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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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Park, S.O. (author), Moon, J.B. (author), Lee, Y.G. (author), Kim, C.G. (author), Bhowmik, S. (author)It is widely known that materials exposed to the severe low earth orbit (LEO) environment undergo degradations. For the evaluation of fiber Bragg grating (FBG) sensors in the LEO environment, the reflective spectrum change and the Bragg wavelength shift of FBG sensor were measured during aging cycles simulating the LEO environment. The LEO...conference paper 2008
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Kihm, H.W. (author), Lee, K.G. (author), Seo, M.A. (author), Ahn, K.J. (author), Adam, A.J.L. (author), Kang, J.H. (author), Park, Q.H. (author), Planken, P.C.M. (author), Kim, D.S. (author)We study the dielectric constant dependent diffraction phenomena of single slit apertures, both theoretically and experimentally. We experimentally simulate perfect metal and real metal cases by investigating subwavelength diffraction by a single slit, both in nano-optical and in terahertz regimes, keeping the slit-width/wavelength ratio...conference paper 2008
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Park, Seongyeon (author), Kim, Hajin (author), Ahmad, T. (author), Ahmed, N. (author), Al-Ars, Z. (author), Hofstee, H.P. (author), Kim, Youngsok (author), Lee, Jinho (author)Sequence alignment forms an important backbone in many sequencing applications. A commonly used strategy for sequence alignment is an approximate string matching with a two-dimensional dynamic programming approach. Although some prior work has been conducted on GPU acceleration of a sequence alignment, we identify several shortcomings that limit...conference paper 2022
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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 μm<sup>2</sup>...conference paper 2019
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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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Lee, W. (author), Kim, Jin-Gyun (author), Molenbroek, J.F.M. (author), Goossens, R.H.M. (author), You, Heecheon (author)A 3D head and face scan data can be usefully applied in the ergonomic design of a wearable product such as an oxygen mask or a virtual reality (VR) headset to support the safety as well as comfort for a certain amount of a target population. This study is aimed to develop analysis and design methods of an ergonomic facial wearable products (e.g....conference paper 2020
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Prokhorov, V.G. (author), Kaminsky, G.G. (author), Kim, J.M. (author), Eom, T.W. (author), Park, J.S. (author), Lee, Y.P. (author), Svetchnikov, V.L. (author), Levtchenko, G.G. (author), Nikolaenko, Y.M. (author), Khokhlov, V.A. (author)Nd0.52Sr0.48MnO3 films of various thicknesses have been prepared by dc magnetron sputtering on single crystal LaAlO3 (001) substrates. Reducing the film thickness leads to a significant suppression of ferromagnetic (FM) ordering and the Curie point falls below the antiferromagnetic (AFM) transition temperature. When this occurs, a huge rise of...journal article 2011
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Prokhorov, V.G. (author), Kaminsky, G.G. (author), Kim, J.M. (author), Yoo, Y.J. (author), Lee, Y.P. (author), Svetchnikov, V.L. (author), Levchenko, G.G. (author), Nikolaenko, Y.M. (author), Khokhlov, V.A. (author)Microstructure and magnetic properties of BiMnO3 and BiFe0.5Mn0.5O3 films, prepared by rf magnetron sputtering on LaAlO3 (001) single-crystalline substrate, are investigated. The selected-area electron diffraction analysis allows us to identify the crystal structure of the BiMnO3 film as orthorhombic, while the BiFe0.5Mn0.5O3 film has a...journal article 2012
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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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Prokhorov, V.G. (author), Hyun, Y.H. (author), Park, J.S. (author), Kim, J.B. (author), Kim, G.H. (author), Lee, Y.S. (author), Lee, Y.P. (author), Svetchnikov, V.L. (author)The microstructural and magnetic properties of amorphous, nanoclustered, and self-organized bilayer Nd0.5Sr0.5MnO3 films, prepared by rf magnetron sputtering, are investigated. The amorphous film was found to be a typical paramagnet with free motion of the individual Mn spins, and the magnetic properties are well described on the basis of the...journal article 2008
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- Ahn, K.J. (author), Lee, K.G. (author), Kihm, H.W. (author), Seo, M.A. (author), Adam, A.J.L. (author), Planken, P.C.M. (author), Kim, D.S. (author) journal article 2008
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- Lee, Y.P. (author), Park, S.Y. (author), Hyun, Y.H. (author), Kim, J.B. (author), Prokhorov, V.G. (author), Komashko, V.A. (author), Svetchnikov, V.L. (author) journal article 2006
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Prokhorov, V.G. (author), Kaminsky, G.G. (author), Kim, J.M. (author), Eom, T.W. (author), Park, J.S. (author), Lee, Y.P. (author), Svetchnikov, V.L. (author), Levtchenko, G.G. (author), Nikolaenko, Y.M. (author), Khokhlov, V.A. (author)X-ray diffraction analysis and high-resolution electron microscopy of BiFeO3 films prepared by dc magnetron sputtering on single-crystal LaAlO3 (001) substrates reveal that the films have a highly c-oriented orthorhombic crystalline structure. The magnetic properties of the BiFeO3 films are typical of ensembles of interacting superparamagnetic...journal article 2011
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Seo, M.A. (author), Adam, A.J.L. (author), Kang, J.H. (author), Lee, J.W. (author), Jeoung, S.C. (author), Park, Q.H. (author), Planken, P.C.M. (author), Kim, D.S. (author)We present 2D measurements of the full THz electric field behind a sample consisting of multiple slits in a metal foil. Our measurements, which have a sub-wavelength spatial, and a sub-period temporal resolution, reveal electric field lines, electric field vortices and saddle points. From our measurements we are able to reconstruct the magnetic...journal article 2007
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Prokhorov, V.G. (author), Kaminsky, G.G. (author), Kim, J.M. (author), Eom, T.W. (author), Park, J.S. (author), Lee, Y.P. (author), Svetchnikov, V.L. (author), Levtchenko, G.G. (author), Paschenko, A.V. (author), Medvedev, Y.V. (author), Nikolaenko, Y.M. (author), Bukin, G.V. (author), Khokhlov, V.A. (author)Nd0.52Sr0.48MnO3 films have been fabricated by dc magnetron sputtering on single-crystal LaAlO3 (001) and SrTiO3 (011) substrates with additional annealing to relax the lattice strain. Although the Nd0.52Sr0.48MnO3 films were deposited simultaneously on different substrates at the same deposition rate, they differ in thickness by a factor of ? ....journal article 2011
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Lee, J.W. (author), Seo, M.A. (author), Park, D.J. (author), Kim, D.S. (author), Jeoung, S.C. (author), Lienau, C. (author), Park, Q.H. (author), Planken, P.C.M. (author)Terahertz transmission filters have been manufactured by perforating metal films with various geometric shapes using femtosecond laser machining. Two dimensional arrays of square, circular, rectangular, cshaped, and epsilon-shaped holes all support over 99% transmission at specific frequencies determined by geometric shape, symmetry,...journal article 2006
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Seo, M.A. (author), Adam, A.J.L. (author), Kang, J.H. (author), Lee, J.W. (author), Ahn, K.J. (author), Park, Q.H. (author), Planken, P.C.M. (author), Kim, D.S. (author)We performed terahertz near-field experiments on single rectangular holes with various lengths grown on an electro-optic crystal substrate with ?/100 resolution. We find that the near-field amplitude becomes proportionally larger as the rectangle becomes narrower, strongly suggesting that a constant energy passes through even for a very narrow...journal article 2008
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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, Jae Jin (author), Kim, S.H. (author), Lee, Keon Ah (author), Chuon, Kimleng (author), Jung, Kwang Hwan (author), Kim, Doseok (author)DNA cyclization assay together with single-molecule FRET was employed to monitor protein-mediated bending of a short dsDNA (~ 100 bp). This method provides a simple and easy way to monitor the structural change of DNA in real-time without necessitating prior knowledge of the molecular structures for the optimal dye-labeling. This assay was...journal article 2021