中国科学院机构知识库网格系统: 检索

Geopolitics of the energy transition 期刊论文 OAI收割
JOURNAL OF GEOGRAPHICAL SCIENCES, 2023, 卷号: 33, 期号: 4, 页码: 683-704
作者: Yang, Yu; Xia, Siyou; Qian, Xiaoying

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收藏 | 浏览/下载：9/0 | 提交时间：2023/06/10

energy transition geopolitics energy security geographical role state relations new energy materials cybersecurity

新型人工浮岛强化降解污染物机理及应用研究 期刊论文 OAI收割
水处理技术, 2020, 卷号: 46, 期号: 5, 页码: 81
作者: 孔令为; 王齐瑞; 汪璐; 张义

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收藏 | 浏览/下载：48/0 | 提交时间：2020/08/04

new type artificial floating island natural polymer materials slow-release solid carbon luffa sponge corncob 新型人工浮岛天然高分子材料缓释固体碳源丝瓜络玉米芯

The Improved Efficiency of Polymer Solar Cells by Fluorine Atoms at Ortho-Position of Alkxoyphenyl Group in Benzodithiophene (BDT) Units 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, 2017, 卷号: 12, 期号: 7, 页码: 6676-6693
作者: Shen, Wenfei; Tang, Jianguo; Wang, Ning; Wang, Yao; Liu, Jixian

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收藏 | 浏览/下载：25/0 | 提交时间：2017/12/04

New Donor Materials Fluorine Atom Incorporation Increase Oxidation Potential Better Molecular Aggregation Polymer Solar Cell

Progress of new carbon material research in perovskite solar cells 期刊论文 OAI收割
acta physica sinica, 2016, 卷号: 65, 期号: 5
作者: Wang Jun-Xia; Bi Zhuo-Neng; Liang Zhu-Rong; Xu Xue-Qing

收藏 | 浏览/下载：22/0 | 提交时间：2016/12/05

perovskite solar cells new carbon materials counter electrode electron and hole transport materials

博士后出站报告-Irradiation Effects in High Melting Oxides and Synthesis of New Luminescent Composite Materials 学位论文 OAI收割
博士, 2014
作者: Abu Zayed Mohammad Saliqur Rahman

收藏 | 浏览/下载：20/0 | 提交时间：2015/10/13

Irradiation defect high melting oxides F centers luminescence new luminescent composite materials

Design and test of pointing mirror assembly for spaceborne remote sensing camera (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electronics, Communications and Control, ICECC 2011, September 9, 2011 - September 11, 2011, Ningbo, China
作者: Chen W.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

In order to ensure the surface figure of the pointing mirror (460mm long 290mm wide) in spaceborne remote sensing camera Silicon Carbide was selected as the mirror material. The form of composite triangular and rectangular and the combination of open and closed back was explored in the lightweight design. A new kinematic mount and flexible structure in axis is used to hold the mirror around the lateral surface. The structure can minimize distortions induced by coefficient of thermal expansion mismatch among the materials. This eliminates the bending of the integral mount under the weight of the mirror. Optical performance of the mirror was analyzed under gravity load and temperature load using finite element method. Predicted surface figure error based on the removal of bias tilt and power was calculated using an in-house Matlab script for mirrors. The pointing mirror assembly was tested using open loop servo control. And the surface figure was checked using interferometer. Surface figure accuracy is better than 1/30 ( 632.8nm rms). The results show that the kinematic mount induces minimal figure error on the optical surface. 2011 IEEE.

Application of particulate reinforced aluminum matrix composite in airborne photoelectric turret (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
作者: Wang P.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

In order to design and manufacture more excellent airborne photoelectric stable turret modulus of elasticity of 213 GPa and thermal expansion coefficient of 7.9106/K. The frame has decreased the maximum deformation by by 60% and increased the fundamental frequency by 65% as compared with those of aluminum alloy materials a new type of aeronautical material-particulate reinforced aluminum matrix composite (SiC/Al composite) is investigated. Several crucial technologies respectively as shown by finite element analysis results. Those are confirmed by vibration test furthermore. Therefore such as pressureless infiltration technology a significant lightening effect is achieved and the thermal control load is also reduced. The test result indicates that the stable accuracy of the system achieves 19.8rad and the optical-axis parallelism of pay load is 0.1mrad. The research applies the SiC/Al composites to airborne photoelectric platforms interface reaction controls and plate's welding are systematically studied. Then which makes a effective exploration for the new aeronautical material's application. 2011 IEEE. using SiC/Al composites the airborne photoelectric stable turret frame is successfully prepared in density of 2.94 g/ cm3

808nm high-power high-efficiency GaAsP/GaInP laser bars (EI CONFERENCE) 会议论文 OAI收割
Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China
作者: Wang Y.; Wang L.; Wang L.; Wang L.; Liu Y.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

808nm high power diode lasers which is rapidly maturing technology technically and commercially since the introduction in 1999 of complete kilowatt-scale diode laser systems have important applications in the fields of industry and pumping solid-state lasers (DPSSL). High power and high power conversion efficiency are extremely important in diode lasers and they could lead to new applications where space weight and electrical power are critical. High efficiency devices generate less waste heat which means less strain on the cooling system and more tolerance to thermal conductivity variation a lower junction temperature and longer lifetimes. Diode lasers with Al-free materials have superior power conversion efficiency compared with conventional AlGaAs/GaAs devices because of their lower differential series resistance and higher thermal conductivity. 808nm GaAsP/GalnP broad-waveguide emitting diode laser bars with 1mm cavity length have been fabricated. The peak power can reach to 100.9W at 106.5A at quasicontinuous wave operation (200s 1000Hz). The maximum power conversion efficiency is 57.38%. Based on these high power laser bars we fabricate a 1 3 arrays the maximum power is 64.3 W in continuous wave mode when the current is 25.0A. And the threshold current is 5.9A the slope efficiency is 3.37 W/A. 2008 SPIE.

Oxidation of alcohols into corresponding aldehydes or ketones by molecular oxygen 期刊论文 iSwitch采集
Progress in chemistry, 2007, 卷号: 19, 期号: 11, 页码: 1718-1726
作者: Liu Junhua; Wang Fang; Xu Xianlun

收藏 | 浏览/下载：43/0 | 提交时间：2019/05/10

Molecular oxygen Liquid alcohols Oxidation Homogeneous catalysis Heterogeneous catalysis New materials

Fabrication technique of large-scale lightweight SiC space mirror (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China
作者: Zhang G.; Zhang G.; Zhang G.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

Silicon carbide (SiC) is a new type candidate material for large-scale lightweight space mirror. Its low thermal distortion high stiffness high optical quality and its dimensional stability are better than other traditional optical substrate materials such as ULE Zerodure Beryllium (Be) and so on. In this paper the lightweight silicon carbide space mirror blank was fabricated by reaction sintering. As a space born mirror material silicon carbide must be an optical grade ceramic. So we prepared the silicon carbide green body with gel-casting method. Then some carbon materials were supplemented into the green body which will bring reaction-sintering with silicon in a vacuum furnace during 1500-1600C ultimately the reaction bonded silicon carbide was made. The diameter of SiC space mirror blank we have made is 680mm. If expanding the size of the vacuum furnace bigger mirror blank can be obtained. The test results show that the mechanical and thermal properties of RB-SiC are excellent with bending strength of 350MPa fracture toughness of 4.1 MPa·m1/2 and coefficient of thermal expansion(CET) of 2.6710-6/K. The surface roughness(RMS) could be better than 3nm.