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浏览/检索结果: 共10条，第1-10条 帮助

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High-performance potassium-sodium niobate lead-free piezoelectric ceramics based on polymorphic phase boundary and crystallographic texture 期刊论文  OAI收割
ACTA MATERIALIA, 2019, 卷号: 165, 期号: -, 页码: 486—495
作者:  Li, P;  Huan, Y;  Yang, WW;  Zhu, FY;  Li, XL
  |  收藏  |  浏览/下载：46/0  |  提交时间：2019/12/30
Micro-electro-mechanical systems capacitive ultrasonic transducer with a higher electromechanical coupling coefficient 期刊论文  OAI收割
Micro & Nano Letters, 2015, 卷号: 10, 期号: 10, 页码: 4
作者:  Miao, J(苗静);  Shen, WJ(沈文江);  He, CD;  Xue, CY;  Xiong, JJ
收藏  |  浏览/下载：84/0  |  提交时间：2015/12/31
silicon  elemental semiconductors  silicon-on-insulator  wafer bonding  electromechanical effects  ultrasonic transducers  capacitive transducers  micromechanical devices  micromachining  vibrations  membranes  finite element analysis  reliability  capacitance  electromechanical coupling coefficient  capacitive micromachined ultrasonic transducer  impedance matching  propagation medium  microelectromechanical system capacitive ultrasonic transducer  silicon on insulator  wafer bonding  optimum geometric dimensions  membrane mechanical vibration  electrical characteristics  finite-element analysis  operation mode  device safety  device reliability  equivalent stress  operation-collapse voltage  bottom electrodes  glass substrate surface  parallel parasitic capacitance  Si  SiO2  
RESEARCH ON STRUCTURAL OPTIMIZATION OF THE FLEXIBLE MAGNETOELECTRIC TORQUE UNIMORPH DEVICE 会议论文  OAI收割
OCT 25-27, 2013
作者:  Ji, Hong-wei;  Xing, Zeng-ping;  Liu, Yi-wei;  Xu, Xiao-hong;  Li, Run-wei
  |  收藏  |  浏览/下载：27/0  |  提交时间：2018/01/12
Study on nanocrystalline Cr2O3 films deposited by arc ion plating: II. Mechanical and tribological properties 期刊论文  OAI收割
Surface & Coatings Technology, 2012, 卷号: 206, 期号: 10, 页码: 2638-2644
T. G. Wang; D. Jeong; Y. M. Liu; Q. Wang; S. Iyengar; S. Melin; K. H. Kim
收藏  |  浏览/下载：24/0  |  提交时间：2013/02/05
Water electrolysis enhanced by super gravity field for hydrogen production 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 卷号: 35, 期号: 8, 页码: 3198-3205
作者:  Wang, Mingyong;  Wang, Zhi;  Guo, Zhancheng
收藏  |  浏览/下载：22/0  |  提交时间：2013/11/19
200 MW S-band traveling wave resonant ring development at IHEP 期刊论文  OAI收割
中国物理C, 2010, 期号: 3, 页码: 402-404
作者:  Zhou ZS(周祖圣);  Chi YL(池云龙);  Gu MP(顾孟平);  Pei GX(裴国玺)
收藏  |  浏览/下载：12/0  |  提交时间：2015/12/14
200 MW S-band traveling wave resonant ring development at IHEP 期刊论文  OAI收割
CHINESE PHYSICS C, 2010, 卷号: 34, 期号: 3, 页码: 402-404
作者:  Zhou ZS(周祖圣);  Chi YL(池云龙);  Gu MP(顾孟平);  Pei GX(裴国玺);  Zhou, ZS
收藏  |  浏览/下载：21/0  |  提交时间：2016/06/28
Effects of CoFe2O4 content on the properties of nanoparticulate Bi3.15Nd0.85Ti3O12-CoFe2O4 thin films 期刊论文  OAI收割
SCRIPTA MATERIALIA, 2008, 卷号: 58, 页码: 715-718
作者:  Liao, M.;  Zhong, X. L.;  Wang, J. B.;  Zhou, Y. C.;  Liao, H.
  |  收藏  |  浏览/下载：22/0  |  提交时间：2018/05/31
Low drive-voltage and high-bandwidth electro-optic modulators based on BaTiO3 thin-film waveguides (EI CONFERENCE) 会议论文  OAI收割
Science and Technology of Dielectrics for Active and Passive Photonic Devices - 210th Electrochemical Society Meeting, October 29, 2006 - November 3, 2006, Cancun, Mexico
Sun D. G.; Fu X. H.; Liu Z. F.; Ho S. T.; Wessels B. W.
收藏  |  浏览/下载：45/0  |  提交时间：2013/03/25
We investigated electro-optic modulator structures to target low drive voltage  high-speed modulation  and small device size with c-axis grown BaTiO3/MgO ferro-electric thin films. In this study  the calculations are focused on the ideal thin film with a quadratic relation between the half-wave drive voltage V and the interaction length L in the electro-optic modulation case we obtained in previous work. With the quadratic electro-optic modulating relation and the optimal rib waveguide structure of BaTiO3/MgO thin films  the frequency-voltage-size performances for 2.5GHz  10GHz  40GHz  and 100GHz modulation bandwidths have been obtained under half-wave drive voltages of 0.8V  1.6V  3.0V and 4.8V  respectively  for the ideal film with r51=730 pm/V at 1550nm wavelength  where both the phase velocity matching condition and the conductor induced microwave attenuation are considered. The required device lengths to achieve these four typical values of modulation bandwidth are 3.3 mm  0.8 mm  0.4 mm and 0.2 mm  respectively. With the c-axis grown BaTiO3/MgO crystal thin films and the quadratic electro-optic modulating relation  an electro-optic coefficient of reff=180 pm/V for the c-axis grown BaTiO3/MgO ferro-electric thin films was measured  which is relatively far from the ideal value of r51=560 pm/V. copyright The Electrochemical Society.  
Study of dynamic response on a MOEMS 22 optical switch (EI CONFERENCE) 会议论文  OAI收割
Optical Transmission, Switching, and Subsystems II, November 9, 2004 - November 11, 2004, Beijing, China
作者:  Wang G.;  Chen W.
收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25
The MOEMS 22 optical switch with slant lower electrode and with torsion beam on silicon is designed and analyzed theoretically. Analytical formulae for the squeeze film damping coefficient and the squeeze film damping moment on the cantilever beam of the optical switch are derived. Based on the torsion dynamics theory  the technique and relative results are presented for analyzing the actuating voltage and the switch time. The optimized result of parameters is as: length  width and thickness of the torsion beam are 700  12 and 10 m  length and width of the cantilever beam are 1900 and 1000 m  length and width of the balance beam are 100 and 1000 m  shortest spacing between the upper and lower electrodes is 0.05 m  and highness of the lower electrode is 55 m  respectively. The actuating voltage is less than 10 V  and the switching time of Ton and Toff are 1.30ms and 1.25ms  respectively. The computed results show that the air squeeze film damping is an important factor for the study of dynamic response on MOEMS optical switch.