http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
마그네트론 코스퍼터링법으로 형성한 SiO<sub>2</sub>/Si 양자점 초격자 구조의 특성
박영빈,김신호,하린,이현주,이정철,배종성,김양도,Park, Young-Bin,Kim, Shin-Ho,Ha, Rin,Lee, Hyun-Ju,Lee, Jung-Chul,Bae, Jong-Seong,Kim, Yang-Do 한국재료학회 2010 한국재료학회지 Vol.20 No.11
Solar cells have been more intensely studied as part of the effort to find alternatives to fossil fuels as power sources. The progression of the first two generations of solar cells has seen a sacrifice of higher efficiency for more economic use of materials. The use of a single junction makes both these types of cells lose power in two major ways: by the non-absorption of incident light of energy below the band gap; and by the dissipation by heat loss of light energy in excess of the band gap. Therefore, multi junction solar cells have been proposed as a solution to this problem. However, the $1^{st}$ and $2^{nd}$ generation solar cells have efficiency limits because a photon makes just one electron-hole pair. Fabrication of all-silicon tandem cells using an Si quantum dot superlattice structure (QD SLS) is one possible suggestion. In this study, an $SiO_x$ matrix system was investigated and analyzed for potential use as an all-silicon multi-junction solar cell. Si quantum dots with a super lattice structure (Si QD SLS) were prepared by alternating deposition of Si rich oxide (SRO; $SiO_x$ (x = 0.8, 1.12)) and $SiO_2$ layers using RF magnetron co-sputtering and subsequent annealing at temperatures between 800 and $1,100^{\circ}C$ under nitrogen ambient. Annealing temperatures and times affected the formation of Si QDs in the SRO film. Fourier transform infrared spectroscopy (FTIR) spectra and x-ray photoelectron spectroscopy (XPS) revealed that nanocrystalline Si QDs started to precipitate after annealing at $1,100^{\circ}C$ for one hour. Transmission electron microscopy (TEM) images clearly showed SRO/$SiO_2$ SLS and Si QDs formation in each 4, 6, and 8 nm SRO layer after annealing at $1,100^{\circ}C$ for two hours. The systematic investigation of precipitation behavior of Si QDs in $SiO_2$ matrices is presented.
열병합 보일러 SCR 장치의 유동 균일화를 위한 최적화 연구
박영빈(Young-Bin Park),장춘만(Choon-Man Jang) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
Selective Catalytic Reduction(SCR) has been used for the reduction of NOX in a steam supply boiler. Recently, the reduction of NOX becomes an important research field because of its negative effect on an environment. Shape optimization of circular poles installed in the chamber, which is located in upstream of a SCR, has been performed using response surface method and three-dimensional Navier-Stokes analysis to enhance gas flow uniformity. Three design parameters, diameter, arranging angle and stretching ratio of circular poles, are considered in the present study. Throughout the shape optimization of a circular pole, gas flow uniformity is successfully increased by decreasing local recirculation flow in a square duct chamber. Recirculation flow observed in the corner of the square duct can be reduced by proper installation of a guide vane or a blunt body. Detailed flow characteristics are also analyzed and discussed.
박영빈(Young-Bin Park) 한국산학기술학회 2017 한국산학기술학회논문지 Vol.18 No.6
이 논문의 목적은 기술혁신의 특징과 그에 따른 파급효과를 알아보는 것이다. 기존의 기술혁신에 대한 연구에서 기술혁신의 특징을 정의하고 분류하는 연구가 많이 진행되었다. 이런 다양한 기술혁신의 특징들 중에서 기술혁신에 대한 의사결정에 영향을 미치는 위험부담(Risk)과 관계되는 특징들을 이 연구에서 사용하였다. 첫 번째는 산업의 관점에서 본 위험부담에 관계되는 특징으로, 과거에 개발했던 기술혁신과의 연관성을 나타내는 산업기술연관성이다. 두 번째는 기업의 관점에서 본 위험부담에 관계되는 특징으로, 기업의 범위에서 과거에 개발했던 분야의 기술혁신과의 연관성을 나타내는 기업기술연관성이다. 세 번째는 시간의 관점에서 본 위험부담에 관계되는 특징으로, 기술혁신이 개발 당시 얼마나 최근의 연구인지 알려주는 최신성(Recency)이다. 2000년도 미국 반도체 산업의 특허자료(USPTO)로 분석한 결과, 기술혁신의 특징들 중 산업기술연관성과 기업기술연관성이 기술의 파급효과에 긍정적인 영향을 미친다는 것을 발견하였다. 즉, 산업의 관점과 기업의 관점 모두 위험부담이 적은 기술혁신이 더 큰 파급효과를 가지고, 시간의 관점에서 본 기술혁신의 최신성은 기술의 파급효과에 중요한 요인이 아니라는 것을 알 수 있었다. 즉, 성숙기 시장에서는 기존의 기술혁신을 향상시키는 혁신과 자기기업기술을 많이 이용한 기술혁신이 큰 파급효과를 가진다는 것을 알 수 있었다. Technology innovation is regarded as the quintessential process to acquire a competitive advantage. This is especially true in high-tech industries, and firms that recognize the importance of technological innovation concentrate their capacities on developing new technologies, new products, and new processes. In general, such research requires many resources, but not all technological breakthroughs are followed by positive feedbacks. Consequently, the firms in high-tech industriesare compelled to find new directions in acquiring technologies. This study examines the factors that influence technological innovation and empirically tests the effect these factors have on its diffusion. Radicality, discontinuity, and exploitation/exploration were selected as the factors from the previous literatureon technological innovation and organizational learning. For the empirical test, patent data from the US semiconductor industry were used to describe innovation activities from various fields. From the result, these three factors (Ed- is this what you mean, i.e., radicality, discontinuity, and exploitation/exploration?)were found to have significant meaning as proxies for the diffusion of technological innovation.
박영빈(Young Bin Park),장춘만(Choon Man Jang),양상호(Sang Ho Yang) 한국유체기계학회 2009 유체기계 연구개발 발표회 논문집 Vol.2009 No.-
Pressure characteristics according to the duct shape of a turbo blower connected in serial have been performed to reduce pressure loss in the piping system of a blower. To analyze three-dimensional flow field in the turbo blower, general analysis code, CFX, is employed in the present work. SST turbulence model is introduced to estimate the eddy viscosity. Throughout the numerical analysis for the duct system of the turbo blower having a various shape of inlet guide, optimal shape of the inlet guide can be selected. It is found that the pressure loss in the duct system having a optimal inlet guide is reduced by minimizing the recirculation region in the blade passage of the impeller. Detailed flow analysis of the blower serially connected is also performed and analyzed.
박영빈(Young-Bin Park),김문상(Moon-Sang Kim),김학봉(Hark-Bong Kim) 한국항공우주학회 2005 韓國航空宇宙學會誌 Vol.33 No.12
타원형 실린더의 두께와 받음각 및 레이놀즈수가 실린더에 작용하는 항력과 양력에 어떤 영향을 미치는가를 고찰하기 위해서 수치적 연구를 수행하였다. 타원형 실린더 주위를 흐르는 비정상 점성 유동을 해석하기 위하여 SIMPLER 기법을 이용한 2차원 비압축성 Navier-Stokes 유동 해석 프로그램을 개발하였으며, 두께-시위길이 비가 0.2, 0.4, 0.6인 타원형 실린더 형상에 대해서 레이놀즈수가 400, 600인 조건, 그리고 받음각이 10도, 20도, 30도인 조건하에서 유동을 해석하였다. 본 연구를 통해서 실린더 두께 비와 받음각 및 레이놀즈수가 항력과 양력 계수의 시간 평균값 및 진폭의 크기, 그리고 진동 주기에 크게 영향을 미침을 확인할 수 있었다. A parametric study has been accomplished to figure out the effects of the elliptic cylinder thickness, angle of attack, and Reynolds number on the lift and drag forces exerted on the elliptic cylinder. A two-dimensional incompressible Navier-Stokes flow solver is developed using SIMPLER method to analyze the unsteady viscous flow over elliptic cylinder. Thickness-to-chord ratios of 0.2, 0.4, and 0.6 elliptic cylinders are simulated at different Reynolds numbers of 400 and 600, and angles of attack of 10°, 20°, and 30°. Through this study, it is observed that the elliptic cylinder thickness, angle of attack, and Reynolds number affect significantly not only the time-mean values and the amplitudes of the drag and lift forces but also the frequencies of the force oscillations.
박영빈(Young Bin Park),양윤경(Yun Kyoung Yang),박주영(Ju Young, Park),박진철(Jin Chul, Park) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.-
This study was intended to propose direction of facility improvement for the creation of zero-energy school facilities, in summary, as follows. In other words, most school facilities were rated 1++ (80 - 140 kWh/m22r) after checking the current 715 energy performance levels of school facilities. In particular, it was confirmed that the building has a higher energy efficiency rating than other buildings due to the high application of passive elements, such as EHP, GHP, and high efficiency materials such as LED lighting, and new and renewable energy.
심전도와 호흡신호를 동시에 모니터링 가능한 치과용 체어 시스템
박영빈(Young-Bin Park),조봉균(Bong-Gyun Jo),이태균(Tae-Gyoun Lee),박준석(Jun-Suk Park),정현영(Hyun-young Jung),김민규(Min-Kyu Kim),박광범(Kwang-Bum Park) 대한전자공학회 2016 대한전자공학회 학술대회 Vol.2016 No.6
Dentistry has improved various medical instruments for patients and doctor. However, instruments which monitor ECG, respiratory signal for checking stress and body transformation, etc of patients need a lot of improvement. In this paper, proposed system measures ECG and respiratory signal with non-contact back plate sensor and wrists sensor. The system is used for dental chair.