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Lee, Yongtae (author), Choi, Woojun (author), Kim, Taewoong (author), Song, Seungwoo (author), Makinwa, K.A.A. (author), Chae, Youngcheol (author)This letter describes a compact resistor-based temperature sensor intended for the thermal monitoring of microprocessors and DRAMs. It consists of an RC poly phase filter (PPF) that is read out by a frequency-locked loop (FLL) based on a dual zero-crossing (ZC) detection scheme. The sensor, fabricated in 65-nm CMOS, occupies 5800 μ m2 and...journal article 2019
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Kim, Jinhyun (author), Lee, Sahng Ha (author), Tieves, F. (author), Paul, C.E. (author), Hollmann, F. (author), Park, Chan Beum (author)Nicotinamide adenine dinucleotide (NAD<sup>+</sup>) is a key redox compound in all living cells responsible for energy transduction, genomic integrity, life-span extension, and neuromodulation. Here, we report a new function of NAD<sup>+</sup> as a molecular photocatalyst in addition to the biological roles. Our spectroscopic and...journal article 2019
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Lee, Ji Sun (author), Yoon, Ji Woong (author), Mileo, Paulo G.M. (author), Cho, Kyung Ho (author), Park, Jaedeuk (author), Kim, Kiwoong (author), Kim, Hyungjun (author), de Lange, M.F. (author), Kapteijn, F. (author)The development of new water adsorbents that are hydrothermally stable and can operate more efficiently than existing materials is essential for the advancement of water adsorption-driven chillers. Most of the existing benchmark materials and related systems in this field suffer from clear limitations that must be overcome to meet global...journal article 2019
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Kim, Sangmin (author), Woo, Seung Gyun (author), Lee, J. (author), Lee, Dae Hee (author), Hwang, Seokhwan (author)Anaerobic digestion (AD) of secondary sludge is a rate-limiting step due to the bacterial cell wall. In this study, experiments were performed to characterize secondary sludges from three wastewater treatment plants (WWTPs), and to investigate the feasibility of using bacteriophage lysozymes to speed up AD by accelerating the degradation of...journal article 2019
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Agarwal, Girish (author), Allen, Roland E. (author), Bezděková, Iva (author), Boyd, Robert W. (author), Chen, Goong (author), Hanson, R. (author), Hawthorne, Dean L. (author), Hemmer, Philip (author), Kim, Moochan B. (author), Kocharovskaya, Olga (author), Lee, D. (author), Lidström, Sebastian K. (author), Lidström, Suzy (author), Losert, Harald (author), Maier, Helmut (author), Neuberger, John W. (author), Padgett, Miles J. (author), Raizen, Mark (author), Rajendran, Surjeet (author), Rasel, Ernst (author), Schleich, Wolfgang P. (author), Scully, Marlan O. (author), Shchedrin, Gavriil (author), Shvets, Gennady (author), Sokolov, Alexei (author), Svidzinsky, Anatoly (author), Walsworth, Ronald L. (author), Weiss, Rainer (author), Wilczek, Frank (author), Willner, Alan E. (author), Yablonovich, Eli (author), Zheludev, Nikolay (author)The Winter Colloquium on the Physics of Quantum Electronics (PQE) has been a seminal force in quantum optics and related areas since 1971. It is rather mind-boggling to recognize how the concepts presented at these conferences have transformed scientific understanding and human society. In January 2017, the participants of PQE were asked to...journal article 2018
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Kim, Jinhyun (author), Lee, S.H. (author), Tieves, F. (author), Choi, Da Som (author), Hollmann, F. (author), Paul, C.E. (author), Park, Chan Beum (author)Light-driven activation of redox enzymes is an emerging route for sustainable chemical synthesis. Among redox enzymes, the family of Old Yellow Enzyme (OYE) dependent on the nicotinamide adenine dinucleotide cofactor (NADH) catalyzes the stereoselective reduction of α,β-unsaturated hydrocarbons. Here, we report OYE-catalyzed asymmetric...journal article 2018
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Lee, W. (author), Yang, Xiaopeng (author), Jung, Daehen (author), Park, Seikwon (author), Kim, Heeeun (author), You, Heecheon (author)A revised pilot oxygen mask design was developed for better fit to the Korean Air Force pilots’ faces. The present study compared an existing pilot oxygen mask and a prototype of the revised mask design with 88 Korean Air Force pilots in terms of subjective discomfort, facial contact pressure, and slip distance on the face in high gravity....journal article 2018
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Lee, S. (author), Kim, Younguk (author), Eisemann, E. (author)This article presents an iterative backward-warping technique and its applications. It predictively synthesizes depth buffers for novel views. Our solution is based on a fixed-point iteration that converges quickly in practice. Unlike the previous techniques, our solution is a pure backward warping without using bidirectional sources. To...journal article 2018
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Choi, Woojun (author), Lee, Yongtae (author), Kim, Seonhong (author), Lee, Sanghoon (author), Jang, Jieun (author), Chun, Junhyun (author), Makinwa, K.A.A. (author), Chae, Youngcheol (author)This paper presents a compact resistor-based CMOS temperature sensor intended for dense thermal monitoring. It is based on an RC poly-phase filter (PPF), whose temperature-dependent phase shift is read out by a frequency-locked loop (FLL). The PPF's phase shift is determined by a zero-crossing (ZC) detector, allowing the rest of the FLL to be...journal article 2018
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Choi, Woojun (author), Lee, Yong-Tae (author), Kim, Seonhong (author), Lee, Sanghoon (author), Jang, Jieun (author), Chun, Junhyun (author), Makinwa, K.A.A. (author), Chae, Youngcheol (author)In microprocessors and DRAMs, on-chip temperature sensors are essential components, ensuring reliability by monitoring thermal gradients and hot spots. Such sensors must be as small as possible, since multiple sensors are required for dense thermal monitoring. However, conventional BJT-based temperature sensors are not compatible with the sub...conference paper 2018
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Nechemia-Arbely, Yael (author), Fachinetti, Daniele (author), Miga, Karen H. (author), Sekulic, Nikolina (author), Soni, G.V. (author), Kim, Dong Hyun (author), Wong, Adeline K. (author), Lee, Ah Young (author), Nguyen, Kristen (author), Dekker, C. (author), Ren, Bing (author), Black, Ben E. (author), Cleveland, Don W. (author)Chromatin assembled with centromere protein A (CENP-A) is the epigenetic mark of centromere identity. Using new reference models, we now identify sites of CENP-A and histone H3.1 binding within the megabase, α-satellite repeat-containing centromeres of 23 human chromosomes. The overwhelming majority (97%) of α-satellite DNA is found to be...journal article 2017
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- Lee, Jae-Hoon (author), Kim, Younghwan (author) journal article 2017
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Son, Eun Jin (author), Lee, Sahng Ha (author), Kuk, Su Keun (author), Pesic, M. (author), Choi, Da Som (author), Ko, Jong Wan (author), Kim, Kayoung (author), Hollmann, F. (author), Park, Chan Beum (author)In green plants, solar-powered electrons are transferred through sophistically arranged photosystems and are subsequently channelled into the Calvin cycle to generate chemical energy. Inspired by the natural photosynthetic scheme, a photoelectrochemical cell (PEC) is constructed configured with protonated graphitic carbon nitride (p-g-C<sub>3...journal article 2017
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- Park, Dong-Min. (author), Kim, Yonghwan (author), Seo, Min-Guk (author), Lee, Jaehoon (author) journal article 2016
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- Kim, S. (author), Lee, W. (author), Lee, B. (author), Choi, Y. (author), Lee, J. (author), Jung, K. (author), You, H. (author) journal article 2015
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Lee, W. (author), Lee, B. (author), Kim, S. (author), Jung, H. (author), Jeon, E. (author), Choi, T. (author), You, H. (author)3D scanning technology has derived great opportunities for ergonomic product designs. This paper is aimed to introduce various research cases and methods based on 3D scanning have conducted by an ergonomics laboratory in South Korea. Sizing systems and representative 3D models developed on anthropometric measurements and 3D scan images with...conference paper 2015
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- Lee, Jeung-Hoon (author), Park, Hyoung-Gil (author), Kim, Jin-Hak (author), Lee, Kyung-Jun (author), Seo, Jong-Soo (author) journal article 2014
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Dynamic behavior and heat transfer characteristics of impinging droplets onto high temperature plateLee, C.H. (author), Kim, D.Y. (author), Kim, H.D. (author), Kim, K.C. (author)Dynamic behaviour and heat transfer characteristics of impinging droplets on a hot surface were studied experimentally. De-ionized water droplet was made through a 31G injection needle and the droplet size was 2 mm. A sapphire plate was heated up to 300ºC by a hotplate. A high speed camera was used for visualization, and the frame rate was 4000...conference paper 2013
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Choi, Y.S. (author), Seo, K.W. (author), Lee, S.J. (author), Kim, S.H. (author), Yun, J.H. (author)The flows in a naturally evaporating liquid droplet confined by two flat plates were investigated experimentally. A diluted sodium-chloride (NaCl) aqueous solution was used to form the confined droplets. The evaporation of water at the free surface of the droplet built up a concentration gradient inside the solution, which induced a natural...conference paper 2013
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Kim, Taik-Jin (author), Lee, Taik-Jin (author), Lee, Young-Ho (author)ISO19152 international standard, led by ISO/TC211 in the meantime, has been published as an international standard at the end of 2012. It does not necessarily mean a simple document published. The FIG having the initiative in international standards-based technology is actively promoting overseas business in developing countries through...conference paper 2013