中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共9条,第1-9条 帮助

条数/页: 排序方式:
Feasibility of Urban-Rural Temperature Difference Method in Surface Urban Heat Island Analysis under Non-Uniform Rural Landcover: A Case Study in 34 Major Urban Agglomerations in China 期刊论文  OAI收割
REMOTE SENSING, 2024, 卷号: 16, 期号: 7, 页码: 20
作者:  
Si, Menglin;  Yao, Na;  Li, Zhao-Liang;  Liu, Xiangyang;  Tang, Bo-Hui
  |  收藏  |  浏览/下载:31/0  |  提交时间:2024/05/20
Improved equations of ground pressure for shallow large-diameter shield tunnel considering multiple impact factors 期刊论文  OAI收割
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2023, 卷号: 138, 期号: -, 页码: -
作者:  
Cui, Lan;  Yang, Wenyu;  Zheng, Junjie;  Sheng, Qian
  |  收藏  |  浏览/下载:22/0  |  提交时间:2023/08/02
Recognition of Colored Face, Based on an Improved Color Local Binary Pattern 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF PATTERN RECOGNITION AND ARTIFICIAL INTELLIGENCE, 2019, 卷号: 33, 期号: 4, 页码: 23
作者:  
Li, Zhi-Ming;  Huang, Zheng-Hai;  Li, Wen-Juan
  |  收藏  |  浏览/下载:54/0  |  提交时间:2019/12/16
Rapid Micro-Patterning of a Conductive PANI/MWNTs-Polymer Composite Using an Optically-induced Electrokinetics Chip 会议论文  OAI收割
IEEE Nanotechnology Materials and Devices Conference (IEEE NMDC), Honolulu, HI, OCT 16-19, 2012
作者:  
Liu N(刘娜);  Liang WF(梁文峰);  Mai, John D.;  Dong ZL(董再励);  Li WJ(李文荣)
收藏  |  浏览/下载:36/0  |  提交时间:2013/12/26
A flexible, dynamically programmable and low-cost method applicable to micro-patterning of a conductive polymer/carbon nanotube composite solution is significant due to the potential applications in many areas. This paper demonstrates a new micro-patterning method for fabricating electrodes from a conductive polyaniline (PANI)/MWNT composite using an optically-induced electrokinetics (OEK) chip. This method quickly patterns flexible polymeric electrodes with different geometries when a square waveform signal with amplitudes from 16-20 Volts and frequencies from 20-30 kHz are applied. The geometric dimensions of the electrodes can be varied dynamically by controlling the size and exposure time of the light pattern. The surface morphology of electrodes patterned by this method is scanned by an atomic force microscope (AFM) and a scanning electron microscope (SEM) which show that the electrodes are uniform and continuous. Furthermore, the geometric dimensions and resistances of the electrodes are measured and analyzed. Experimental results reveal that the relationship between the resistance and geometries of the electrodes obey Ohm's law and the resistivity of the electrodes is about 0.03 Omega.m.  
Effect of dispersion medium and dominated evaporation on the pattern formation of colloidal suspension 会议论文  OAI收割
2011 International Academic Conference on Machinery, Materials Science and Engineering Applications, MMSE 2011, Wuhan, China, JUL 15-16, 2011
作者:  
Ma WJ(马文杰);  Wang YR(王育人);  Ma WJ;  Ma WJ
收藏  |  浏览/下载:26/0  |  提交时间:2013/02/26
The automatic photoresist coating machine on the spherical surface (EI CONFERENCE) 会议论文  OAI收割
2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009, August 9, 2009 - August 12, 2009, Changchun, China
作者:  
Li Y.;  Li Y.;  Li Y.;  Li Y.;  Wang H.
收藏  |  浏览/下载:21/0  |  提交时间:2013/03/25
The photoresist coating is an important micro machining process widely applied in engineering. The formed film should be uniform and enough thin to assure the quality of final pattern whose line width is micrometer or nanometer. It is more difficult to process it on the spherical surface than on the flat. In this work  mathematic model of film thickness on the spherical surface is proposed by using hydromechanics. The key factors that influence the film thickness are obtained from the analysis of coating process. Then  the rational parameters which be controlled by the automatic photoresist coating machine can be final set up according to the result of the coating experiments. And the accuracy analysis of the key part which is used for the main process is performed by the error analytics. This machine not only makes the whole coating process automation  but also monitors the film quality in real time. It is adequate for aspheric surface also. 2009 IEEE.  
Uniform mems chip temperatures in the nucleate boiling heat transfer region by selecting suitable, medium boiling number range 期刊论文  OAI收割
nanoscale and microscale thermophysical engineering, 2008, 卷号: 11, 期号: 3/4, 页码: 273-300
Xu JL (Xu, J. L.); Gan YH (Gan, Y. H.)
收藏  |  浏览/下载:237/13  |  提交时间:2010/09/23
Uniform MEMS chip temperatures in the nucleate boiling heat transfer region by selecting suitable, medium boiling number range 期刊论文  OAI收割
nanoscale and microscale thermophysical engineering, 2007, 卷号: 11, 期号: 3-4, 页码: 273-300
作者:  
Xu, J. L.;  Gan, Y. H.
收藏  |  浏览/下载:63/12  |  提交时间:2010/09/27
Key techniques of laser direct writing patterns on spherical substrate (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, July 8, 2007 - July 12, 2007, Chengdu, China
作者:  
Zhao J.-L.;  Feng X.-G.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
Comparing with the writing method of plane pattern  spherical pattern' has some remarkable different on several points. Firstly  it is difficult to spin-coated a uniform photoresist film on a spherical substrate  especially the ratio of spherical radius to caliber is smaller  and the spin-coated way must match the ratio of spherical radius to caliber. Secondly  if the sphere couldn't be regarded as a plane  a so-called concentric optical scan movement way must be applied for the generation of spherical pattern  because the reflex of substrate will affect the quantity of illumination. Commonly  an alignment technique is indispensable with pattern generation of spherical surface by the concentric optical scan in order to ensure the orthogonal intersection of focusing laser beam and writing surface. Thirdly  a uniform velocity control must be considered for the laser direct writing method on a spherical substrate. Otherwise  the exposure time of photoresist will be different  and the line widths of pattern will be also different at different areas. Fourthly  commonly  because the errors of concentric machine and substrate surface shape are bigger  so focusing servo-control technique is also needful for writing a pattern on a spherical substrate. Focusing servo-control may keep the focal spot on the spherical surface by a focus detection and control system in the course of writing pattern. Using these techniques  we fabricated a line width of 7m and a period of 600m isometric mesh on the concave of a spherical substrate.