person of the year in academia, business, and engineering are announced.
Professor Yang was chosen for his lifetime achievement as a scholar in the field of three-dimensional shape precision processing by developing an innovative processing technology that contributes to the advancement of mechanical engineering and industry. He also introduced the three-dimensional fast processing to Korea from 1990 and developed world-class subminiature fast processing, the first of its kind in Korea.In 2013, Professor Yang identified geometric deformation elements in mechanical engineering for the first time in the world, an essential component for nano mobile system and received the best conference paper award at the 3M-Nano International Conference.
2014.01.05 View 9807 -
Professor Dong-Soo Han received the Prime Minister's award for creative economy in 2013
The 2013 Korea Creative Economy Awards, presented to companies or individuals that contributed to the implementation of the Korean government’s economic growth initiative called “creative economy” with the development of new technology, was held on December 12th at the InterContinental Seoul Coex. Professor Dong-Soo Han from the Department of Computer Science at KAIST received the Prime Minister’s award.
Professor Han was recognized for his research accomplishments on the development of an indoor GPS system and an integrated indoor/outdoor navigation system, as well as for his publication of a book for beginners who are interested in patents. He has applied 50 patents and registered 30 patents in Korea and abroad for the indoor positioning technology and smartphone application services.
His research work was also introduced to the public at the exhibition held after the award ceremony during December 12th-15th at the Coex convention center in Seoul.
2014.01.05 View 8435 -
Professor Kwy-Ro Lee Appointed Distinguished Member of IEEE
Professor Kwy-Ro Lee from the Department of Electrical Engineering at KAIST was selected as a distinguished member of the Institute of Electrical and Electronics Engineers (IEEE) where his contribution to research development of the technological management of semiconductors was recognized.
Professor Lee earned his BS from Seoul National University and MS & Ph.D. from the University of Minnesota. He has been working as a professor in the Department of Electrical Engineering since 1986. He has also served as the president of the LG Electronics Research Center in 2005 and the president of the Nanoscience and Technology Center at KAIST in 2010.
IEEE is the largest professional association for the advancement of technology in electrical, electronics, computing and communication with 400,000 members in 160 countries. Only 0.1 percent of members with over ten years of service can be selected as distinguished members based on their research devotion for society.
2014.01.02 View 8542 -
Professor Suk-Joo Na Invited to Finland as Distinguished Professor
Professor Suk-Joo Na, from the Department of Mechanical Engineering at KAIST, has been invited as a distinguished professor for an international research project in Finland.
As a leading scientist in the field of arc welding and numerical analysis of the laser welding process, Na will assemble a research group for the interpretation of the welding processes for three years at the VVT Technical Research Centre of Finland beginning in January of 2014.
The project was established to improve the research level and national competitiveness of Finland by inviting leading international scientists to the National Technology Agency of Finland and Academy of Finland since 2006 and over one hundred projects have been carried out thus far. A total of 17 billion won will be invested for the eleven new projects selected this year. Professor Na said, “The fusion welding field contains important technology for improving the competitiveness of mechanical products of Finland. Improvements in productivity, the life cycles of products, and energy saving through interpretation technology for the numerical analysis of the welding process will make a huge impact on the national economy of Finland.”
2013.12.24 View 10004 -
Rechargeable Lithium Sulfur Battery for Greater Battery Capacity
Professor Do Kyung Kim from the Department of Material Science and Engineering and Professor Jang Wook Choi from the Graduate School of EEWS have been featured in the lead story of the renowned nanoscience journal Advanced Materials for their research on the lithium sulfur battery. This new type of battery developed by Professor Kim is expected to have a longer life battery life and [higher] energy density than currently commercial batteries.
With ample energy density up to 2100Wh/kg—almost 5.4 times that of lithium ion batteries—lithium sulfur batteries can withstand the sharp decrease in energy capacity resulting from charging and discharging—which has been considered the inherent limitation of the conventional batteries.
Professor Kim and his research team used one-dimensional, vertical alignment of 75nm tick, 15μm long sulfur nanowires to maximize electric conductivity. Then, to prevent loss of battery life, they carbon-coated each nanowire and prohibited direct contact between the sulfur and electrolyte.
The result was one of the most powerful batteries in terms of both energy performance and density. Compared to conventional batteries which suffer from continuous decrease in energy capacity after being discharged, the lithium sulfur battery maintained 99.2% of its initial capacity after being charged and discharged 300 times and up to 70% even after 1000 times.
Professor Kim claims that his new battery is an important step forward towards a high-performance rechargeable battery which is a vital technology for unmanned vehicles, electric automobiles and energy storage. He hopes that his research can solve the problems of battery-capacity loss and contribute to South Korea’s leading position in battery technology. Professor Kim’s research team has filed applications for one domestic and international patent for their research.
2013.12.11 View 13059 -
Graduate Student at KAIST Awarded Best Prize at the 9th Inside Edge
Sun-Jin Choi, a Ph. D. candidate in the Department of Materials Science and Engineering at KAIST, under the guidance of Professor Il-Doo Kim, won the best prize at the 9th Inside Edge Contest hosted by Samsung Electro-Mechanics.
Choi was awarded prize money totaling fifteen million won at the award ceremony held on November 22 at the Mirae Hall at the headquarters of Samsung Electro-Mechanics in Suwon.
Choi’s research, titled “Exhaled Breath Sensor Arrays for the Non-invasive and Real-time Diagnosis of Diabetes by Detection of Acetone,” was recognized for its creativity and uniqueness.The Inside Edge is an international thesis competition which was started in 2005 to encourage and support creative research and potential technological development among young scientists and engineers.
Sun-Jin Choi (left) and Professor Il-Doo Kim (right).
2013.12.11 View 10089 -
Wearable computer follows suit of smart phones
KAIST hosts “Wearable Computer Competition” in KI Building, Daejeon Campus, on the 7th-8th of November
“Computer that controls smart phones with the movement of facial muscles” and 12 other wearable computers to be presented
As technology transitions to “Wearable Computers,” KAIST is hosting its 9th “Wearable Computer Competition.” The competition will take place over two days, 7th-8th of November, in KI building, on the main Daejeon Campus.
The “wearable computer” is designed to enable users to use the computer whilst moving by limiting its weight and size so that it can be worn as a part of the body and clothing. Wearable computers have been considered the future of information technology (IT) ever since smart phones and other miniaturized IT devices made an appearance.
The “Wearable Computer Competition” has been held since 2005 under the leadership of Professor Hoi-Jun Yoo from the KAIST Department of Electrical Engineering. It is the only competition in the nation where undergraduate students use their unique ideas and newest technology to produce computers that seem to be existed only in sci-fi movies and comic books.
A total of 15 teams out of 70 made the competition and went through a rigorous selection process based on written applications and interviews to enter the final. The teams at the final received USD 1,400 and IT devices including smart phones to produce a wearable computer.
KAIST increased the number of finalists from the last year"s 10 to 15 this year as the wearable computer industry is extending, and there is growing interest in the computer around the world after the launch of Google Glass and Samsung Galaxy Gear.
This year’s entries included a product for quadriplegic patients to control smart phones with the movement of facial muscles, which attracted public interest. The product in the form of a headband can be worn by quadriplegic patients or someone with limited hand movement. The user can activate the product by clenching their molars and move the mouse on the smart phones with the movement of muscles in their face.
Furthermore, a wearable band shaped device that can control smart phones with simple hand movements is also attracting interest. Broad hand movements of the user allows him/her to receive calls and take photos, and handshakes between users control sharing of files. Body communication can be used to protect private information without a password or locking the device.
In addition, gloves and shoes that can sense the user’s movement to play an instrument without the instrument being present; a cane for the blind that converts visual information to tactile; a belt that protects children from sexual crimes; and a game where the user can be Super Mario to play and other practical products are presented.
The chairman of the competition, Professor Yoo said, “As you can see from the launch of Samsung Galaxy Gear, wearable computers will follow smart phones as the leader of IT devices in the next generation.” He continued, “This competition and workshop is an opportunity to increase public interest in wearable computers and serves as a communication platform for experts to view the present and the future of wearable computers.”
The “Wearable Computer Workshop” will be held this year as well. The workshop under the theme of “the present and the future of wearable computers” invited Professor Kyu-Ho Park, Vice President of KAIST, as a keynote speaker to talk on “ubiquitous, fashionable computers.” Moreover, Samsung’s Dong-Jun Geum and the Electronics and Telecommunications Research Institute’s Hyeon-Tae Jeong will lecture on the “trend and direction of progress of wearable devices” and the “technological trend and prospect of industry of wearable computers,” respectively.
To participate in the competition or the workshop, please visit the website (http://www.ufcom.org)
for further information.
2013.11.28 View 10573 -
The key to Alzheimer disease, PET-MRI made in Korea
Professor Kyu-Sung Cho
- Simultaneous PET-MRI imaging system commercialization technology developed purely from domestic technology - - Inspiring achievement by KAIST, National NanoFab Center, Sogang University, Seoul National University Hospital –
Hopes are high for the potential of producing domestic products in the field of state-of-the-art medical imaging equipment that used to rely on imported products.
The joint research team (KAIST, Sogang University and Seoul National University) with KAIST Department of Nuclear and Quantum Engineering Professor Kyu-Sung Cho in charge, together with National Nanofab Institution (NNFC; Director Jae-Young Lee), has developed PET-MRI simultaneous imaging system with domestic technology only. The team successfully acquired brain images of 3 volunteers with the newly developed system.
PET-MRI is integrated state-of-the-art medical imaging equipment that combines the advantages of Magnetic Resonance Imaging (MRI) that shows anatomical images of the body and Position Emission Tomography (PET) that analyses cell activity and metabolism. Since the anatomical information and functional information can be seen simultaneously, the device can be used to diagnose early onset Alzheimer’s disease and is essential in biological science research, such as new medicine development.
The existing equipment used to take MRI and PET images separately due to the strong magnetic field generated by MRI and combine the images. Hence, it was time consuming and error-prone due to patient’s movement. There was a need to develop PET that functions within a magnetic field to create a simultaneous imaging system.
The newly developed integral PET-MRI has 3 technical characteristics: 1. PET detector without magnetic interference, 2. PET-MRI integration system, 3.PET-MRI imaging processing.
The PET detector is the most important factor and accounts for half the cost of the whole system. KAIST Professor Cho and NNFC Doctor Woo-Suk Seol’s team successfully developed the Silicon Photomultiplier (amplifies light coming into the radiation detector) that can be used in strong magnetic fields. The developed sensor has a global competitive edge since it optimises semiconductor processing to yield over 95% productivity and around 10% gamma radiation energy resolving power.
Sogang University Department and Electrical Engineering Professor Yong Choi developed cutting edge PET system using a new concept of electric charge signal transmission method and imaging location distinction circuit. The creativity and excellence of the research findings were recognised and hence published on the cover of Medical Physics in June.
Seoul National University Hospital Department of Nuclear Medicine Professor Jae-Sung Lee developed the Silicon Photomultiplier sensor based PET imaging reconstitution programme, MRI imaging based PET imaging revision technology and PET-MRI imaging integration software.
Furthermore, KAIST Department of Electrical Engineering Professor Hyun-Wook Park was responsible for the development of RF Shielding technology that enables simultaneous installation of PET and MRI and using this technology, he developed a head coil for the brain that can be connected to PET for installation.
Based on the technology describe above, the joint research team successfully developed PET-MRI system for brains and acquired PET-MRI integrated brain images from 3 volunteers last June.
In particular, this system has the distinct feature of a detachable PET module and MRI head coil to the existing whole body MRI, so that PET-MRI simultaneous imaging is possible with low installation cost.
Professor Cho said, “We have prepared the foundation of domestic commercial PET and the system has a competitive edge in the global market of PET-MRI system technology.” He continued, “It can reduce the cost of the increasing brain related disease diagnosis, including Alzheimer’s, dramatically.”
Funded by Ministry of Trade, Industry and Energy as an Industrial Foundation Technology Development Project (98 billion won in 7 years), the research applied for over 20 patents and 20 CSI theses.
Figure 1.Brain phantom images from developed PET-MRI system
Figure 2. Brain images from developed PET-MRI system
Figure 3. Domestic PET-MRI clinical trial
Figure 4. Head RF coil and PET detector inserted in MRI
Figure 5. Insertion type PET detector module
Figure 6. Silicon Photomultiplier sensor (Left) and flash crystal block (right)
Figure7. Silicon Photomultiplier sensor
Figure 8. PET detection principle
2013.11.28 View 14316 -
Green Technology for Data Centers: Ultra-low Power 100 Gbps Ethernet Integrated Circuit Developed
A new integrated circuit (IC), consuming only 0.75W of electricity, will reduce the power usage of data chips installed at data centers by one-third.
Each day, billions of people surf the Internet for information, entertainment, and educational content. The Internet contains an immeasurable amount of information and knowledge generated every minute all around the world that is readily available to everyone with a click of a computer mouse. The real magic of the Internet, however, lies in data centers, where hundreds of billions of data are stored and distributed to designated users around the clock.
Today, almost every business or organization either has its own data centers or outsources data center services to a third party. These centers house highly specialized equipment responsible for the support of computers, networks, data storage, and business security. Accordingly, the operational cost of data centers is tremendous because they consume a large amount of electricity.
Data centers can consume up to 100 times more energy than a standard office building. Data center energy consumption doubled from 2000 to 2006, reaching more than 60 billion kilowatt hours per year. If the current usage and technology trends continue, the energy consumption of data centers in the US will reach 8% of the country’s total electric power consumption by 2020.
A research team at the Korea Advanced Institute of Science and Technology (KAIST) and Terasquare, Inc. (
http://www.terasquare.co.kr
), a spin-off company of the university,
developed an extremely low-powered integrated circuit for Ethernet that consumes less than 0.75W of electricity but is able to send and receive data at the high speed of 100 gigabits per second (Gbps). The research team, headed by Hyeon-Min Bae, assistant professor of electrical engineering at KAIST, claims that the new microchip uses only one-third of the electricity consumed by the currently installed chips at data centers, thereby helping the centers to save energy.
Integrated circuits are embedded on communication modules that are inserted into a line card. Data centers have numerous line cards to build a network including routers and switches. Currently, 8W ICs are the most common in the market, and they consume a lot of energy and require the largest modules (112 cm
2
of CFP), decreasing the port density of line cards and, thus, limiting the amount of data transmission.
The ultra-low-power-circuit, 100-gigabit, full-transceiver CDR, is the world’s first solution that can be loaded to the smallest communication modules (20 cm
2
of CFP4 or 16 cm
2
of
QSFP28), the next-generation chips for data centers. Compared with other chip producers, the 100 Gbps CDR is a greener version of the technology that improves the energy efficiency of data centers while maintaining the high speed of data transmission.
Professor Hyeon-Min Bae said, “When we demonstrate our chip in September of this year at one of the leading companies that manufacture optical communication components and systems, they said that our product is two years ahead of those of our competitors. We plan to produce the chip from 2014 and expect that it will lead the 100 Gbps Ethernet IC market, which is expected to grow to USD 1 billion by 2017.”
The commercial model of the IC was first introduced at the 39
th
European Conference and Exhibition on Optical Communication (ECOC), the largest optical communication forum for new results and developments in Europe, held from September 22-26 at ExCeL London, an international exhibition and convention center.
Professor Bae added, “We received positive responses to our ultra-low-power 100-Gbps Ethernet IC at the ECOC. The chip will be used not only for a particular industry but also for many of next-generation, super-high-speed information communications technologies, such as high-speed USB, high-definition multimedia interface (HDMI), and TV interface.”
Before joining KAIST, Hyeon-Min Bae worked for many years at Finisar as a researcher who designed and developed the world’s first super-high-speed circuit, the 100 Gbps Ethernet IC.
2013.11.25 View 9783 -
Technology Developed for Flexible, Foldable & Rechargeable Battery
Flexible, Foldable & Rechargeable Battery
The research group of professors Jang-Wook Choi & Jung-Yong Lee from the Graduate School of EEWS and Taek-Soo Kim from the Department of Mechanical Engineering at KAIST has developed technology for flexible and foldable batteries which are rechargeable using solar energy. The research result was published in the online issue of Nano Letters on November 5.
Trial versions of flexible and wearable electronics are being developed and introduced in the market such as Galaxy Gear, Apple’s i-Watch, and Google Glass. Research is being conducted to make the batteries softer and more wearable and to compete in the fast-growing market for flexible electronics.
This new technology is expected to be applied to the development of wearable computers as well as winter outdoor clothing since it is flexible and light. The research group expects that the new technology can be applied to current battery production lines without additional investment.
Professor Choi said, “It can be used as a core-source technology in the rechargeable battery industry in the future. Various wearable mobile electronic products can be developed through cooperation and collaboration within the industry.”
2013.11.21 View 12145 -
Final Results of the 2013 Intelligent SoC Robot War
KAIST hosted the 2013 Intelligent System on Chip (SoC) Robot War, the largest intelligent robot contest in Korea, from Oct. 24 to 27 at KINTEX in Ilsan, Korea.
Professor Hoi-Jun Yoo, from the Department of Electrical Engineering at KAIST, started the contest in 2003 to promote Taekwondo, a Korean martial art, and Korean semiconductor technology to the world.
The winning team was awarded an honorary certificate from Kookiwon, the world headquarters of Taekwondo.
Competitions were held in two different categories: Taekwon Robot and Huro Competition.
In the Taekwon Robot contest, intelligent robots loaded with cameras and semiconductor chips competed in Taekwondo skills.
In the Huro Competition, intelligent humanoid robots competed in detecting and passing huddles.
Approximately 550 participants from 107 groups applied for the 12th Intelligent SoC Robot War and 22 groups were selected for the final tournament. The best teams in each category received an award from the president and prime minister of the Republic of Korea, respectively.
Professor Yoo, the operating chair of the contest, said, “The contest was organized to introduce both technology and tradition by presenting robots with Taekwondo skills. The experiences from this contest could be the foundation for future robot technology and the growth engine for the next generation.”
Professor Yoo is a leading researcher in the field of object recognition chip, and his papers were often presented at the International Solid State Circuits Conference.Details of the contest can be found at http://www.socrobotwar.org.
2013.11.15 View 9103