CO
-
Spillover Phenomenon Identified Using Model Catalyst System
Researchers at KAIST have identified spillover phenomenon, which has remained controversial since its discovery in the early 1960s.
KAIST Department of Chemical and Biomolecular Engineering’s Professor Min-Gi Choi and his team has explained the "spillover phenomenon," using their own model catalyst system where platinum is selectively located within the amorphous aluminosilicate.
The research results were published on the 25th February online edition of Nature Communications.
Spillover refers to a phenomenon that occurs when hydrogen atoms that have been activated on the surface of metals, such as platinum, move to the surface of the catalyst. It was predicted that this phenomenon can be used to design a catalyst with high activity and stability, and thus has been actively studied over the last 50 years.
However, many cases of the known catalysts involved competing reactions on the exposed metal surface, which made it impossible to directly identify the presence and formation mechanism of spillover.
The catalysts developed by the researchers at KAIST used platinum nanoparticles covered with aluminosilicate. This only allowed the hydrogen molecules to pass through and has effectively blocked the competing reactions, enabling the research team to study the spillover phenomenon.
Through various catalyst structure and reactivity analysis, as well as computer modeling, the team has discovered that Brönsted acid sites present on the aluminosilicate plays a crucial role in spillover phenomenon.
In addition, the spillover-based hydrogenation catalyst proposed by the research team showed very high hydrogenation and dehydrogenation activity. The ability of the catalyst to significantly inhibit unwanted hydrogenolysis reaction during the petrochemical processes also suggested a large industrial potential.
Professor Min-Gi Choi said, “This particular catalyst, which can trigger the reaction only by spillover phenomenon, can be properly designed to exceed the capacity of the conventional metal catalysts. The future goal is to make a catalyst with much higher activity and selectivity.”
The research was conducted through funds subsidized by SK Innovation and Ministry of Science, ICT and Future Planning.
The senior research fellow of SK Innovation Seung-Hun Oh said, “SK Innovation will continue to develop a new commercial catalyst based on the technology from this research.”
Juh-Wan Lim and Hye-Yeong Shin led the research as joint first authors under supervision of Professor Min-Gi Choi and computer modeling works were conducted by KAIST EEWS (environment, energy, water, and sustainability) graduate school’s Professor Hyeong-Jun Kim.
2014.03.03 View 12198 -
Seung-Han Lee, a doctoral student in electrical engineering, receives the best paper award from ISQED 2014
Seung-Han
Lee, a doctoral candidate in the department of electrical engineering at KAIST,
received a Best Paper Award from the International Symposium on Quality
Electronic Design (ISQED), a high-profile international conference started in 2000 to promote innovation and quality in electronic and
engineering designs through inter- and multidisciplinary approaches. The
award ceremony will take place at the 2014 ISQED on March 3-5, 2014 at the Convention
Center in Santa Clara, CA, USA.
Professor
Chong-Min Kyung, an advisor to Seung-Han, expressed his excitement about his student's achievement.
“This is
the first time a Korean has ever received the best paper award at this academic
conference. It’s great news to our student as well as to KAIST.”
The topic
of Lee’s research paper was dynamic cache data management for minimizing the
energy consumption of three-dimensional multi-processor semiconductor chips.
2014.03.03 View 13148 -
KAIST President Held One-year Anniversary Press Conference
President Steve Kang had a press conference
on February 25, 2014 at the Faculty Club on campus, commemorating the first
year of his presidency. About 30 different media representatives nationwide
attended the meeting.
At his first press conference on the anniversary of his tenure, President Kang
described what he has achieved in the past year, which were: 1) rebuilding the
campus culture to start a campaign for mutual respect, trust, and open
communication by holding meetings with the members of the KAIST community more
than 60 times, 2) establishing core values, creativity and challenge, to
enhance the fabric of the community, 3) restructuring of the university
administration, and 4) the announcement of the mid- and long-term development
plan.
He also mentioned that “2014 will be another exciting year for KAIST to make
more progress” and laid out a few major projects to be implemented this year:
launching of the “Committee for Engineering Education Innovation,” “Startup
KAIST” (an entrepreneurship program), “Greater Collaboration in Technology
Translation and Management with Seoul National University,” and “KAIST End Run”
(a global business incubation program).Explanation of 2014 Major Endeavors by President KangFor
the past decade, domestic engineering schools weighed SCI dissertation
publication more heavily in university evaluations, yielding a world-class
research level. However, such an approach resulted in placing less importance
on entrepreneurship, commercialization, or creating economic values.As a
result, engineering Professors have been evaluated as being too focused on theoretical
SCI dissertation research rather than practical research that could yield
economic benefits through commercialization of developed technology. In
addition, some have criticized that engineering universities have not educated
creative researchers demanded by the industry.KAIST
has begun responding to these criticisms and has made a few suggestions to strengthen
engineering education, promote entrepreneurship in engineers, and globalize Korean
venture companies.As
part of such efforts, KAIST established the KAIST Education and Research
Innovation Committee, composed of various individuals from the industry,
research institutes, alumni, faculty members, and others, to discuss ways to reinforce
engineering education.
A
course to encourage entrepreneurship will be implemented.Startup
KAIST will develop and commercialize innovative ideas from members of KAIST, and
the End Run project will enable students and faculty to establish a global,
venture company. KAIST hopes that a new entrepreneurial culture will be created
on campus, thereby the research success of KAIST members will lead to commercialization
and startups.KAIST
plans on releasing free internet lectures as part of its knowledge contribution
and sponsoring programs which will level the playing field in eduation.KAIST
will establish the KAIST Open Online Course (KOOC). An entrepreneurship
curriculum will be developed for KOOC. KAIST will start trials for KOOC from
2015, gradually expanding to include more courses.
2014.02.27 View 11031 -
Former Minister of Science and Technology, Dr. KunMo Chung, Awarded KAIST Honorary Doctorate
KAIST will confer an honorary doctorate on former minister of Science and Technology, Dr. KunMo Chung, at the 2014 KAIST graduation ceremony on Friday, February, 21.Dr. Chung presented the Survey Report for the Establishment of the Korea Advanced Institute of Science (KAIS) to the United States Agency for International Development (USAID) in 1969. This proposal for nurturing the advanced science technology elite and boost Korean industrial development became the foundation for KAIS, which is now known as KAIST.After passing the KAIS Foundation Law in 1970, Dr. Chung designed the faculty room, secured faculty members, and acquired a $6 million education loan from the USAID. Dr. Chung devoted himself to research and teaching. His first appointment was the position of assistant professor at the University of South Florida, followed by research professor positions at the Princeton Nuclear Fusion Research Center and MIT Nuclear Engineering, and an associate professor position in the Department of Electrophysics at the Polytechnic Institute of New York.When KAIS was founded on Feb. 16, 1971, 31-year-old Dr. KunMo Chung became the provost and a professor in the Electronic and Electrical Science Department where he made outstanding contributions to the development of science and technology in Korea.
2014.02.21 View 12438 -
A student club for education donation at KAIST received an award from the City of Daejeon Education Superintendent
One of the student clubs at KAIST, the Midam Scholarship Fund, was awarded by the education superintendent of Daejeon City in recognition of its contributions to the education benefits of underprivileged students in the region.The Midam Scholarship Fund was established in 2009, and since then, it has helped many teenage students who are suffering financial hardships through knowledge donation. The Fund organized private classes and mentoring programs for the students as well as collaborating with other education donation clubs at seven different universities in Korea.The award ceremony was held on February 20th at the City Hall in Daejeon.
2014.02.21 View 8819 -
KAIST developed an extremely low-powered, high-performance head-mounted display embedding an augmented reality chip
Walking around the streets searching for a place to eat will be no hassle when a head-mounted display (HMD) becomes affordable and ubiquitous. Researchers at the Korea Advanced Institute of Science and Technology (KAIST) developed K-Glass, a wearable, hands-free HMD that enables users to find restaurants while checking out their menus. If the user of K-Glass walks up to a restaurant and looks at the name of the restaurant, today’s menu and a 3D image of food pop up. The Glass can even show the number of tables available inside the restaurant. K-Glass makes this possible because of its built-in augmented reality (AR) processor. Unlike virtual reality which replaces the real world with a computer-simulated environment, AR incorporates digital data generated by the computer into the reality of a user. With the computer-made sensory inputs such as sound, video, graphics or GPS data, the user’s real and physical world becomes live and interactive. Augmentation takes place in real-time and in semantic context with surrounding environments, such as a menu list overlain on the signboard of a restaurant when the user passes by it, not an airplane flight schedule, which is irrelevant information, displayed. Most commonly, location-based or computer-vision services are used in order to generate AR effects. Location-based services activate motion sensors to identify the user’s surroundings, whereas computer-vision uses algorithms such as facial, pattern, and optical character recognition, or object and motion tracking to distinguish images and objects. Many of the current HMDs deliver augmented reality experiences employing location-based services by scanning the markers or barcodes printed on the back of objects. The AR system tracks the codes or markers to identify objects and then align them with virtual reality. However, this AR algorithm is difficult to use for the objects or spaces which do not have barcodes, QR codes, or markers, particularly those in outdoor environments and thus cannot be recognized. To solve this problem, Hoi-Jun Yoo, Professor of Electrical Engineering at KAIST and his team developed, for the first time in the world, an AR chip that works just like human vision. This processor is based on the Visual Attention Model (VAM) that duplicates the ability of human brain to process visual data. VAM, almost unconsciously or automatically, disentangles the most salient and relevant information about the environment in which human vision operates, thereby eliminating unnecessary data unless they must be processed. In return, the processor can dramatically speed up the computation of complex AR algorithms. The AR processor has a data processing network similar to that of a human brain’s central nervous system. When the human brain perceives visual data, different sets of neurons, all connected, work concurrently on each fragment of a decision-making process; one group’s work is relayed to other group of neurons for the next round of the process, which continues until a set of decider neurons determines the character of the data. Likewise, the artificial neural network allows parallel data processing, alleviating data congestion and reducing power consumption significantly. KAIST’s AR processor, which is produced using the 65 nm (nanometers) manufacturing process with the area of 32 mm2, delivers 1.22 TOPS (tera-operations per second) peak performance when running at 250 MHz and consumes 778 miliWatts on a 1.2V power supply. The ultra-low power processor shows 1.57 TOPS/W high efficiency rate of energy consumption under the real-time operation of 30fps/720p video camera, a 76% improvement in power conservation over other devices. The HMDs, available on the market including the Project Glass whose battery lasts only for two hours, have revealed so far poor performance. Professor Yoo said, “Our processor can work for long hours without sacrificing K-Glass’s high performance, an ideal mobile gadget or wearable computer, which users can wear for almost the whole day.” He further commented:“HMDs will become the next mobile device, eventually taking over smartphones. Their markets have been growing fast, and it’s really a matter of time before mobile users will eventually embrace an optical see-through HMD as part of their daily use. Through augmented reality, we will have richer, deeper, and more powerful reality in all aspects of our life from education, business, and entertainment to art and culture.” The KAIST team presented a research paper at the International Solid-State Circuits Conference (ISSCC) held on February 9-13, 2014 in San Francisco, CA, which is entitled “1.22TOPS and 1.52mW/MHz Augmented Reality Multi-Core Processor with Neural Network NoC for HMD Applications.”Youtube Link: http://www.youtube.com/watch?v=wSqY30FOu2s&feature=c4-overview&list=UUirZA3OFhxP4YFreIJkTtXw
2014.02.20 View 19151 -
World's Largest Web Conference To Be Held in Korea
The 2014 International World Wide Web Conference (WWW 2014), the world’s most prestigious academic conference in the field of web, will be held for the first time in Korea. The conference is to be last for five days at Seoul COEX, from 7th to 11th April. International World Wide Web Conference covers a wide range of web-related areas, including technologies, research papers, services and more. Since the first conference in 1994 in Switzerland, it has been held in various parts of North America, Europe, South America and Asia, attracting more than 1000 experts in the field. The 23rd International World Wide Web Conference is managed by the International World Wide Web Conferences Steering Committee (IW3C2) and co-hosted by KAIST and National Agency for Technology and Standards, as well as sponsored by Korea Information Science Society and the World Wide Web Consortium (W3C). Keynote speakers for this year’s conference include inventor of the World Wide Web, Sir Tim Berners-Lee, senior vice president of Microsoft, Dr. Qi Lu, and Carnegie Mellon University’s Prof. Christos Faloutsos, as well as Samsung Electronic’s vice president Jong-Deok Choi. In addition to WWW 2014, BigData Innovators Gathering (BIG 2014) and Web for Access (W4A 2014) is also to be held in joint. KAIST Computer Sciences Department’s Prof. Jinwan Jeong, in charge of directing this year’s conference, said “From one-sided 1st generation web to two-way 2nd generation web, such as blogs, and then recently to the 3rd generation web, which include social networks and semantic webs, the web technologies has grown vastly over the past 25 years. WWW 2014 will be the opportunity for Korea to discuss with the world about the informatization and future of the web.” Pre-registration for WWW 2014 can be applied at the official webpage for WWW 2014 (http://www2014.kr) before 17th February.
2014.02.14 View 12896 -
Professor Hoi-Jun Yoo Appointed as the First Asian University Chairman of the ISSCC
Hoi-Jun Yoo, a professor of Electrical Engineering Department at KAIST, was chosen to be the first Asian University Chairman of the ISSCC (International Solid-State Circuits Conference) held in San Francisco, USA, from February 10 to 13, 2014. His term will last one year from April, 2014. Professor Yoo ranked tenth globally in thesis achievement over the 60-year history of the ISSCC. He ranked fourth globally over the last ten years and was the highest-ranked member from Asia over that time. He received an award for this remarkable achievement in 2012. ISSC is a world-renowned conference in the semiconductor field, where only 200 strictly selected papers are presented by semiconductor-related enterprises, research centers, and university representatives. Nicknamed the “The Olympics of the Semiconductor”, ISSCC runs for 4 days and hosts more than 3000 semiconductor engineers from around the world. It is most famous for the first CPU presentation by Intel and the first memory technology release of Samsung. Professor Yoo stated, “The Korean Semiconductor Engineering is leading the world’s technology instead of imitating it.” He aspires to devote himself to upgrading semiconductor engineering around the world.
2014.02.14 View 12458 -
ICISTS-KAIST Talk Concert 2014
The International Conference for the Integration of Science, Technology and Society at KAIST (ICISTS-KAIST) will hold a talk entitled “Scientific Technology and Culture” at Youngdungpo Art Hall in Seoul on Tuesday, February 11, 2014.The three main presenters will be: Jin-Hwa Kim, Director of Korbit, Dong-Hyeon Jo, Chief of New Business at Nexon, and media artist Yi-Nam Lee. They will address the meeting of culture and scientific technology in the fields of art, games, and other genres.Jin-Hwa Kim is the director of Korbit, the first Korean bitcoin exchange, and wrote The Next Money: Bitcoin, the world’s first bitcoin textbook. He will elaborate on how science and technology are constantly changing and have affected popular culture, and how public demand gave birth to bitcoin.Dong-Hyeon Jo from Nexon will explain how the appearance of new media and platforms such as smartphones has changed our lives.Media artist Yi-Nam Lee has been described as “the second Nam-June Paik,” an internationally-acclaimed video artist, for his integration of oriental and western masterpieces with modern media. During the event, samples of his artwork will be displayed.ICISTS-KAIST is a student organization which has held a conference every year since 2005 with hundreds of students attending from many parts of the world, Asia in particular.
2014.02.07 View 12465 -
2014 Davos Forum: KAIST-EPFL Connection
The Korean-American Science and Technology News (KASTN), a biweekly global electronic newsletter carrying news and analyses in science and technology, as well as social, economic, and cultural issues related to the general interest of the Korean-American professional community, published an article on the partnership agreement made by KAIST and the Ecole Polytechnique Federale Lausanne (EPFL) during the 2014 World Economic Forum held at Davos, Switzerland, from January 22nd to 25th.
For the article, please click the link below: KASTN Issue 14-05, February 26, 2014
http://www.phy.duke.edu/~myhan/b_14-05.pdf
2014.02.04 View 10606 -
Is it possible to identify rumors on SNS?
Rumors
sporadically spread with people with fewer followers in the centerResearched
over 100 rumors in the US from 2006 to 2009 Is it
possible to filter information on SNS such as Twitter and Facebook? A research
team led by Professor Mee-Young Cha from the Department of Cultural Technology
Graduate School at KAIST, Professor Kyo-Min Jung of Seoul National University,
Doctor Wei Chen and Yajun Wang of Microsoft Asia, has developed a technology
that can accurately filter out information on Twitter to 90% accuracy. The
research not only deduced a new mathematical model, network structure, and
linguistic characteristics on rumors from SNS data, but is also expected to
enhance the effort to make secure technology to regulate Internet rumors. The team
analysed the characteristics of rumors in over 100 widespread cases in the US
from 2006 to 2009 on Twitter. The team gathered data, which included a range of
areas such as politics, IT, health and celebrity gossips, and their analysis
could identify rumors to 90% accuracy. The filtering was more accurate in
rumors that included slanders or insults. The
research team identified three characteristics of the spread of rumors. Firstly,
rumors spread continuously. Normal news spreads widely once and is mentioned
rarely again on media, but rumors tend to continue for years. Secondly,
rumors spread through sporadic participation of random users with no
connections. Rumors start from people with fewer followers and spread to the
more popular. This phenomenon is often observed in rumors concerning
celebrities or politicians. Lastly,
rumors have unique linguistic characteristics. Rumors frequently include words
(such as “it may be true,” “although not certain, I think,” “although I cannot
fully remember”) related to psychological processes that question, deny, or
infer the reliability of the information. Professor
Cha said, “This research deduced not only a statistical and mathematical model
but also is an integrated research on social psychological theory on the
characteristics of rumors that attract great attention from the society based
on ample data.” The results
were made public in IEEE International Conference on Data Mining last December
in Texas, USA.
2014.02.03 View 12390 -
Collaborated Performance and Talk Battle Event Held by Graduate School of Culture Technology, KAIST
A unique event consisting of a new media performance and talk battle was held for middle school, high school, and college students during the winter break.
The Graduate School of Culture Technology at KAIST and the Korea Art Conservatory co-organized the 3rd Young Leaders Forum under the title “Collaboration of the Current and the New Culture” on January 18th at the Seoul Namsan Traditional Theater.
The Young Leaders Forum was founded to share knowledge and wisdom among different fields and generations and to foster creative lifestyles through the collaboration of wisdom.
The collaborated performance, “The Garden of Western Heaven”, was performed using new media technology by students from the Graduate School of Culture Technology and actors from the Korea Art Conservatory.
Three panels participated in the “Talk Battle” and held a discussion on “The New Culture from Performance and Collaboration”.
Woong-Rae Cho, CEO of The Mackiss Company, who sponsored the clay road in Gyejok Mountain and the Concert in the Forest, Professor Sung-Kuk Kim from School of Korean Music at Chung-Ang University, and Je-Ho Oh, a graduate student from the Graduate School of Culture Technology at KAIST participated in the discussion and shared their opinions with the audience.
2014.01.27 View 7132