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A Breakthrough for Cardiac Monitoring: Portable Smart Patch Makes It Possible for Real-time Observation of Heart Movement
Newly invented device makes the monitoring easier and convenient.
Professor Hoi-Jun Yoo of KAIST, Department of Electrical Engineering, said that his research team has invented a smart patch for cardiac monitoring, the first of its kind in the world. Adhesive and can be applied directly to chest in human body, the patch is embedded with a built-in high performance semiconductor integrated circuit (IC), called Healthcare IC, and with twenty five electrodes formed on the patch’s surface.
The 25-electrodes, with a capability of creating various configurations, can detect cardiac contractions and relaxations and collect electrocardiogram (ECG) signals. The Healthcare IC monitors ECG signals and sends the information to a portable data terminal like mobile phones, making it possible for a convenient, easy check up on cardiac observations.
The key technologies used for the patch are the Healthcare IC that measures cardiovascular impedance and ECG signals, and the electronic circuit board made of four layers of fabric, between which electrodes, wireless antenna, circuit board, and flexible battery are installed. With the P-FCB (Planar Fashionable Circuit Board) technology, the research team explained, electrodes and a circuit board are directly stacked into the fabric. Additionally, the Healthcare IC (size: 5mm x 5mm), which has components of electrode control unit, ECG and cardiovascular resistance detection unit, data compression unit, Static Random Access Memory (SRAM), and wireless transmitter receiver, is attached on the fabric. The Healthcare IC is operated by an ultra-low electrical power.
Like a medicated patch commonly used to relieve arthritis pains, the surface of smart patch is adhesive so that people can carry it around without much hassle. A finished product will be 15cm x 15 cm in size and 1mm high in thickness. The Healthcare IC can measure cardiovascular impedance variances with less than 0.81% distortion in 16 different configurations through differential current injectors and reconfigurable high sensitivity detection circuitry.
“The patch will be ideal for patients who suffer a chronic heart disease and need to receive a continuous care for their condition. Once commercialized, the patch will allow the patients to conduct a self-diagnosis at anytime and anywhere,” said Yan Long, a member of the research team.
There has been a continuously growing demand worldwide since 2000 for the development of technology that provides a suitable healthcare management to patients with a chronic heart disease (e.g., cardiovascular problems), but most of the technology developed today are only limited to monitoring electrical signals of heart activity. Cardiovascular monitors, commonly used at many of healthcare places nowadays, are too bulky to use and give uncomfortable feelings to patients when applied. Besides, the current monitors are connected to an electrical line for power supply, and they are unable to have a low power communication with an outdoor communication gadget, thus unavailable for wide use.
Professor Yoo gave his presentation on this new invention at an international conference, International Solid-State Circuits Conference, held on February 8-10 in San Francisco. The subject of his presentation was “A 3.9mW 25-electorde Reconfigurable Thoracic Impedance/ECG SoC with Body-Channel Transponder.”
(Picture 1) Structure of Smart Patch
(Picture 2) Smart patch when applied onto human body
(Picture 3) Data received from smart patch
(Picture 4) Healthcare IC
2010.02.17 View 13721 -
KAIST to Join Forces with Northwestern School of Law in MIP Program
KAIST has agreed to collaborate in its Master of Intellectual Property (MIP) program with Northwestern University School of Law, the university authorities said on Wednesday (Nov. 11).
KAIST President Nam-Pyo Suh and Northwestern Univ. School of Law Dean David Van Zandt signed a memorandum of understanding for the establishment of the certificate and degree programs of the Anglo-American law in February 2010, at the president"s office Wednesday.
The latest agreement represents an expansion of the existing KAIST-Northwestern Executive LLM program that the two schools have successfully operated for the past eight years. It is aimed at boosting KAIST"s global intellectual property capabilities at a time when the strategic management of intellectual properties and capabilities to deal with international intellectual property disputes are gaining growing importance.
The newly-established two-year, six-semester program is designed to offer a certificate program in the Anglo-American and intellectual property laws to make students better armed with legal knowledge in a competitive global environment.
Northwestern University School of Law is regarded as one of the top law schools in the United States. American law schools are better positioned than any other institutions to prepare students to move from domestic to international practice in today"s complex global economy.
LLM is Latin for Legum Magister, signifying Master of Laws
. course and neto ba ... signing an agreement to run a joint masters degree program at the KAIST campus in Seou
2009.11.19 View 11967 -
KAIST's Mobile Harbor Program Attracts Two Corporate Investments
KAIST-developed Mobile Harbor Program has attracted investments from Korea"s two big-name industrial corporations, university authorities said on Monday (Oct. 19).
KAIST has recently signed an agreement with Hyundai Wia Corp., a machine parts supplier, to collaborate in the researches of the mobile harbor programs and commercialization. Under the agreement, Hyundai WIA will invest a total of 7.5 billion won in the program for two years starting from January 2010.
KAIST has also received a letter of intent from the Daewoo Shipbuilding & Marine Engineering Co. on investing 20 billion won in the commercialization of the project.
The Mobile Harbor Program is designed to create mobile units that can go out to the ship which are anchored off-shore and unload the cargo and take it to where it is needed. It is aimed at overcoming the shortcomings of the current maritime container transportation systems. Container ships are getting larger and larger, requiring deep waters, large and complex loading and unloading systems, and major investments in facilities.
Prof. Byung-Man Kwak, leader of the program"s R&D team, said: "With the investment from two global industrial companies, the program has gained a crucial momentum. The development of the program is expected to help Korea to become a global leader in marine transportation and maintain its supremacy in shipbuilding."
2009.10.20 View 14358 -
Professor Jong Hyun Kim receives two awards from ASME
Professor Jong Hyun Kim, Bently & Muszynska Endowed Chair Professor in the Dept. of Nuclear and Quantum Engineering, KAIST, has recently received Dedicated Service Award from the American Society of Mechanical Engineers (ASME). The award honors unusual dedicated voluntary service to ASME marked by outstanding performance, demonstrated effective leadership, and prolonged commitment. The award was bestowed on Professor Kim in recognition of his sustained and exemplary service, leadership, and contributions to ASME. While chairing the Heat Transfer Division of ASME, Professor Kim promoted industrial participation, broadened international exchanges, and spearheaded the initiative to institute the web-based conference organization that later became the standard tool for organizing all ASME conferences.
ASME has also announced that Professor Kim was selected to receive the Heat Transfer Memorial Award and will be honored at its winter annual meeting this November. This award is bestowed on individuals who have made outstanding contributions to the field of heat transfer through teaching, research, practice and design, or a combination of such activities. Professor Kim was selected in recognition of his exceptional and impactful contributions to industry through applied research and innovative applications of science, art, and technology of heat transfer and thermal engineering. In particular, he tackled some of the toughest critical technical issues of serious safety implications in nuclear industry. The results of his research over the past 35 years produced tangible and substantial economic benefits to energy and nuclear industry that are conservatively estimated to be in the range of a few hundred million dollars of cost savings.
Professor Kim is a Fellow of ASME. ASME is the world’s largest professional society for mechanical engineers with over 100,000 members.
2009.09.01 View 10890 -
Transparent Antenna for Automobile Developed
A research team led by Prof. Jae-Woo Park of the School of Electrical Engineering & Computer Science, KAIST, developed a transparent antenna for the next-generation automobiles, university authorities said on Monday (Aug. 17).
The development was made possible through joint researches with the Hyundai-Kia Automotive Group; Winncom, a car antenna manufacturer; and a group of researchers led by Han-Ki Kim of the Department of Display Materials Engineering at Kyung Hee University in Seoul.
The transparent antennas were developed in two kinds -- one for the HSDPA (High-Speed Downlink Packet Access), a new protocol for mobile telephone data transmission, and the other for transmitting and receiving radio wave for emergency call.
Using the transparent electrically conductive film formation technology, the transparent antennas are to be mounted on the windshield of a vehicle.
"The development of transparent antenna represents a step forward for the advancement of the next-generation automotive electronic technology," said Seong-woo Kim, a senior researcher at the Hyundai-Kia Group.
2009.08.18 View 12350 -
KAIST to hold International Workshop on Flexible Displays
The 2009 KAIST International Workshop on Flexible Displays will take place at the Electrical Engineering Building on June 25, university sources said on Tuesday (June 23).
The workshop organized by the Center for Advanced Flexible Display Convergence (CAFDC) will explore the status and future vision of flexible and transparent plasma displays, which are among the key technologies for the development of the next-generation displays. There will be also discussions about technologies to realize the large-scale flexible and transparent display which is regarded as the display of the future.
Among the speakers are some of the most prominent figures in the field. Gary Eden from University of Illinois, Prof. Kunihide Tachibana from Kyoto University, and Carol Wedding, the president of Imaging Systems Tech., USA and several other well-known professors and engineers will participate in the workshop.
Professor Kyung-Cheol Choi, CAFDC chair, said: "The workshop will provide an excellent opportunity to examine the flexible and transparent plasma display technologies. It will also be a good chance to explore large-scale flexible and transparent displays from various technical viewpoints."
2009.06.24 View 16483
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Prof. Cho's Team Awarded Best Paper Prize by IEEE
A team led by Prof. Seong-Hwan Cho of the School of Electrical Engineering and Computer Science, KAIST, won the 2009 Guillemin-Cauer Best Paper Award for their paper published in the IEEE Transactions on Circuits and Systems Journal last May, university authorities said on Thursday (June 4).
The team"s paper was entitled "A Time-based Bandpass ADC Using Time-Interleaved Voltage-Controlled Oscillators." The prize is given to a paper regarded as the best among about 350 papers published in the prestigious journal in the circuit theory area. Co-recipients of the award are Young-Gyu Yoon, Jae-Wook Kim and Tae-Kwang Jang. The award was presented at the annual 2009 International Symposium for Circuits and Systems in Taipei, Taiwan, on May 26.
The Institute of Electrical and Electronics Engineers or IEEE is an international non-profit, professional organization for the advancement of technology related to electricity. The New York-based organization has more than 365,000 members in about 150 countries making it the largest technical professional organization in the world.
2009.06.05 View 12761 -
Five Prominent Figures Appointed as KAIST Admission Officers
KAIST appointed five celebrated figures including Seung Park, former Bank of Korea governor, as admission officers on May 15, university authorities said on Thursday (May 14).
The four others are Moon-Soul Chung, founder and former CEO of Mirae Corp., who is well known as the first-generation venture entrepreneur in Korea; In-ho Lee, former Korean ambassador to Russia; Myung-ja Kim, former minister of environment; and former KAIST President Chang-sun Hong who was a National Assemblyman.
Their appointment is designed to guarantee transparency and fairness in a new undergraduate admission system. KAIST has decided to select. 150 freshmen from among 1,000 students recommended by the principals of as many general high schools across the country. The five special admission officers will participate in interviewing the recommended students. The new screening system which is introduced to broaden the field of applicants to graduates from schools other than science high schools will be implemented from the next school year.
The newly appointed admission officers will have orientation sessions on May 28-29 and then visit high schools nationwide to interview the recommended students in June and July.
KAIST set off a new trend in the admission process when President Nam-Pyo Suh announced in March that 150 students, or about 16 percent of the freshmen enrollment, would be recruited from regular high schools solely on the basis of their principals" recommendation and interview results in March.
Award-winning records at math or science competitions will not be put into account in admissions to prevent after-school tutoring aimed at winning such contests. Unveiling the new admission plan, President Suh said, "We expect the principals to recommend students with special talents or potential rather than high grades."
Established under a special law in 1971, KAIST is given full liberty to recruit freshmen students in whatever method it deems right, without being required to use the scholastic ability test scores of applicants as the basic criteria.
The socially respected admission officers will single out 300 from among the 1,000 recommended students for further review. Out of the 300, the final 150 students will be chosen through in-depth interviews by KAIST professors.
"Through years of receiving principal"s recommendations and judging the academic records of the recommended students at KAIST, we can accumulate a database on high schools nationwide. If a student from a certain high school turns out to be no good, we might not pick any more student from that school," Suh said.
Over 80 percent of students admitted to KAIST this year were graduates of elite institutions, mostly science high schools. Only 20 percent came from regular high schools. Ten percent of the 150 additional openings for regular high school graduates will be alloted to students from rural areas and another 10 percent to low-income households.
"A certain high school was not able to send even a single student to KAIST for the last 10 years. I"m sure there are talented students in that school. If we give the school a chance, it wil help improve the education environment in this country," Suh said.
2009.05.22 View 11593
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Prof. Cho Identifies Dynamics of Signal Transportation System in Control of Cell Proliferation
KAIST, Jan. 22, 2009 -- A research team led by Prof. Kwang-Hyun Cho of the Department of Bio and Brain Engineering, KAIST, has identified a hidden mechanism of the dynamic behavior of signal transportation system involved in the control of cell proliferation, university authorities said.
The finding is expected to provide a clue to appropriately controlling the pathway of ERK protein which is known to play a significant role in causing and spreading cancer. The research was featured as the cover paper of the latest online edition of the Journal of Cell Science.
The Ras-Raf-MEK-ERK pathway (or ERK pathway) is an important signal transduction system involved in the control of cell proliferation, survival and differentiation. However, the dynamic regulation of the pathway by positive- and negative-feedback mechanism, in particular the functional role of Raf kinase inhibitor protein (RKIP) are still incompletely understood. RKIP is a physiological endogenous inhibitor of MEK phosphorylation by Raf kinases, but also participates in a positive-feedback loop in which ERK can inactivate RKIP.
"We attempted to unearth the hidden dynamics of these feedback mechanisms and to identify the functional role of RKIP through combined efforts of biochemical experiments and computer simulations based on an experimentally validated mechanical model," Prof. Cho was quoted as saying.
2009.02.03 View 11152 -
Prof. Seong Publishes English Book on Reliability in Digital Control Systems
Prof. Poong-Hyun Seong of Department of Nuclear and Quantum Engineering has recently published an English-language book on reliability and risk issues in large scale safety-critical digital control systems used in complex facilities such as nuclear power plants.
The book entitled “Reliability and Risk Issues in Large Scale Safety-critical Digital Control Systems” is a result of Prof. Seong’s collaboration with some KAIST graduates who used to be under his guidance. The 303-page publication has been published by Springer, one of the world’s leading publishers of academic journals, as part of the Springer Series in Reliability Engineering.
The book consists of four parts; part I deals with issues related to hardware, part II software, part III human factors and finally the last part integrated systems. It can be purchased through some on-line book stores such as Amazon.com.
Prof. Seong served as an editor-in-chief for Nuclear Engineering and Technology (NET), an international journal of Korean Nuclear Society (KNS), from 2003 to 2008. He also worked as a chair of the Human Factors Division (HFD) of American Nuclear Society (ANS) from 2006 to 2007. Prof. Seong is now a commissioner of Korea Nuclear Safety Commission which is the nation’s highest committee on Nuclear Safety.
2008.12.26 View 14996
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KAIST Scientists Creates Transparent Memory Chip
--See-Through Semis Could Revolutionize Displays
A group of KAIST scientists led by Prof. Jae-Woo Park and Koeng-Su Lim has created a working computer chip that is almost completely clear -- the first of its kind.
The new chip, called "transparent resistive random access memory (TRRAM), is similar in type to an existing technology known as complementary metal-oxide semiconductor (CMOS) memory -- common commercial chips that provide the data storage for USB flash drives and other devices. Like CMOS devices, the new chip provides "non-volatile" memory, meaning that it stores digital information without losing data when it is powered off. Unlike CMOS devices, however, the new TRRAM chip is almost completely clear.
The paper on the new technology, entitled "Transparent resistive random access memory and its characteristics for non-volatile resistive switching," was published in the December issue of the Applied Physics Letters (APL), and the American Institute of Physics, the publisher of APL, issued a press release about this breakthrough.
"It is a new milestone of transparent electronic systems," says researcher Jung-Won Seo, who is the first author of the paper. "By integrating TRRAM devices with other transparent electronic components, we can create a totally see-through embedded electronic system."
Technically, TRRAM devices rely upon an existing technology known as resistive random access memory (RRAM), which is already in commercial development for future electronic data storage devices. RRAM is built using metal oxide materials between equally transparent electrodes and substrates.
According to the research team, TRRAM devices are easy to fabricate and may be commercially available in just 3-4 years.
"We are sure that TRRAM will become one of alternative devices to current CMOS-based flash memory in the near future after its reliability is proven and once any manufacturing issues are solved," says Prof. Jae-Woo Park, who is the co-author on the paper. He adds that the new devices have the potential to be manufactured cheaply because any transparent materials can be utilized as substrate and electrode. They also may not require incorporating rare elements such as Indium.
2008.12.17 View 15863 -
Prof. Cho Wins Best Paper Award
KAIST Prof. Nam-Zin Cho of the Department of Nuclear and Quantum Engineering, won the Best Thesis Award in the nuclear reactor physics category at the 2008 Winter Meeting of the American Nuclear Society held on Nov. 9-13 in Reno, Nevada.
His paper, entitled "Thermal Feedback Transient Analysis of a Pebble Fuel Based on the Two-Temperature Homogenized Model," was jointly authored by Hwi Yu and Jong-Un Kim under the guidance of Prof. Cho.
Prof. Cho was elected a fellow of the American Nuclear Society in 2001 and has served as the deputy editor of the Nuclear Science and Engineering, the research journal of the American Nuclear Society, since 1999.
2008.12.09 View 13310