机构

• 理论物理研究所 [1]
• 长春光学精密机械与物... [1]
• 上海光学精密机械研究... [1]

采集方式

• OAI收割 [3]

内容类型

• 期刊论文 [2]
• 会议论文 [1]

发表日期

• 2009 [1]
• 2008 [1]
• 2005 [1]

学科主题

• Physics [1]
• 光学薄膜 [1]

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A high-speed acquisition and processing system of the laser speckle signal on the magnetic fluid (EI CONFERENCE) 会议论文  OAI收割 International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China 作者:  Sun Y.;  Sun Y.;  Wan Q.-H. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 In order to achieve the dynamical detection and real-time analysis of the movement status of the magnetic fluid  according to the difficulties of the detection of the magnetic fluid  established a high-speed acquisition and processing system of laser speckle signal on the magnetic fluid. First of all  the FPGA (EP2C8T144C8N) drived the linear array CCD(TCD1501D) to scan in the corresponding time sequence given by the computer  collected the laser speckle interferometric image in rapid change on the surface of the magnetic fluid  which followed the movement of the magnetic fluid  and the signal collected by CCD was converted into the digital data through the high-speed A/D convertor and stored into the internal buffer FIFO of the FPGA  whose width and depth were designed by the user as required. Then  the FPGA sent the digital signal of the laser speckle interferometric images into the computer through the USB2.0 highspeed differential bus  whose transmission rate can reach 480Mb/s in theory. Finally  the distribution of the laser speckle on the magnetic fluid was messy and random  which carried certain information about the surface of the magnetic fluid  based on the theories of the statistic correlation and the subdivision of images  analysing and processing the laser speckle interferometric images  indirectly got the movement status of the magnetic fluid under the electromagnetic field. The experimental results show that: the High Speed Acquisition and Processing System has the advantage of full-court  non-contact  non-invasive  high-precision and high reliability and so on. The detection resolution of high speed acquisition and processing system is superior to 1m and the sample rate is 3Msps  which basically meets the requirements of the magnetic fluid movement state detection. 2009 SPIE.   Quaternion-octonion analyticity for Abelian and non-Abelian gauge theories of dyons 期刊论文  OAI收割 INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, 2008, 卷号: 47, 期号: 6, 页码: 1497-1511 作者:  Bisht, P. S.;  Negi, O. P. S.;  Negi, OPS , Kumaun Univ, Dept Phys, SSJ Campus, Almora 263601, Uttarakhand, India   |  收藏  |  浏览/下载：23/0  |  提交时间：2012/08/02 Quantum Field-theory  Generalized Electromagnetic-fields  Magnetic-charge Renormalization  Null-tetrad Formulation  Non-riemannian Manifold  Kaluza-klein Theory  Clifford Space  Dirac-equation  Gravito-dyons  Monopoles   基于Berreman矩阵的双折射薄膜光谱响应特性计算 期刊论文  OAI收割 光学学报, 2005, 卷号: 25, 期号: 2, 页码: 279, 283 王建国; 齐红基; 贺洪波; 邵建达; 范正修 收藏  |  浏览/下载：911/127  |  提交时间：2009/09/22 薄膜光学  电磁场理论  Berreman矩阵  双折射薄膜  thin film optics  electromagnetic field theory  Berreman matrix  birefringent films