中国科学院机构知识库网格系统: 检索

THE MECHANISM OF THREE-DIMENSION STEADY SHOCK WAVE INTERACTION 会议论文 OAI收割
Montreal, CANADA, JUL 15-20, 2018
作者: Wang C(王春); Yang RX(杨瑞欣); Jiang ZL(姜宗林)

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收藏 | 浏览/下载：24/0 | 提交时间：2019/04/19

Propagation of rotational Risley-prism-array-based Gaussian beams in turbulent atmosphere 会议论文 OAI收割
Shanghai, PEOPLES R CHINAShanghai, PEOPLES R CHINA, NOV 24-26, 2017NOV 24-26, 2017
作者: Chen, Feng; Ma, Haotong; Dong, Li; Ren, Ge; Qi, Bo

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收藏 | 浏览/下载：20/0 | 提交时间：2019/08/23

rotational Risley-prism-array turbulent atmosphere beam quality performance

Subwavelength resolution Fourier ptychography with hemispherical digital condensers 会议论文 OAI收割
San Francisco, CA, United states, 2018-01-28
作者: Pan, An; Zhang, Yan; Li, Maosen; Zhou, Meiling; Lei, Ming

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收藏 | 浏览/下载：19/0 | 提交时间：2018/05/21

Computational Imaging Fourier Ptychography Phase Retrieval Quantitative Phase Imaging

Influence of weak planes on rockburst occurrence 会议论文 OAI收割
McGill Univ, Montreal, CANADA, AUG 13-19, 2016
作者: Manouchehrian, Amin; Cai, Ming

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收藏 | 浏览/下载：18/0 | 提交时间：2018/06/05

Numerical simulation excavation heterogeneity weak plane rockburst

Lateral migration of fiber in settling suspensions 会议论文 OAI收割
Paper Conference and Trade Show, PaperCon 2014, Nashville, TN, United states, April 26, 2014 - April 30, 2014
作者: Qi DW; He GW(何国威); Liu YM

收藏 | 浏览/下载：14/0 | 提交时间：2017/05/27

Fiber aspect ratio Fiber suspensions Lateral migration Lattice Boltzmann simulations Particle densities Particle number density Repulsive forces Rotational inertia

Advanced astigmatism-corrected tandem Wadsworth mounting for small-scale spectral broadband imaging spectrometer (EI CONFERENCE) 会议论文 OAI收割
作者: Lin G.-Y.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

Tandem gratings of double-dispersion mount make it possible to design an imaging spectrometer for the weak light observation with high spatial resolution high spectral resolution and high optical transmission efficiency. The traditional tandem Wadsworth mounting is originally designed to match the coaxial telescope and large-scale imaging spectrometer. When it is used to connect the off-axis telescope such as off-axis parabolic mirror it presents lower imaging quality than to connect the coaxial telescope. It may also introduce interference among the detector and the optical elements as it is applied to the short focal length and small-scale spectrometer in a close volume by satellite. An advanced tandem Wadsworth mounting has been investigated to deal with the situation. The Wadsworth astigmatism-corrected mounting condition for which is expressed as the distance between the second concave grating and the imaging plane is calculated. Then the optimum arrangement for the first plane grating and the second concave grating which make the anterior Wadsworth condition fulfilling each wavelength is analyzed by the geometric and first order differential calculation. These two arrangements comprise the advanced Wadsworth mounting condition. The spectral resolution has also been calculated by these conditions. An example designed by the optimum theory proves that the advanced tandem Wadsworth mounting performs excellently in spectral broadband. 2012 Optical Society of America.

The research of knitting needle status monitoring setup 会议论文 OAI收割
5th international symposium on photoelectronic detection and imaging - laser sensing and imaging and applications
作者: Liu Lu; Liao Xiao-qing; Zhu Yong-kang; Yang Wei; Zhang Pei

收藏 | 浏览/下载：8/0 | 提交时间：2016/11/28

In-plane anisotropic converse magnetoelectric coupling effect in FeGa/polyvinylidene fluoride heterostructure films 会议论文 OAI收割
JAN 14-18, 2013
作者: Zuo, Zhenghu; Zhan, Qingfeng; Dai, Guohong; Chen, Bin; Zhang, Xiaoshan

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收藏 | 浏览/下载：10/0 | 提交时间：2021/12/02

POLY(VINYLIDENE FLUORIDE) PIEZOELECTRICITY COMPOSITE

Study on spectrograph for ionosphere: A broadband imaging instrument prototype for far-ultraviolet (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者: Wang S.-R.; Lin G.-Y.; Yu L.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

Current research on space-based exploration for the ionosphere needs more advanced technologies. Because the spectral signals in the ionosphere distributing basically in the far-ultraviolet waveband are very weak. Usual spectrometer structures and detectors such as CCD can't receive enough information. Based on this principle of atmospheric sounding the imaging spectrometer prototype for ionosphere detection application was designed to solve the problem. This prototype consists of the telescope and the imaging spectrometer. The simple structure and small number of mirrors can help higher transmission efficiency be achieved and weak signals detection be implemented. The telescope is an off-axis parabolic mirror and the spectrometer is a modified Czerny-Turner spectral imaging system. Modified Czerny-Turner spectrometer contains a spherical mirror a fixed plane grating and a toroidal mirror. By adjusting the incident angle to the collimating mirror and using toroidal mirror coma and astigmatism were corrected well. We also optimize distances between the grating to the focusing mirror and the focusing mirror to the image plane to improve disadvantages of traditional Czerny-Turner structure. Designed results demonstrate that aberrations are substantially corrected and high image quality can be obtained in broad waveband. The photon counting Wedge-Strip-Anode detector with micro-channel planes as the receiving plane is accepted for the instrument prototype. The other photon counting 2-D detector responding well for weak light such as Cross-Delay line detector and MAMA detector can also be used for detection. The calibration and performances testing system is made of a vacuum system a deuterium lamp a monochrometer and the instrument prototype. Results obtained from the experiment show that the spectral resolution is 2.4 nm and the spatial resolution is 80 m. The other calibration experiments are running. The technology of the spectrometer prototype is important for the research and applications of ionosphere remote sensing. 2011 SPIE.

A design of beam shaping unit for 193nm lithography illumination system using angular spectrum theory (EI CONFERENCE) 会议论文 OAI收割
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
作者: Zhao Y.; Zhang W.; Zhang W.; Li S.; Gong Y.

收藏 | 浏览/下载：16/0 | 提交时间：2013/03/25

Off-axis illumination (OAI) technology is widely used to enhance resolution for deep ultraviolet lithography. The realizing methods of OAI include geometrical optics method and physical optics method. However the former has the disadvantage of weak intensity distribution controlling ability and the latter introduces simulation errors evidently when dealing with near field diffraction propagation. A diffractive optical element (DOE) designing method using plane wave angular spectrum theory is presented in this paper. Several kinds of OAI modes at near field away from DOE can be realized and simulation errors and the size of illuminator are also reduced. According to studying the relationships of the sampling point distance of DOE light beam propagation distance and the structure of the beam shaping unit a method of determining the designing parameters is discussed. Using this method several illumination modes are realized and simulation results show that all diffraction efficiencies reach up to 84%. The method of DOE manufacturing is analyzed at last and it is proven to be feasible. 2010 SPIE.