中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Numerical investigation of the effects of shock tube geometry on the propagation of an ideal blast wave profile 期刊论文  OAI收割
SHOCK WAVES, 2017, 卷号: 27, 期号: 5, 页码: 771-779
作者:  
Li, X. D.;  Hu ZM(胡宗民);  Jiang ZL(姜宗林);  Hu, ZM (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.;  Hu, ZM (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
收藏  |  浏览/下载:29/0  |  提交时间:2017/11/16
Equilibrium geometries, stabilities, and electronic properties of the cationic AunBe+ (n=1-8) clusters: comparison with pure gold clusters 期刊论文  OAI收割
Journal of Molecular Modeling, 2012, 卷号: 18, 期号: 8, 页码: 3553-3562
P. Shao; X. Y. Kuang; Y. R. Zhao; Y. F. Li; S. J. Wang
收藏  |  浏览/下载:28/0  |  提交时间:2013/02/05
Structural, electronic and magnetic properties of gold cluster doped with calcium: Au(n)Ca (n=1-8) 期刊论文  OAI收割
Molecular Physics, 2011, 卷号: 109, 期号: 2, 页码: 315-323
P. Shao; X. Y. Kuang; Y. R. Zhao; H. Q. Wang; Y. F. Li
收藏  |  浏览/下载:24/0  |  提交时间:2012/04/13
Ab initio calculation of the geometric, electronic and magnetic properties of neutral and anionic Au(n)Pd (n=1-9) clusters 期刊论文  OAI收割
Molecular Physics, 2011, 卷号: 109, 期号: 11, 页码: 1485-1494
M. Ai-Jie; K. Xiao-Yu; C. Gang; Z. Ya-Ru; L. Yan-Fang; L. Peng; Z. Chi
收藏  |  浏览/下载:25/0  |  提交时间:2012/04/13
Ab initio calculation of the geometric, electronic and magnetic properties of neutral and anionic AunPd (n=1-9) clusters 期刊论文  OAI收割
MOLECULAR PHYSICS, 2011, 卷号: 109, 期号: 11, 页码: 1485-1494
作者:  
Ai-Jie, Mao;  Xiao-Yu, Kuang;  Gang, Chen;  Ya-Ru, Zhao;  Yan-Fang, Li
  |  收藏  |  浏览/下载:12/0  |  提交时间:2021/02/02
Structural, electronic and magnetic properties of gold cluster doped with calcium: AunCa (n=1-8) 期刊论文  OAI收割
MOLECULAR PHYSICS, 2011, 卷号: 109, 期号: 2, 页码: 315-323
作者:  
Shao, Peng;  Kuang, Xiao-Yu;  Zhao, Ya-Ru;  Wang, Huai-Qian;  Li, Yan-Fang
  |  收藏  |  浏览/下载:10/0  |  提交时间:2021/02/02
Design of high-resolution fourier transform lens (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者:  
Zhang L.;  Zhang L.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
With the development of optical information processing  high-resolution Fourier transform lens has often been used in holographic data storage system  spatial filtering and observation of particles. This paper studies the optical design method of high-resolution Fourier transform optical lenses system  which could be used in particles observation and holographic data storage system. According to Fourier transform relation between object and its frequency plane and the theory of geometrical optics  the system with working wavelength 532nm and resolution 3 m was designed based on ZEMAX. A multi-configuration method was adopted to optimize the system's lenses. In the optical system  a diaphragm was placed at the system's spectrum plane and the system demanded a low vacuum to cut down the influences of atmosphere and other particles. The result of finite element analysis indicated that the influences of vacuum pumping to optics spacing and mirror surface shape very minor  and the imaging quality not being affected. This system has many advantages  such as simple structure  good image quality and a high resolution of 3 m. So it has a wide application prospect and can be used both in holographic data storage system and particles observation.  
Geometrical modulation transfer function of different active pixel of CMOS APS (EI CONFERENCE) 会议论文  OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China
作者:  
Li J.;  Liu J.;  Liu J.;  Liu J.;  Li J.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
The geometrical Modulation Transfer Function (MTF) of CMOS APS (active pixel sensor) is analyzed in this paper. Advanced APS have been designed and fabricated where different pixel shapes such as square  rectangle and L shape  were placed  because the amplifier circuit and other function circuits inter pixel of APS take up some pixel area. MTF is an important figure of merit in focal plane array imaging sensors. Research on analyzing the MTF for the proper pixel shape is currently in progress for a centroidal configuration of a target position. MTF will give us a more complete understanding of the tradeoffs opposed by the different pixel designs and by the signal processing conditions. Based on image sensor sampling and reconstructing model  the MTF expression of any active pixel shape has been deduced in this paper. According to actual pixel shape  three different active area pixels were analyzed  they were square  rectangle  and L shape  their Fill Factor (FF) is 30%  44% and 55%  respectively. Results of simulation experiments indicate that different pixel geometrical characteristics contribute significantly to the figures of their MTF. Different geometrical shape of active sensitive area of pixel and different station in pixel would influence MTF figures. The analysis results are important in designing better APS pixel and more important in analyzing imaging system performance of APS subpixel precision system.