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	Numerical simulation of dielectric barrier discharge with asymmetrical electrode in atmospheric helium 期刊论文 OAI收割 PLASMA SOURCES SCIENCE & TECHNOLOGY, 2021, 卷号: 30, 期号: 3 作者: Wang, Jing; Li, Jing; Lei, Bingying; Ran, Shuang; Xu, Boping \| 收藏 \| 浏览/下载：124/0 \| 提交时间：2021/04/20 asymmetrical electrode atmospheric dielectric-barrier discharge complementary pattern curtain-like field distribution surface charge accumulation
	Modeling the Global Distribution of Solar Wind Parameters on the Source Surface Using Multiple Observations and the Artificial Neural Network Technique 期刊论文 OAI收割 SOLAR PHYSICS, 2019, 卷号: 294, 期号: 8, 页码: 111 作者: Yang, Yi; Shen, Fang \| 收藏 \| 浏览/下载：31/0 \| 提交时间：2019/12/17 Source surface Coronal magnetic field distribution Coronal polarized brightness distribution Interplanetary scintillation Artificial neural network technique
	Effects of different irrigation methods on micro-environments and root distribution in winter wheat fields SCI/SSCI论文 OAI收割 2015 作者: Lu G. H.; Song, J. Q.; Bai, W. B.; Wu, Y. F.; Liu, Y. 收藏 \| 浏览/下载：37/0 \| 提交时间：2015/12/09 border irrigation root profile distribution sprinkler irrigation surface drip irrigation field micro-environment winter wheat north china plain sprinkler irrigation soil-temperature water growth biomass transpiration microclimate frequency
	Design and tolerance analysis of compensator for high order aspheric surface testing (EI CONFERENCE) 会议论文 OAI收割 2009 International Conference on Optical Instruments and Technology - Optoelectronic Measurement Technology and Systems, October 19, 2009 - October 22, 2009, Shanghai, China 作者: Chen X.; Liu W.; Chen X.; Chen X. 收藏 \| 浏览/下载：29/0 \| 提交时间：2013/03/25 High accuracy is required in surface testing of 90nm nodal point lithography projecting lens. By comparing various aspheric surface testing methods the structure layout of the compensator is a meniscus positive lens combined with a Plano-convex positive lens. The design results indicate that: primary and high order aberrations are balanced well we adopt Offner null compensator to test the aspheric surface in the point diffraction interferometer at last. In this paper MTF exceeds diffraction limit an Offner compensator is presented on the base of the third order aberration theory to test concave aspheric surface root-mean-square (RMS) of wave front error /167. The F-number of the system can achieve F/1.64. By the analysis of the process of aspheric surface testing with the designed system the optical construction parameters of which is determined by introducing equal-quantities spherical aberration to compensate all orders of aspheric coefficients. The field of view of the system is 0.02 a loosen distribution of the tolerance was presented based on the accuracy of measuring apparatus. 2009 SPIE.
	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.
	High power VCSEL device with periodic gain active region (EI CONFERENCE) 会议论文 OAI收割 Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China 作者: Zhang Y.; Liu Y.; Liu Y.; Liu Y.; Qin L. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.
	A novel analytical model for the breakdown voltage of thin-film SOI power MOSFETs 期刊论文 OAI收割 SOLID-STATE ELECTRONICS, 2005, 卷号: 49, 期号: 1, 页码: 43-48 Yang, WW; Cheng, XH; Yu, YH; Song, ZR; Shen, DS 收藏 \| 浏览/下载：18/0 \| 提交时间：2012/03/24 SURFACE FIELD DISTRIBUTION THRESHOLD VOLTAGE RESURF DEVICES OPTIMIZATION