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Professor Seong-Ihl Woo Develops New High-Speed Research Method
Professor Seong-Ihl Woo Develops New High-Speed Research Method
Reduce research periods and expenses for thin film materials several ten times
Posted on the online version of Proceedings of National Academy of Sciences of the United States of America (PNAS) on January 9
A team led by Seong-Ihl Woo, a professor of KAIST Department of Chemical & Biomolecular Engineering and the director of the Center for Ultramicrochemical Process Systems, has developed a high-speed research method that can maximize research performances and posted the relevant contents on the online version of Proceedings of National Academy of Sciences of the United States of America (PNAS), a distinguished scientific journal, on January 9, 2007.
Professor Woo’s team has developed a high-speed research method that can fabricate several tens or several thousands of thin films with different compositions (mixing ratio) at the same time and carry out structural analysis and performance evaluation more than ten times faster and accurately, which leads to the shortening of the research processes of thin film materials. This is an epoch-making method that can reduce research periods and expenses several ten times or more, compared to the previous methods.
The qualities of final products of electronic materials, displays, and semi-conductors depend on the features of thin film materials. Averagely, it takes about two weeks or longer to fabricate a functional thin film and analyze and evaluate its performances. In order to fabricate thin film materials in need successfully, more than several thousand times of tests are required.
The existing thin film-fabricating equipment is expensive one demanding high-degree vacuum, such as chemical vapor deposition, sputtering, physical vapor deposition, laser evaporation, and so on. In order to fabricate thin films of various compositions with this equipment, a several million won-worth target (solid-state raw material) and precursors (volatile organic metal compound) pricing several hundreds won per gram are required. Therefore, huge amount of experiment expense is demanded for fabrication of several ten thousands of thin films with various compositions.
Professor Woo’s team has developed ‘combinatorial droplet chemical deposition’ equipment, which does not demand high-degree vacuum and is automated by computers and robots, by using a new high-speed research measure. The equipment is priced at about 1/5 of the existing equipment and easy for maintenance.
This equipment uses cheap reagents, instead of expensive raw materials. Reagents necessary to form required compositions are dissolved in water or proper solvents, and then applied by high frequencies to make several micrometer-scaled droplets (fine liquid droplet). Theses droplets are moved by nitrogen and dropped onto a substrate, which is to be fabricated into a thin film, and then subsequent thermal treatment is applied to the substrate to fabricate a thin film of required composition. At this moment, several tens or several hundreds of thin films with various compositions can be fabricated at the same time by reducing the size of thin film specimens into millimeter scale with the use of shade mask and adjusting vaporization time with masks, the moving speed of which can be adjusted. The expenses for materials necessary for the fabrication of thin films with this equipment amount to several ten thousands won per 100 grams, which is in the range of 1/100 and 1/10 of the previous methods, and the research period can be shortened into one of several tenth.
“If this new method is applied to the development of elements in the fields of core energy, material and health, which have not been discovered by the existing research methods so far, as well as researches in thin film material field, substantial effects will be brought,” said Professor Woo.
‘Combinatorial droplet chemical vaporization’ equipment is pending a domestic patent application and international patent applications at Japan and Germany. This equipment will be produced by order and provided to general researchers.
2007.02.02 View 15663 -
SK Telecom Vice Chairman Jung-Nam Cho appointed as Chairman of KAIST BOT
SK Telecom Vice Chairman Jung-Nam Cho appointed as Chairman of KAIST BOT
KAIST Board of Trustees (BOT) appointed Jung-Nam Cho, Vice chairman of SK Telecom, as the chairman of KAIST BOT at its 178th special session, Tuesday, January 23, 2007.
Chairman Cho graduated from Seoul National University (SNU) and studied business administration at University of California in Berkeley and Chief Executive Officer’s courses at the College of Business Administration of SNU. He served as managing director of technical part, etc. at Yugong, the predecessor of SK Corporation (1970 ? 1995) and the president of service and production division and the chairman of the central research institute at SK Telecom Co., Ltd. (1995-1997). He is the former vice chairman of the National Academy Engineering of Korea and, now, the chairman of Korean Radio Promotion Association and the chairman of Korea Amateur Fencing Association.
He received an award for excellence in information and communication and Dongtap Industry Medal of the Ministry of Information and Communication for his contribution to world-first commercialization of CDMA in 2001. He also won a medal for his contribution to the development from Vietnam government in 2003.
His chairmanship term is from January 23, 2007 thru April 13, 2007.
2007.02.02 View 12576
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Singer Janghoon Kim Donates Development Fund to KAIST
Singer Janghoon Kim Donates Development Fund to KAIST
- Generously donates part of earnings from his concert where HUBO performed for development of science
- Opportunity for activation of science culture through encounter between science and culture
Singer Janghoon Kim donated 50 million won from his concert earnings for KAIST development fund.
Singer Kim visited KAIST on January 16 (Tue) and donated the development fund at the joint lecture room in KAIST Mechanical Engineering B/D.
Singer Kim had a concert at the end of the last year where he performed with ‘HUBO’ and ‘Albert HUBO’, human-like robots of KAIST HUBO center.
Singer Kim made a donation to express his gratitude to KAIST Professor Joonho Oh and his research team, who assisted his concert actively to allow HUBO to join the concert in spite of technical difficulties and research obstacles.
“Although HUBO has performed various activities so far, it is the first time to make a successful performance with a singer on a stage. Honestly, I hesitated a lot to allow HUBO to join Kim’s concert due to safety problems etc., but I was so impressed by Kim’s interest and passion for science, and thus decided HUBO’s joining the concert. This is the first case how robots can exchange with public cultures. I wish this case will be a momentum to activate science culture and make people feel closer to science,” Professor Oh said.
The donation will be spent partly as KAIST development fund (20 million won) and partly on the publicity of science and technology via HUBO (30 million won).
2007.01.23 View 12902
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KAIST Alumni Awards of the Year 2006
KAIST Alumni Awards of the Year 2006
Byung-Kyu Chang, Jin-Gon Kim, Sin-Bae Kim, and Sang-Ki Rhee (From left)
KAIST Alumni Association (Chairman Sam-Soo Pyo, CEO of Oracle Korea) named the recipients of ‘KAIST Alumni Awards of the year 2006’ and conferred the awards at its New Year’s Greetings, which was held at Grand Ballroom in JW Marriott Hotel, Saturday, January 13.
KAIST Alumni Awards of the Year were conferred on ▲ Byung-Kyu Chang, CEO of Cheot-noon Inc., at the young alumni section, ▲ Jin-Gon Kim, Professor of POSTECH, at the academy section, ▲ Sin-Bae Kim, CEO of SK Telecom, at the industry section, and ▲ Sang-Ki Rhee, President of Korea Research Institute of Bioscience & Biotechnology (KRIBB), at the society section.
The young alumni section winner Byung-Kyu Chang, Master of KAIST Computer Sciences (Class ‘97), has jointly created Neowiz, Korea’s typical internet venture company, and created Cheot-noon Inc., internet-searching company, to substantially contribute to the development of Korea’s IT industries.
The academy section winner Jin-Gon Kim, Master of KAIST Chemical Engineering (Class ‘82), has made great research achievements in nano field, such as the development of high molecular tube theory, etc.
The industry section winner Sin-Bae Kim, Master of KAIST Industrial Engineering (Class ‘80), has contributed to the development of mobile communication and information system industries with his outstanding technology management capabilities and shown excellent models to junior engineers with his creative managing philosophies.
The society section winner Sang-Ki Rhee, Ph.D of KAIST Chemical & Biomolecular Engineering (Class ‘80), has contributed to the development of practicalization technologies in genetic engineering field and the government’s establishment of biotechnology policies, and created large-scaled research performances through management renovation during his reign as the president of KRIBB.
‘KAIST Alumni Award of the Year’, the greatest honor of KAIST alumni, was established in 1992 to encourage alumni’s activities by yearly awarding alumni who contribute to the development of the nation and the society and raise the fame of alma mater.
2007.01.22 View 13558
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List of successful candidates of the documentary examination for the second round of student collection for undergraduate courses 2007
List of successful candidates of the documentary examination for the second round of student collection for undergraduate courses 2007
List of successful candidates
※ Matters to be attended to
- Interviewees are asked to be with basic interview data (attached file), admission ticket for examination, and writing instruments.
- Please, admit basic interview data to interviewers directly at interview.
- Please, use the data attached to this information as basic interview data.
- Interviewees are asked to come to Classroom No. 304 of Creative Learning Building (E11).
2007.01.15 View 10134
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Professor Jongwon Lee wins Korean Engineering Award
Professor Jongwon Lee wins Korean Engineering Award
Professor Jongwon Lee of the department of Mechanical Engineering won the 7th Korean Engineering Award conferred by the Ministry of Science and Technology and Korean Science and Engineering Foundation.
Professor Lee is a world-famous scholar in the field of ‘dynamics and vibration of rotors’ and his work in 1993, ‘Vibration Analysis of Rotors’, is highly recognized as a creative and practical research on the dynamics of rotors.
The Korean Engineering Award is conferred on domestic scientists who have made world-level research achievements in the engineering field by the Ministry of Science and Technology and Korean Science and Technology Foundation every two years.
2007.01.11 View 12159
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Yoonsun Doh Wins 'Outstanding Poster Paper Award' at IDW
Yoonsun Doh Wins ‘Outstanding Poster Paper Award’ at IDW
Yoonsun Doh, a master-course student at the Division of Electrical Engineering (Advisory professor Kyungchul Choi) won the Outstanding Poster Paper Award at IDW 2006, which was held at Otsu, Japan on December 8, 2006.
The title of Doh’s paper is ‘Relationship between IR Emission of Reset Discharge and Image Retention in AC PDP’.
At the paper, Doh proposed a method capable of quantitatively measuring the temporary image-sticking phenomena, which is raised as a problem that impairs the quality of images on an AC PDP.
2006.12.26 View 13138
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KAIST and Hynix Semiconductor Jointly Foster Manpower
KAIST and Hynix Semiconductor Jointly Foster Manpower
- Joint running of industry-academy programs for excellent semiconductor manpower training
- Regular mutual manpower exchange for on-site education and research
KAIST Department of Raw Material Science and Engineering and Hynix Semiconductor concluded an agreement to manage a ‘joint industry-academy business group’, Wednesday, December 6.
The both bodies reached an agreement to jointly promote the first step of ‘the excellent semiconductor manpower training program’ for 4 years beginning 2007.
KAIST plans to foster creative and excellent semiconductor manpower possessing both of theories and technologies through research topics and lectures that reflect Hynix Semiconductor’s necessities, and will promote regular manpower exchanges with Hynix Semiconductor to enhance trainees’ on-site adaptabilities.
Hynix Semiconductor will actively participate in the researches and support the expenses for research and education and high-cost equipment. Furthermore, Hynix Semiconductors will dispatch its researchers to KAIST as adjunct professors to educate doctorate students, who join the researches, and assist on-site education.
2006.12.11 View 12953
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Final competition of 'UFC' contest
Final competition of ‘UFC’ contest
Joint university team D-M2 won first prize
The final winner of ‘the 2nd Ubiquitous Fashionable Computer (UFC) contest‘, co-hosted by KAIST and the Korean Society for Next-Generation Computing (KSNGC), was determined.
At the final competition of November 17 among 9 qualified teams, the first prize went to D-M2, composed of students from Seokyeong University, Kookmin University, Hongik University, and Sungshin Women’s University. D-M2 manufactured a work utilizing a user’s motion information by applying motion capture technologies to UFC. Particularly, the work gained a high score at the item of the functional perfection by controlling the robot according to a user’s motion.
The gold prize went to the smart jacket by Jjik-eo-cha-ki (Kwangwoon University and Duksung Women’s University). The smart jacket is embedded with an intelligent clothes function in terms of checking a user’s status in a real-time basis and delivering it to a doctor, etc.
The silver and bronze prizes went to Samsung Software Membership (SSM) and Hanse University, respectively. SSM manufactured a training suit with sensors for grasping the movement of each articulation of a user built-in, and Hanse University developed a system enabling blinders to get a voice service of general documents or books regardless of time and place.
The participants composed of university students or graduate students have passed the severe qualifying contest through the examination of written plan and presentation of last April and manufactured creative works that realize the fusion of IT technologies and fashion.
At the contest, that fact that all winners of the first, gold, and silver prizes were the members of SSM gained more attention.
UFC is a new field that pursuits the enhancement of computer technologies and the creation of fashion simultaneously by fusing IT technologies and fashions. UFC is a one-step advanced field of the existing wearable computer and an important cutting-edge field that leads a computer industry in the era of ubiquitous.
“The level of the works exhibited was higher than I’d expected and the cooperation between the departments of Closing Textile and Electronics appeared to be so positive, which made me expect more brilliant future of the next-generation computing industry,” said Hoijoon You, Co-chairman of the contest and professor of the department of Electrical Engineering.
2006.11.27 View 15278
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Professor Ikho Song Wins Academic Award of Haedong Information & Communication
Professor Ikho Song Wins Academic Award of Haedong Information & Communication
Professor Ikho Song (Division of Electrical Engineering) won an academic award of Haedong Information & Communication at a regular meeting of Korean Institute of Communication Sciences 2006. The award was given to Professor Song in recognition of his presenting excellent papers at many renowned domestic and global academic journals and his substantial contribution to the development of the information & communication field.
Meanwhile, Hyungmoon Kwon, a doctorate student under Professor Song’s supervisory, also won an award of excellent paper at the meeting.
2006.11.27 View 11975
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Jinkon Chung won gold prize at 'Intel student paper contest'
Jinkon Chung won gold prize at ‘Intel student paper contest’
Jinkon Chung, doctorate student at the Division of Electrical Engineering under Professor Yonghoon Lee’s supervisory, won the gold prize at ‘the student paper contest 2006’ organized by Intel Korea.
Chung proposed an important key for the next-generation mobile communication technologies at his paper entitled with ‘Regularized channel diagonalization for multi-user MIMO downlink using a modified MMSE criterion’.
That is a new linear processing algorithm showing superior performances to the existing ZF-based or MMSC-based methods under the circumference of multi-user MIMO, which is the most spotlighted field in the recent next-generation mobile communication technologies, which was highly evaluated in the contest.
Meanwhile, Howon Lee and Sunghoon Lim, Division of Electrical Engineering, also won bronze prizes.
2006.11.27 View 12754
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Gold prize for Sungkoo Yeo and silver prize for Youngsik Kim at 'Samsung Electrics paper contest'
Gold prize for Sungkoo Yeo and silver prize for Youngsik Kim at ‘Samsung Electrics paper contest’
Sungkoo Yeo, doctorate student at the division of Electrical Engineering, and Youngsik Kim, doctorate students at the division of Mechanical Engineering, won gold and silver prizes respectively at ‘the 2nd Inside edge paper contest’ organized by Samsung Electronics.
Yeo, under the supervisory of Professor Youngse Kwon, won the glory of gold prize in recognition of his highly evaluated researches in the fields of silicon-based micro mold manufacturing technologies and fine shaping technologies revealed by his paper of ‘"Fabrication of Microlens array Using PDMS Replica Molding and Oxidized Porous Silicon Bulk Micromachining’.
Kim, under the supervisory of Professor Seungwoo Kim, also won the silver prize for his research performances over the thickness pattern measuring technologies of transparent thin film coated on the pattern of an opaque metal in the field of optical technology unveiled by his paper of "Dispersive white-light interferometry for in-line inspection of thin-film layers on patterned structures".
Inside Edge paper contest is an academic paper contest organized by Samsung Electronics to reveal the fresh ideas and potential technologies of the young talented.
2006.11.27 View 15213