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浏览/检索结果: 共8条，第1-8条 帮助

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Growth of alpha-axis ZnO films on the defective substrate with different O/Zn ratios: A reactive force field based molecular dynamics study 期刊论文  OAI收割
Journal of Alloys and Compounds, 2015, 卷号: 628, 页码: 317-324
L.; Shahzad Liu, M. B.; Qi, Y.
收藏  |  浏览/下载：33/0  |  提交时间：2015/05/08
Identification of structural defects in graphitic materials by gas-phase anisotropic etching 期刊论文  OAI收割
NANOSCALE, 2012, 卷号: 4, 期号: 6, 页码: 2005
Wu, S; Yang, R; Shi, DX; Zhang, GY
收藏  |  浏览/下载：28/0  |  提交时间：2013/09/17
Structural and optical properties of a-plane zno thin films synthesized on gamma-lialo(2) (302) substrates by low pressure metal-organic chemical vapor deposition 期刊论文  iSwitch采集
Thin solid films, 2008, 卷号: 516, 期号: 18, 页码: 6079-6082
作者:  Lin, Hui;  Zhou, Shengming;  Zhou, Jianhua;  Liu, Xuedong;  Gu, Shulin
收藏  |  浏览/下载：37/0  |  提交时间：2019/05/10
Structural and optical properties of a-plane ZnO thin films synthesized on γ-LiAlO2 (302) substrates by low pressure metal-organic chemical vapor deposition 期刊论文  OAI收割
thin solid films, 2008, 卷号: 516, 期号: 18, 页码: 6079, 6082
Lin Hui; 周圣明; Zhou Jianhua; Liu Xuedong; Gu Shulin; Zhu Shunming; Xie Zili; Han Ping; Zhang Rong
收藏  |  浏览/下载：1336/140  |  提交时间：2009/09/24
Key techniques of laser direct writing of fine lines on the spherical surface (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Design and Fabrication, August 21, 2005 - August 26, 2005, Changchun, China
Liang F.; Hu J.
收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25
The main principles of laser direct writing (LDW) system for lines on the spherical surface (SS) are discussed. It is pointed out that line profile is determined by the exposure dose distribution  which lies on the light intensity distribution of focus plane and the scanning speed. To improve the quality of line profile on the SS  several key techniques as follows are introduced. Firstly  the unique system configuration  four axes mutually intersecting at the center of the SS  is adopted  which ensures the shape of the focus be maintained circular during the writing period. Secondly  an automatic focus system (AFS) with the function of automatic focus in a certain range is introduced. Thirdly  to guarantee the linear velocity to accord with the exposure character of the photoresist all the time  an efficient arithmetic that controls motors run at appropriate angular velocity in different latitude is developed. Finally  to achieve a stable and well-behaved system so as to compensate the velocity instability resulting from unavoidable errors of mechanical and electronics factor  a powerful programmable multi-axis controller (PMAC) is utilized as the kernel element of the servocontrol system  and the curves of step response and parabolic response achieved by feedforward and PID loop tuning indicate that the location precision and velocity stability have reached a high level. The experimental results of LDW of lines on the SS work piece with a diameter 30 mm and a radius equal to 100 mm are given. The section analysis of the lines on the photoresist by the atomic force microscope (AFM) after exposure and development is performed. The results show that line width is about 3.0 m  and the steep sides of the lines are parallel to each other.  
Investigation of growth mode in ZnO thin films prepared at different temperature by plasma-molecular beam epitaxy (EI CONFERENCE) 会议论文  OAI收割
13th International Conference on Molecular Beam Epitaxy, August 22, 2004 - August 27, 2004, 13th International Conference on Molecular Beam Epitaxy, August 22, 2004 - August 27, 2004
Liang H. W.; Lu Y. M.; Shen D. Z.; Yan J. F.; Li B. H.; Zhang J. Y.; Liu Y. C.; Fan X. W.
收藏  |  浏览/下载：44/0  |  提交时间：2013/03/25
High-quality ZnO thin films on c-plane sapphire (Al2O 3) substrates were prepared by plasma-molecular beam epitaxy (P-MBE). The influence of growth temperature on growth mode of ZnO was investigated. Real-time monitored by reflection high-energy electron diffraction (RHEED) images show that  below 500 C  ZnO thin film was grown by three-dimension (3D) growth mode. While the two-dimension (2D) growth mode was obtained above growth temperature of 650 C. Atomic force microscopy (AFM) images present that the surface morphology of ZnO thin film with 2D growth is improved and X-ray rocking curves (XRC) indicate that the full width at half maximum (FWHM) of the ZnO (0 0 2) peak becomes narrow. From the photoluminescence (PL) spectra  ultraviolet (UV) emission peak exhibits obvious blue-shift for the samples grown at lower temperature  which is attributed to the effect of the quantum confinement arisen from small crystal grain sizes. The minimum carrier concentration of N=7.661016 cm-3 was obtained in the ZnO thin films with the 2D grown  which is closed to that of bulk ZnO. 2005 Elsevier B.V. All rights reserved.  
Structural change of deformation twin boundaries in a heavily deformed gamma-TiAl-based alloy 期刊论文  OAI收割
Materials Letters, 2000, 卷号: 45, 期号: 6, 页码: 320-325
L. C. Zhang; J. G. Wang; G. L. Chen; G. Sauthoff
收藏  |  浏览/下载：16/0  |  提交时间：2012/04/14
Electrocrystallized platinum nanoparticle on carbon substrate 期刊论文  OAI收割
electrochemistry communications, 2000, 卷号: 2, 期号: 11, 页码: 800-804
Liu SQ; Tang ZY; Wang EK; Dong SJ
收藏  |  浏览/下载：169/30  |  提交时间：2010/11/04