[arirang] KAIST researchers develop mask that can ..
Updated: 2020-03-16 17:07:20 KST
A research team at the Korea Advanced Institute of Science and Technology, or KAIST, has succeeded in developing a mask that can be reused even after being washed 20 times.
Welcome news in Korea, where there's a severe mask shortage.
The researchers say the nanofiber filter inside the cotton mask, after all the washes, maintained 94 percent of its original effectiveness.
It can be used for more than a month when disinfected with ethanol.
The team say they hope the mask can help solve the shortage as well as the environmental problems caused when masks are thrown away.
Reporter : jhee＠arirang.com
>> arirang News
[AZoNano] New Strategy for Synthesizing Single-Cry..
A group of researchers from KAIST has developed a new approach for producing single-crystalline graphene quantum dots, which release stable blue light.
Uniformly ordered single-crystalline graphene quantum dots of various sizes synthesized through solution chemistry. (Image credit: KAIST)
The scientists verified that a display built using their synthesized graphene quantum dots effectively released blue light with stable electric pressure, apparently resolving the persistent problems faced in achieving blue light emission in manufactured displays.
The research, headed by Professor O Ok Park from the Department of Chemical and Biological Engineering, appeared online in Nano Letters on July 5th, 2019.
Graphene has won increased interest as a next-generation material for its electrical and heat conductivity and also its transparency. However, single- and multi-layered graphene have characteristics of a conductor hence it is not easy to be applied into a semiconductor.
The semiconductor’s unique characteristic of bandgap will be shown to release the light in the graphene only upon being downsized to the nanoscale. This illuminating featuring of dot is known as a graphene quantum dot.
Traditionally, single-crystalline graphene has been produced by chemical vapor deposition (CVD) on nickel or copper thin films, or by peeling graphite chemically and physically. However, graphene produced through chemical vapor deposition is principally employed for large-surface transparent electrodes. However, graphene fabricated by chemical and physical peeling has irregular size defects.
The group of scientists described that their graphene quantum dots showed a highly stable single-phase reaction when they combined amine and acetic acid with an aqueous solution of glucose. After that, they produced single-crystalline graphene quantum dots through the self-assembly of the reaction intermediate.
During fabrication, the group created a new separation technique at a low-temperature precipitation, which resulted in the successful production of homogeneous nucleation of graphene quantum dots through a single-phase reaction.
Professor Park and his teammates have created solution-phase synthesis technology that enables the construction of the desired crystal size for single nanocrystals down to 100 nm. It is supposedly the first production of the homogeneous nucleation of graphene through a single-phase reaction.
This solution method will significantly contribute to the grafting of graphene in various fields. The application of this new graphene will expand the scope of its applications such as for flexible displays and varistors.
Professor O Ok Park, Department of Chemical and Biological Engineering, KAIST
This study was a joint project with a group from Korea University under Professor Sang Hyuk Im at the Department of Chemical and Biological Engineering, and was supported by the National Research Foundation of Korea, the Nano-Material Technology Development Program from the Electronics and Telecommunications Research Institute (ETRI), KAIST EEWS, and the BK21＋ project from the Korean government.
Source: https://www.kaist.ac.kr/html/en/index.html
[Electronics Online] A powerful tool to analyze MO..
An international team, including staff from the Korea Advanced Institute of Science and Technology (Kaist; Daejeon, South Korea; www.kaist.ac.kr), led by Kaist’s professor Jeung Ku Kang, has developed a technology to analyze the gas adsorption behavior of molecules of each individual pore of a metal organic framework (MOF). Existing technology is only able to measure the amount of gas molecules adsorbed by the material, without directly observing the adsorption behavior.
The team developed a realtime gas-adsorption crystallography system by integrating an existing X-ray diffraction measurement device that can provide structural information and a gas adsorption measurement device. The system allows the observation of a mesoporous MOF with multiple pores. The team categorized the adsorption behavior of MOF molecules by pore type, achieving the identification of a stepwise adsorption process that was not previously possible to analyze.
The team analyzed how the pore structure and the type of adsorption molecule affect the adsorption behavior to suggest what type of MOF structure is suitable as a storage material for each type of adsorption behavior. Specifically, the team used two MOFs, PCN-224 and ZIF-412 which contain two and three different types of pore, respectively, to generate isotherms of individual pores by combining gas adsorption measurements with in situ X-ray diffraction.
This isotherm decomposition approach provides access to information about the gas uptake capacity, surface area and accessible pore volume of each individual pore, as well as the impact of pore geometry on the uptake and distribution of different adsorbates within the pores.
“By understanding the realtime adsorption behavior of molecules at the level of the pores that form the material, rather than the whole material, we will be able to apply this technology to develop a new high-capacity storage material,” says professor Kang.
https://www.chemengonline.com/powerful-tool-analyze-mofs/?printmode=1
KAIST Mechanical Engineering department promotiona..
[Business Korea] KAIST to Hold World’s First ‘AI W..
"The 2018 International AI World Cup Match” will be held for four days from August 20 to 22 at the KAIST main campus in Daejeon.
The world’s first “AI World Cup,” where players use AI technology to utilize their soccer skills and compete with each other, will be held Aug. 20-22 in South Korea.
On August 15, KAIST announced that it is holding the “2018 International AI World Cup Match” for three days from August 20 at the KAIST main campus in Daejeon.
A total of 29 teams from 12 countries around the world are participating, including Google, MIT, Northwestern University, Seoul National University, and KAIST, who each owns the latest AI technology. Game events consist of AI soccer (23 teams), AI game commentary (four teams) and AI reporter (two teams).
In the AI soccer game, 5 AI players who have learned soccer tactics play the first and second half of the game, which are five minutes each, without human control, and try to score a goal.
The qualifying round is run in a tournament format and the final winning team is rewarded ten thousand dollars, while the second and third place team each takes 500 and 2000 dollars.
In the AI game commentary event, AI players analyze and explain an AI soccer game, and the winning team is selected based on the use of accurate expressions for players’ movements, game forecasting comments using the number of shooting of each player, etc.
In the AI reporter event, AI players write news reports based on the AI soccer game play and the AI game commentaries, and the team that wrote an honest and informative article based on truth will win.
On August 22, KAIST plans to have a time to introduce methods used by developers to create this AI game, developmental procedures, and game strategies.
Also during the match, “International AI Workshop” will open, where world-renowned AI experts, like Oliver Mitchell, CEO of a Swiss robot simulator maker, Cyberbotics, and Professor Eric Matson from Purdue University, will give lectures and hold panel discussion.
[THE DONG-A ILBO Logo] Kaist to host World’s first..
The world’s first Artificial Intelligence (AI) World Cup Games, a competition among football algorithms developed by countries around the world, will be held in Korea.
KAIST announced Wednesday plans to host the 2018 AI World Cup Competition at its home campus in Daejeon for three days starting on August 20. Twenty nine teams from twelve countries including the United States, China, France and Brazil will participate in the competition, which will be divided into three fields: football play, commentary and sports article writing. The number of participating teams is 23, four and two, respectively in each field.
Football teams consist of five AI football players who have learned the tactics of the sport. Play time will be 10 minutes, five minutes dedicated to the first and second half. Similar to computer games, the competition will be played out on a screen, but will not be entirely controlled by humans. The semi-final round, the 3rd and 4th place playoff and the final match will be open to the public on next Wednesday. Those who wish to attend can apply at aiworldcup.com by Sunday.
Prize money will be offered: one million dollars for the final winner; and 5,000 and 2,000 dollars for second and third place in the football play competition. Winners in football commentary and article writing will be given 5,000 dollars respectively.
kyungeun＠donga.com
[Biz ＆ Tech] Scientists develop platform to remote..
By Lee Min-hyung
A team of scientists developed have a software platform to remotely control a string of mobile devices, which will allow users to keep track of in-app information on any smart devices, the Korea Institute of Science and Technology (KAIST) said Friday.
The team led by KAIST professor Shin In-sik said it developed the mobile platform technology, called Mobile Plus. It enables a smartphone app to share its data and functions with any other devices and vice versa.
The primary goal of Mobile Plus is to enable unmodified applications to share functionalities across devices, KAIST said. With Mobile Plus, such in-app functionalities as login and payment can also be shared among devices.
"The mobile software is expected to serve as a hub to interconnect various smart devices more conveniently, as users are not hassled to install the same apps in each device," a KAIST official said.
For example, parents can use Mobile Plus to monitor payment records in their kids' smartphones.
The research team took advantage of "remote procedure call" technology, which removes the need for developers to modify app code when sharing app functions across devices.
"Users can also continue using the same app in multiple devices without buying or installing it on each device," the official said. "The researchers are now focusing on promoting the software to widen its user base. Toward that end, we encourage Google to adopt the platform so more users can benefit from the technology."
The research team was upbeat for its growth potential, as the technology can be widely applied to emerging tech areas such as smart homes and smart vehicles.
Shin said the Mobile Plus technology will generate synergy when combined with the two rising industries whose building block is to seamlessly connect a number of devices with real-time data.
"With smartphones serving as a hub, the technology can provide novel user experiences, widely used for smart appliances and car infotainment systems," Shin said.
The latest feat was introduced at this year's MobiSys Conference in the United States in June.
The research team said it is has succeeded in demonstrating that a Mobile Plus prototype does not slow down performance of interlocked devices unless data transfer is large. The cross-device sharing platform is expected to boost development of creative and useful apps down the road, it said.
The KAIST researchers applied for a patent here, and the team is seeking to raise its global profile by teaming up with overseas software players.
[Geek] Korean Students Invited to Build AI Soccer ..
● https://www.geek.com/tech/korean-students-invited-to-build-ai-soccer-players-1707322
We know artificial intelligence can outsmart humans at an abstract strategy board game. But can it bend it like Beckham?
The Korea Advanced Institute of Science and Technology (KAIST) this week announced an upcoming AI soccer tournament for university students.
Scheduled for November, the competition will include three machine-powered aspects: gameplay, analysis, and reporting, according to The Korea Times.
Teams of five artificial players?four outfielders, one goalkeeper?will face off against each other in a series of preliminary matches. The final winner is set to be crowned on Dec. 1.
KAIST is going full-ESPN, though, with the introduction of a game analysis contest, in which the neural network that creates “the most accurate … commentary” during matches wins a prize. The same goes for the AI reporter that pens the best post-match results “in a news-writing format,” the Times said.
This fall’s event is a world first, according to KAIST, which encourages all local college and graduate school students to participate (applications are open through September).
Famous for running an annual international robot soccer competition for the public since the mid-’90s, the academy is now turning its attention the next generation of creators.
And assuming all goes well, the Institute promised to invite foreign clubs to next year’s tourney.
“Overseas teams will be able to participate in the AI [soccer] matches next year, and we expect the tournament to become an internationally renowned tech event in the future,” computer engineering professor Kim Jong-hwan, president of KAIST’s AI World Cup Committee, told The Korea Times.
The original International Micro Robot World Cup Soccer Tournament (MIROSOT)?now formally called RoboCup?was born in KAIST’s Robot Intelligence Technology Lab in 1995. An American team from Newton Labs won the first competition, held in Taejon, Korea, in November 1996.
The Federation of International Robot-soccer Association (FIRA) was established two years later, just ahead of 1998’s International Robot Olympiad Committee (IROC), formed for the World Robot Olympiad.
[Biz＆Tech] KAIST to hold AI football tournament
By Lee Min-hyung
The Korea Advanced Institute of Science and Technology (KAIST) said it will hold an artificial intelligence (AI) football tournament using an online simulation framework in November.
The nation's leading technology institute said Tuesday that it will hold three AI-powered events football matches, game analysis and post-match news writing.
To be specific, each team will consist of five players for the AI football matches. For the game analysis competition, those who create the most accurate analysis and commentary during the matches will win a prize. The AI reporter event participants will have to write post-match results in a news-writing format.
"The football matches will be conducted in a five on five tournament. Each of the five AI-programmed players in such positions as striker, defender and goalkeeper will compete with their counterparts," a KAIST official said.
The university will hold preliminary matches in November, with the final winner set to be announced on Dec. 1. Any college or graduate school student can apply for the tournament through the end of September.
The AI-driven football tournament is a world first, according to KAIST. The university will invite foreign teams beginning next year.
The institute is renowned for running an international robot football competition since 1996. The rise of AI and big data allowed KAIST to hold the new event this year.
KAIST established what it calls the AI World Cup Committee last month, with professors from its major departments such as electronic engineering and industrial engineering playing a key role to prepare for the matches.
KAIST said the event comes as part of its efforts to be in line with the upcoming Fourth Industrial Revolution by converging its technological expertise in such areas as the bio, nano, info-tech, robotics and AI fields.
"Overseas teams will be able to participate in the AI football matches next year, and we expect the tournament to become an internationally-renowned tech event in the future," said Kim Jong-hwan, the president of the committee, who also serves as a professor of computer engineering at KAIST.
● http://www.koreatimes.co.kr/www/tech/2017/07/133_232786.html
[Aju Business Daily] Public research university KA..
South Korea's top public research university will host an artificial intelligence world cup among undergraduate and postgraduate students in November. The Korea Advanced Institute of Science and Technology (KAIST) said it would co-host the 24-day "AI world Cup 2017" on November 1 with its Machine Intelligence and Robotics Multi-Sponsored Research and Education Platform.
Each team will compete in a simulated football game, using skills its AI program has learned. AI will be evaluated over commentary of the matches. Robot professionals will be tested over news articles they write after analyzing the games.
Students at South Korean universities and post-university classes are eligible but KAIST will open the door for foreign students next year.
Park Sae-jin = swatchsjp＠ajunews.com
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● http://www.ajudaily.com/view/20170711171543103
