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RISS 인기검색어
- 검색키워드
- 저자 : Samukawa, K. (검색결과 5 건)
- 무료
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Statistical Characterization Fabricated Charge-up Damage Sensor
Samukawa Seiji,Hong, Sang-Jeen The Korean Institute of Electrical and Electronic 2005 Transactions on Electrical and Electronic Material Vol.6 No.3
$SiO_2$ via-hole etching with a high aspect ratio is a key process in fabricating ULSI devices; however, accumulated charge during plasma etching can cause etching stop, micro-loading effects, and charge build-up damage. To alleviate this concern, charge-up damage sensor was fabricated for the ultimate goal of real-time monitoring of accumulated charge. As an effort to reach the ultimate goal, fabricated sensor was used for electrical potential measurements of via holes between two poly-Si electrodes and roughly characterized under various plasma conditions using statistical design of experiment (DOE). The successful identification of potential difference under various plasma conditions not only supports the evidence of potential charge-up damage, but also leads the direction of future study.
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Statistical Characterization Fabricated Charge-up Damage Sensor
Seiji Samukawa,홍상진 한국전기전자재료학회 2005 Transactions on Electrical and Electronic Material Vol.6 No.3
SiO2 via-hole etching with a high aspect ratio is a key process in fabricating ULSI devices; however, accumulated charge during plasma etching can cause etching stop, micro-loading effects, and charge build-up damage. To alleviate this concern, charge-up damage sensor was fabricated for the ultimate goal of real-time monitoring of accumulated charge. As an effort to reach the ultimate goal, fabricated sensor was used for electrical potential measurements of via holes between two poly-Si electrodes and roughly characterized under various plasma conditions using statistical design of experiment (DOE). The successful identification of potential difference under various plasma conditions not only supports the evidence of potential charge-up damage, but also leads the direction of future study.
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Remote Cardiac Rehabilitation With Wearable Devices
Atsuko Nakayama,Noriko Ishii,Mami Mantani,Kazumi Samukawa,Rieko Tsuneta,Megumi Marukawa,Kayoko Ohno,Azusa Yoshida,Emiko Hasegawa,Junko Sakamoto,Kentaro Hori,Shinya Takahashi,Kaoruko Komuro,Takashi Hir 대한심장학회 2023 Korean Circulation Journal Vol.53 No.11
Although cardiac rehabilitation (CR) has been shown to improve exercise tolerance and prognosis in patients with cardiovascular diseases, there remains low participation in outpatient CR. This may be attributed to the patients’ busy schedules and difficulty in visiting the hospital due to distance, cost, avoidance of exercise, and severity of coronary disease. To overcome these challenges, many countries are exploring the possibility of remote CR. Specifically, there is increasing attention on the development of remote CR devices, which allow transmission of vital information to the hospital via a remote CR application linked to a wearable device for telemonitoring by dedicated hospital staff. In addition, remote CR programs can support return to work after hospitalization. Previous studies have demonstrated the effects of remote CR on exercise tolerance. However, the preventive effects of remote CR on cardiac events and mortality remain controversial. Thus, safe and effective remote CR requires exercise risk stratification for each patient, telenursing by skilled staff, and multidisciplinary interventions. Therefore, quality assurance of telenursing and multi-disciplinary interventions will be essential for remote CR. Remote CR may become an important part of cardiac management in the future. However, issues such as cost-effectiveness and insurance coverage still persist.
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STUDIES ON METHIONINE METABOLISM IN THE RUMEN BACTERIA OF GOATS
Muramatsu, T.,Numa, M.,Ueda, Y.,Furuse, M.,Okumura, J.,Samukawa, K. Asian Australasian Association of Animal Productio 1994 Animal Bioscience Vol.7 No.2
The metabolic fate of methionine in rumen bacteria was studied by intraruminal administration of $^{15}N$ and $1-^{13}C$ labeled methionine in goats. Time course changes in isotopic abundance of amino acids in the rumen bacteria were determined with a computer-controlled gas-chromatograph mass spectrometer. The results from the transition of peak isotopic abundance in amino acids indicated that in rumen bacteria the $^{15}N$ or $^{13}C$ isotope in the methionine molecule was transferred rapidly to into bacteria, methionine administered intraruminally may not be retained as it is, but would be converted quickly to other metabolites in the bacteria.
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Surface modification of triboelectric materials by neutral beams
Kim, Wook,Okada, Takeru,Park, Hyun-Woo,Kim, Jihye,Kim, Sungsoo,Kim, Sang-Woo,Samukawa, Seiji,Choi, Dukhyun The Royal Society of Chemistry 2019 Journal of materials chemistry. A, Materials for e Vol.7 No.43
<P>A triboelectric nanogenerator (TENG) can convert mechanical energy from its surroundings into electricity. Surface properties such as surface area and surface potential are important variables for improving triboelectric performance. Thus, surface engineering is a promising technique for enhancing triboelectric performance. In this work, for the first time, we introduce a neutral beam based surface modification for enhancing triboelectric performance. First, we investigate appropriate NB treatment conditions for polydimethylsiloxane (PDMS) and thermoplastic polyurethane (TPU) that are used as the negative and positive triboelectric material, respectively. Secondly, we defined the optimal pairing of NB-treated PDMS and TPU for maximizing output performance. Then, we demonstrated the surface stability of NB-treated TENGs by comparing electrical output performances with plasma-treated TENGs for 3 months. Throughout this work, we showed the effect of NB treatments on the triboelectric performance of the TENG device. We expect that our results can provide a new method for improving performance of TENGs for self-powered systems.</P>
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