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CRYOGENIC MECHANICAL PROPERTIES OF POLYMER NANOCOMPOSITES

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CRYOGENIC MECHANICAL PROPERTIES OF POLYMER NANOCOMPOSITES

中国力学学会学术大会'2005

作者： fu shaoyun (technical institute of physics and chemistry, chinese academy of sciences, beijing 100080, china)

With the rapid development of spacecraft and superconductive cable technologies, polymers are being used in these cryogenic applications. The requirements for polymers in these special applications are quite high and enhanced cryogenic mechanical properties are needed. One effective way to improve cryogenic mechanical properties of polymers is to incorporate nanofillers like SiO2 and MMT into polymers. In this work, epoxy and polyimide nanocomposites containing SiO2 and MMT nanofillers were prepared via in-situ sol-gel process and

关键词： Epoxy resin tensile properties thermal expansion low temperature

Remote sensing of air pollution incorporating integrated-path differential-absorption and coherent-Doppler lidar

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Defence Technology（防务技术） 2024年第1期31卷 594-601页

作者： Ze-hou yang Yong Chen Chun-li Chen Yong-ke Zhang Ji-hui Dong Tao Peng Xiao-feng li Ding-fu Zhou School of physics Beijing Institute of TechnologyBeijing 100081China Southwest institute of technical physics Chengdu 610041SichuanChina School of Optics and Photonics Beijing Institute of TechnologyBeijing 100081China

An innovative complex lidar system deployed on an airborne rotorcraft platform for remote sensing of atmospheric pollution is proposed and *** system incorporates integrated-path differential absorption lidar(DIAL) and coherent-doppler lidar(CDL) techniques using a dual tunable TEA CO_(2)laser in the 9—11 μm band and a 1.55 μm fiber *** combining the principles of differential absorption detection and pulsed coherent detection,the system enables agile and remote sensing of atmospheric *** static tests validate the system’s real-time detection capabilities,including the measurement of concentration-path-length product(CL),front distance,and path wind speed of air pollution plumes over long distances exceeding 4 *** experiments is conducted with the *** of the pollutant concentration and the wind field is carried out in an approximately 1 km slant range over scanning angle ranges from 45°to 65°,with a radial resolution of 30 m and10 *** test results demonstrate the system’s ability to spatially map atmospheric pollution plumes and predict their motion and dispersion patterns,thereby ensuring the protection of public safety.

关键词： Differential absorption liDAR Coherent Doppler lidar Remoting sensing Atmospheric pollution

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Some recent progress in transparent and light emitting polymer nanocomposites

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Some recent progress in transparent and light emitting polym...

2011年全国高分子学术论文报告会

作者： Shao-Yun fu Hong-Mei Xiao Yuan-Qing li yang yang Wan-Nan li Han-Qiao li technical institute of physics and chemistry,chinese academy of sciences,beijing 100190,china

＜正＞Some recent progress has been briefly summarized in transparent and light emitting nanocomposites based on epoxy and silicone resins. It is discussed about how to maintain

关键词： ZnO CdSe Transparency Photoluminescence Nanocomposites

Crystal growth of CsB3O5 from NaF flux

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Crystal growth of CsB3O5 from NaF flux

第14届全国晶体生长与材料学术会议

作者： Guojun Chen1,2 , Yicheng Wu1 , Peizhen fu1 1. technical institute of physics and chemistry, beijing Center for Crystal R&D, chinese academy of sciences, P.O. Box 2711, beijing 100080, P.R. china 2. Graduate School of chinese academy of Science, 10039, P.R. china

Nonlinear optical (NLO) crystal CsB3O5 (CBO) is one of UV NLO materials [1]. It has bigger SHG coefficient, lower absorption edge and moderate refraction. Recently CBO crystals generate 17.7W average

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Two-dimensional materials for future information technology: status and prospects

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Science china(Information sciences) 2024年第6期67卷 1-147页

作者： Hao QIU Zhihao YU Tiange ZHAO Qi ZHANG Mingsheng xu Peifeng li Taotao li Wenzhong BAO yang CHAI Shula CHEN Yiqi CHEN Hui-Ming CHENG Daoxin DAI Zengfeng DI Zhuo DONG Xidong DUAN Yuhan FENG Yu fu Jingshu GUO Pengwen GUO Yue HAO Jun HE Xiao HE Jingyi HU Weida HU Zehua HU Xinyue HUANG Ziyang HUANG Ali IMRAN Ziqiang KONG Jia li Qian li Weisheng li Lei liAO Bilu liU Can liU Chunsen liU Guanyu liU Kaihui liU liwei liU Sheng liU Yuan liU Donglin LU likuan MA Feng MIAO Zhenhua NI Jing NING Anlian PAN Tian-ling REN Haowen SHU litao SUN Yue SUN Quanyang TAO Zi-Ao TIAN Dong WANG Hao WANG Haomin WANG Jialong WANG Junyong WANG Wenhui WANG Xingjun WANG Yeliang WANG Yuwei WANG Zhenyu WANG Yao WE... School of Electronic Science and Engineering Nanjing University School of Integrated Circuits Interdisciplinary Research Center for Future Intelligent Chips (Chip-X)Nanjing University School of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications State Key Laboratory of Infrared physics Shanghai Institute of Technical Physics Chinese Academy of Sciences School of physics and Key Lab of Quantum Materials and Devices of the Ministry of Education School of Electronic Science & EngineeringSoutheast University College of Integrated Circuits State Key Laboratory of Silicon and Advanced Semiconductor MaterialsZhejiang University Suzhou Laboratory State Key Laboratory of Integrated Chips and Systems School of MicroelectronicsFudan University Shaoxin Laboratory Department of Applied physics The Hong Kong Polytechnic University Key Laboratory for Micro-Nano physics and Technology of Hunan Province College of Materials Science and EngineeringHunan University College of Integrated Circuits Zhejiang University Shenzhen Geim Graphene Center Shenzhen Key Laboratory of Layered Materials for Value-Added ApplicationsTsinghua-Berkeley Shenzhen Institute & Institute of Materials ResearchTsinghua Shenzhen International Graduate SchoolTsinghua University State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZijingang CampusZhejiang University National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences CAS Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications i-LabSuzhou Institute of Nano-Tech and Nano-Bionics (SINANO)Chinese Academy of Sciences College of chemistry and Chemical Engineering Hunan University Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education) Department of PhysicsRenmin University of China School

Over the past 70 years, the semiconductor industry has undergone transformative changes,largely driven by the miniaturization of devices and the integration of innovative structures and materials. Two-dimensional(2D) materials like transition metal dichalcogenides(TMDs) and graphene are pivotal in overcoming the limitations of silicon-based technologies, offering innovative approaches in transistor design and functionality, enabling atomic-thin channel transistors and monolithic 3D integration. We review the important progress in the application of 2D materials in future information technology, focusing in particular on microelectronics and optoelectronics. We comprehensively summarize the key advancements across material production, characterization metrology, electronic devices, optoelectronic devices, and heterogeneous integration on silicon. A strategic roadmap and key challenges for the transition of 2D materials from basic research to industrial development are outlined. To facilitate such a transition, key technologies and tools dedicated to 2D materials must be developed to meet industrial standards, and the employment of AI in material growth, characterizations, and circuit design will be essential. It is time for academia to actively engage with industry to drive the next 10 years of 2D material research.

关键词： two-dimensional (2D) materials information technology production technology standardization of characterization microelectronicdevices optoelectronic devices multi-functional integration

EFFECT OF MONTMORILLONITE ADDITION ON MECHANICAL CHARACTERIZATIONS OF POLYIMIDE NANOCOMPOSITE FILMS

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Acta Mechanica Solida Sinica 2005年第3期18卷 200-206页

作者： Wang Xishu Zhang Yihe fu shaoyun Feng Xiqiao Department of Engineering Mechanics FML Tsinghua University Beijing 100084 China Cryogenic Materials Laboratory Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100080 China

Tensile deformation and fracture characteristics of polyimide/montmorillonite nanocomposite films are investigated to enhance the particular mechanical properties and understand the effective factors in dominating the mechanical properties of nanocomposites, such as the nanolayer, matrix and nanolayer/matrix interface. How to contribute to the mechanical properties of nanocomposite film is a very complex problem. In this paper, these factors are analyzed based on the addition amount and fracture mechanics. The results indicate that the specimen at 20 wt% MMT breaks prematurely with a fracture strength （σb = 78 MPa） much lower than that （σb = 128 MPa） at the 1 wt% MMT. However, the Young＇s modulus （3.2 GPa） of the former is higher than that （1.9 GPa） of the latter. Fractography also indicates that the brittle cracking formed in high content addition is the main cause of failure but microscopically ductile fracture morphology still exists locally. And for the trace element addition, the smaller threading slipping veins are evenly distributed on the entire fracture section of these films. Therefore, these characteristics would presumably be associated with both the concentration effects of size of nanocomposite sheets and the increasing deformation harmony in nanolayers.

关键词： nanocomposite film polyimide/montmorillonie fractography failure characterization SEM

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76-m分辨率火星全球彩色影像数据集

Science Bulletin 2024年第14期69卷 2183-2186页

作者：刘建军任鑫严韦陈王丽曾兴国张晓霞谭旭高兴烨付强刘定心郭林张庆张菁菁余国彬何志平耿言张荣桥李春来 Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China University of chinese academy of sciences Beijing 100049China institute of Optics and Electronics Chinese Academy of SciencesChengdu 610209China Shanghai institute of technical physics Chinese Academy of SciencesShanghai 200083China Lunar Exploration and Space Engineering Center Beijing 100190China

Remote-sensing images of Mars contain rich information about its surface morphology,topography,and geological *** data are fundamental for scientific research and *** to china’s first Mars exploration mission,data from six advanced optical imaging systems of different missions in the Martian orbit had been used to generate Mars global/near-global image datasets with spatial resolutions of better than 1 km:the visual imaging system of Mariner 9,visual imaging subsystem cameras of Viking 1 and 2,Mars Orbiter Camera-Wide Angle(MOC-WA)of the Mars Global Surveyor(MGS),Context Camera(CTX)of the Mars Reconnaissance Orbiter(MRO),High Resolution Stereo Camera(HRSC)of Mars Express(MEX),and Thermal Emission Imaging System(THEMIS)of the Mars Odyssey Orbiter[1,2].

关键词： Odyssey Express Remote Camera

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Well-Deformed Oblate K Isomers Induced by Oblate Intruder States

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chinese physics Letters 2001年第6期18卷 750-752页

作者： xu fu-Rong Department of technical physics Peking UniversityBeijing 100871 MOE Key Laboratory Institute of Heavy Ion PhysicsPeking UniversityBeijing 100871 institute of Theoretical physics Chinese Academy of SciencesBeijing 100080

With configuration-constrained potential energy surfaces,it has been found that the neutron-deficient Z≈82 nuclei can have well-deformed oblate K isomers which are formed by exciting quasiparticles to the proton i_(13/2) and h_(9/2) oblate intruder *** achieve the configuration constrained calculations,the maximum-overlap method of wavefunctions is *** the present calculations of quasiparticle states,quadrupole pairings are *** observed K^(π)=11^(-) isomer in 188Pb is confirmed to be oblately deformed,with energy consistent with the *** low-lying oblate isomeric states are predicted for ^(187)Tl.

关键词： deformed constrained quasi

Packing diagram—application of cone packing model in lanthanide extraction

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chinese Journal of chemistry 1985年第4期 380-383页

作者： SUN Peng-Nian The University of Science and Technology of china,Hefei SHI Jie Petroleum School,Tianjing University,Tianjing FENG Xi-Zhang xu Ying-Ting WANG Hai-Dong li Xing-fu Application Department,The institute of High Energy physics,Academia Sinica,beijing,P.O.Box 2732WANG Wen-Qing YI Min Department of technical physics,beijing University,beijing

"Coordination saturation,,15 50 far widely used in extraction although it 15 quite a eon-fused *** ean either understand it as saturation with valenee and eoordination七leetrons to form a inert gas formulism,or as sat... 详细信息

关键词： Packing diagram TBP