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Effect of a Bi-Cr-O synthetic multi-phase on the microstructure and electrical properties of ZnO-Bi2O3 varistor ceramics 期刊论文  OAI收割
CERAMICS INTERNATIONAL, 2016, 卷号: 42, 期号: 13, 页码: 14350-14354
作者:  
Xu, Zhijun;  Bai, Hairui;  Ma, Shuai;  Chu, Ruiqing;  Hao, Jigong
收藏  |  浏览/下载:45/0  |  提交时间:2017/02/27
Influence of Cr2O3 on highly nonlinear properties and low leakage current of ZnO-Bi2O3 varistor ceramics 期刊论文  OAI收割
CERAMICS INTERNATIONAL, 2016, 卷号: 42, 期号: 9, 页码: 10547-10550
作者:  
Bai, Hairui;  Li, Shuhui;  Zhao, Yunhan;  Xu, Zhijun;  Chu, Ruiqing
收藏  |  浏览/下载:39/0  |  提交时间:2017/02/27
Dynamic nonlinear transformation algorithm in LED display panel (EI CONFERENCE) 会议论文  OAI收割
2010 2nd International Conference on Computational Intelligence and Natural Computing, CINC 2010, September 13, 2010 - September 14, 2010, Wuhan, China
Chang F.; Zheng X.-F.; Wang R.-G.; Ding T.-F.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
In order to ensure high quality display results of LED display panel in all kinds of ambient brightness  a dynamic nonlinear transformation algorithm is proposed. First  the implementation processes of the method of lock-up table nonlinear transformation are described  which is the traditional method of nonlinear transformation. Second  an algorithm model of dynamic nonlinear transformation is constructed Third  the algorithm realization steps are discussed on the basis of the constructed algorithm model. Finally  the relationship between the coefficient of nonlinear transformation and ambient brightness is analyzed. Experimental results indicate  regardless of ambient brightness this algorithm is able to ensure that the contrast of LED display panel does not decrease  so the display results of LED display panel is good. 2010 IEEE.  
Experiments of second harmonic generation output in pulsed TEA CO 2 laser (EI CONFERENCE) 会议论文  OAI收割
High-Power Lasers and Applications V, October 18, 2010 - October 19, 2010, Beijing, China
作者:  
Li D.
收藏  |  浏览/下载:73/0  |  提交时间:2013/03/25
It is always the hot subject to realize the output of high-power laser in the range of 3-5m wavelength. This rang of wave band has greatly important applications in military because it located in the atmosphere window. Generally there are two ways to obtain this range of laser wavelength. One way is through optical parameter oscillation (OPO) from shorter laser wavelength and the other is through second harmonic generation (SHG) from longer laser wavelength. Firstly  the comparison between tow nonlinear crystals ZnGeP2 and AgGaSe2 is conducted for their nonlinear coefficient and damaging threshold in theory. The theoretical results show that the crystal AgGaSe 2 is more suitable for the SHG of pulsed TEA CO2 laser. When using pulsed TEA CO2 laser with wavelength of 9.3m to pumping AgGaSe2 SHG crystal  the wavelength of 4.65m is obtained. In the condition of repetition rate 100Hz  the upmost output power of single pulse is up to level of 1W  which corresponding efficiency of SHG is about 6%. The experimental results show that the polarization of laser beam has greatly influence on the SHG output of the crystal. Under the radiation of 3MW/cm 2 from fundamental wave and the right position for maximal SHG output in the crystal  when polarization of laser beam rotates 4.5  the SHG output of energy decrease about 30%. The research of this paper will make a foundation for further development of mid-infrared laser. 2010 Copyright SPIE - The International Society for Optical Engineering.