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PREPARATION AND SURFACE CHARACTERIZATION OF TiO2.THIN FILMS ON GLASS BY MAGNETRON SPUTTERING METHOD

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Acta Metallurgica Sinica(English Letters) 2002年第2期15卷 207-209页

作者： L.S.Yin1,3), H. Shen2. and J.X. Zhang3) 1)college of information {2., Central South University, Changsha 410075, china 2.Guangzhou Institute of Energy Conversion, CAS, Guangzhou 510070, china 3)Department of physics, Zhongshan University, Guang college of information {2. Central South University Changsha 410075 China

Ti thin films were firstly deposited on glass substrates by magnetron sputtering method, then sintered the Ti thin films in air atmosphere and finally TiO2.transparence thin films on glass substrates were obtained. The structure and surface morphologies of the thin films were characterized by X-ray diffraction and SEM. The growth process of the thin films has been observed. The annealing time and annealing temperatures have an affect on the growth of the films.

关键词： TiO2. thin film. magnetron sputtering

THE EXISTENCE OF SOLUTIONS OF NONLINEAR BOUNDARY VALUE PROBLEMS INVOLVING THE p-LAPLACIAN OPERATOR IN L^s-SPACES

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Journal of Systems Science & Complexity 2005年第4期18卷 511-521页

作者： WEI Li (School of Mathematics and Statistics, Hebei University of Economics and Business, shijiazhuang 050061, china Institute of Applied Mathematics and Mechanics, Ordnance {2. college, shijiazhuang 050003, china. ZHOU Haiyun (Institute of Applied Mathematics and Mechanics, Ordnance {2. college, shijiazhuang 050003, china Institute of Mathematics and information Science, Hebei Normal University, shijiazhuang 050016, china. School of Mathematics and Statistics Hebei University of Economics and Business Shijiazhuang 050061 China

By using the perturbation theories on sums of ranges of nonlinear accretive mappings of Calvert and Gupta, we study the abstract results on the existence of a solution u ∈ L^s （Ω） of nonlinear boundary value problems involving the p-Laplacian operator, where 2. s〈＋∞, and 2./N＋1 〈 p ≤ 2.for N（≥ 1） which denotes the dimension of R^N. To obtain the result, some new techniques are used in this paper. The equation discussed in this paper and our methods here are extension and complement to the corresponding results of L. Wei and Z. He.

关键词： Maximal monotone operator accretive mapping hemi-continuous mapping p-Laplacian operator nonlinear boundary value problem.

Preparation of nanocrystalline BaTiO_3 ceramics

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Science china(Technological Sciences) 2009年第6期52卷 1730-1734页

作者： DENG XiangYun1,2.LI DeJun1,LI JianBao2.WANG XiaoHui3 & LI LongTu3 1 college of physics and Electronic {2.,Tianjin Normal University,Tianjin 300387,china 2.Materials and Chemical engineering Institute,Key Laboratory for Hainan Advantage Resources and Applied Technology in Chemical engineering Material of Ministry of Education,Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti,Hainan University,Haikou 5702.8,china 3 Department of Materials Science and engineering,Tsinghua University,Beijing 100084,china college of physics and Electronic {2. Tianjin Normal University Tianjin 300387 China Materials and Chemical engineering Institute Key Laboratory for Hainan Advantage Resources and Applied Technology in Chemical Engineering Material of Ministry of Education Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Hainan University Haikou 570228 China Department of Materials Science and engineering Tsinghua University Beijing 100084 China

The high-dense nanocrystalline BaTiO3(BT)ceramics with grain size smaller than 100nm have been successfully prepared by the two step sintering and the spark plasma sintering(SPS)*** successive transitions in nanograin BT ceramics from rhombohedral to orthorhombic,tetragonal and cubic transitions,similar to those in coarse BT ceramics,were revealed by in-situ temperature dependent Raman *** multiphase coexistence and the diffused phase transition character were demonstrated in the 8nm nanocrystalline BT ceramics.

关键词： nanocrystalline BaTiO3 ceramics preparation microstructure size effect

Er^(3+)-Yb^(3+) codoped borosilicate glass for optical thermometry

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Science china(physics,Mechanics & Astronomy) 2010年第5期53卷 848-851页

作者： FENG ZhiQing1,BAI Lan2.CAO BaoSheng1,GONG LiDong3 & DONG Bin1,4 1 School of Science,Dalian Nationalities University,Dalian 116600,china 2.college of Electromechanical & {2. engineering,Dalian Nationalities University,Dalian 116600,china 3 School of Chemistry and Chemical engineering,Dalian 11602.,china 4 Institute of physics,Chinese Academy of Sciences,Beijing 100190,china 1. School of Science Dalian Nationalities University Dalian 116600 China2. College of Electromechanical & Information Engineering Dalian Nationalities University Dalian 116600 China3. School of Chemistry and Chemical Engineering Dalian 116029 China4. Institute of Physics Chinese Academy of Sciences Beijing 100190 China

Infrared to green up-conversion emissions centered at the wavelengths of about 52. and 550 nm of the Er3+-Yb3+ codoped borosilicate glass are recorded,using a 978 nm semiconductor laser diode(LD) as an excitation *** fluorescence intensity ratio(FIR) of the green up-conversion emissions at about 52. and 550 nm in the Er3+-Yb3+ codoped borosilicate glass has been studied as a function of temperature over the temperature range of 2.5-873 *** maximum sensitivity and the temperature resolution derived from the FIR of the green up-conversion emissions are approximately 0.0038 K-1 and 0.2.K,*** is demonstrated that the prototype optical temperature sensor based on the FIR technique from the green up-conversion emissions in the Er3+-Yb3+ codoped borosilicate glass plays a major role in temperature measurement.

关键词： Er3+-Yb3+ codoped optical temperature sensor fluorescence intensity ratio

Influence of p-layer on the performance of n-i-p μc-Si:H thin film solar cells

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Science china(physics,Mechanics & Astronomy) 2010年第11期53卷 2042-2046页

作者： YUAN YuJie 1,2.ZHANG KaiLiang 1,2.WEI Zhen 1,2.& GENG XinHua 3 1 college of Electronics information {2.,Tianjin University of Technology,Tianjin 300384,china 2.Tianjin Key Laboratory of Film Electronic and Communication Devices,Tianjin University of Technology,Tianjin 300384,china 3 Institute of Photo-Electronics Thin Film Devices and Technique,Nankai University,Tianjin 300071,china 1. college of Electronics information {2. Tianjin University of Technology Tianjin 300384 China2. Tianjin Key Laboratory of Film Electronic and Communication Devices Tianjin University of Technology Tianjin 300384 China3. Institute of Photo-Electronics Thin Film Devices and Technique Nankai University Tianjin 300071 China

The high pressure radio frequency plasma enhanced chemical vapor deposition (RF-PECVD) process was adopted to prepare the n-i-p microcrystalline silicon solar cells,the influence of p-type layers on the performance of the solar cells was investigated,and the optimum p layer suited to the n-i-p microcrystalline silicon solar cells was *** experimental results demonstrate that the performance of the solar cells can be highly affected by the structural and optical properties of the p-layers,and the performance of solar cells can be greatly improved by optimizing p *** have achieved an initial active-area efficiency of 8.17% (V oc =0.49 V,J sc =2..9 mA/cm 2.,FF=67%) for the μc-Si:H single-junction n-i-p solar cells and an initial active-area efficiency of 10.93% (V oc =1.31 V,J sc =13.09 mA/cm 2.,FF=64%) for the a-Si:H/μc-Si:H tandem n-i-p solar cells.

关键词： microcrystalline silicon solar cells quantum confinement effect p-type layers

Transition of Growth Mode in Homoepitaxy on Metal Surface

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Communications in Theoretical physics 2007年第7期48卷 175-178页

作者： WU Li-Li LU Hang-Jun WU Feng-Min college of Mathematics and physics,{2. engineering,Zhejiang Normal University,Jinhua 32.004,china college of Mathematics and physics Information Engineering Zhejiang Normal University

The process of the multilayer growth of Pt on Pt(111)is studied by using a Monte Carlo model with realisticphysical *** effects of the substrate temperature,the ES barrier,and the deposition rate on the growthmode have been *** transitions of the surface roughness from oscillatory to non-oscillatory behaviorand then back to oscillatory behavior are observed while increasing the substrate temperature from 2.0 K to 62. *** found that the growth mode depends strongly on ES barrier over the whole temperatures and the deposition rate ofatoms effectively affects the growth *** simulation results are consistent with many experimental observationsfor homoexpitaxy on a Pt(111)substrate.

关键词： growth mode transition Monte Carlo simulation surface roughness oscillation

Elastic differential cross sections of electron scattering by CF4 at intermediate energies

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原子与分子物理学报 2000年第1期17卷 82-85页

作者： JIANG Yu hai 1,LI Ji ming 2.SUN Jin feng 1,WAN Ling de 1 (1, Department of physics, college of physics and information engineering, Henan Normal University, Xinxiang, Henan 453002.2. Department of physics, Henan college of Education, Zhengzhou Henan 45003) 河南师范大学河南新乡 4530 0 2 河南教育学院河南郑州 45003

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1　ＩＮＴＲＯＤＵＣＴＩＯＮＣａｒｂｏｎｔｅｔｒａｆｌｕｏｒｉｄｅ(ＣＦ4)ｉｓｏｎｅｏｆｔｈｅｍｏｓｔｗｉｄｅｌｙｕｓｅｄｃｏｍｐｏｎｅｎｔｓｏｆｆｅｅｄｇａｓｍｉｘｔｕｒｅｓｅｍｐｌｏｙｅｄｆｏｒａｖａｒｉｅｔｙｏｆｐｌａｓｍａａｓｓｉｓｔｅｄｍａｔ...

关键词： elastic differential cross sections CF 4 independent atom model

Molecular dynamics simulation of adsorption of an oil-water-surfactant mixture on calcite surface

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Petroleum Science 2009年第1期6卷 76-81页

作者： Lu Guiwu Zhang Xuefen Shao Changjin Yang Hong Department of Mathematics and physics China University of Petroleum Beijing 102249 China Basic Department of Beijing information engineering {2. Beijing 100081 China

An interface super molecular structure model for oil-water-surfactant mixture and calcite was established. By using a molecular dynamics method, the effects of rhamnolipid, sodium dodecyl benzene sulfonate and sodium hexadecyl sulfonate on the interface adsorption behavior of oil molecules were investigated. It was found that these three surfactants could reduce oil-calcite interface binding energy, and play a role of oil-displacing agent.

关键词： Oil calcite adsorption molecular dynamics

Investigation of nano-talc as a filling material and a reinforcing agent in high density polyethylene (HDPE)

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Rare Metals 2006年第z1期25卷 422-425页

作者： CHEN Nanchun MA Lei ZHANG Tao Center for Material engineering Guilin Institute of Technology Guilin 541004 China Key Laboratory of Nonferrous Materials and Processing Technology Ministry of Education Guilin Institute of Technology Guilin 541004 China Department of Physics and Information Technology Yulin Teachers'' College Yulin 537000 China Center for Material Engineering Guilin Institute of Technology Guilin 541004 China Key Laboratory of Nonferrous Materials and Processing Technology Ministry of Education Guilin Institute of Technology Guilin 541004 China

An experiment of producing high density polyethylene (HDPE) nano-composite filled with 4wt.% talc was presented. Acting as filler and a reinforcing agent in the HDPE, talc powder, sized at around 5 μm, was surface-treated with aluminum diethylene glycol dinitrate coupling agent before adding to the HDPE. Analyses of the reinforced HDPE nano-composite show significant improvement in its mechanical properties including, tensile strength (>2. MPa), break elongation (2. MPa), and friction coefficients<0.11. The results demonstrate that, after surface-treated, talc can be used as a promising filling material and a reinforcing agent in making HDPE nano-composite.

关键词： HDPE talc filling material reinforcing agent nano-composite mechanical properties