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Quantum secret sharing between m-party and n-party with six states

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Science china(Physics,Mechanics & Astronomy) 2009年第8期52卷 1191-1202页

作者： GAO Ting1,YAN FengLi2,3 & LI YouCheng2,3 1 College of Mathematics and Information Science,hebei Normal University,shijiazhuang 050016,china 2 College of Physics and Information Engineering,hebei Normal University,shijiazhuang 050016,china 3 hebei advanced thin films laboratory,shijiazhuang 050016,china College of Mathematics and Information Science Hebei Normal University Shijiazhuang China College of Physics and Information Engineering Hebei Normal University Shijiazhuang China hebei advanced thin films laboratory Shijiazhuang China

A quantum secret sharing scheme between an m-party group and an n-party group is proposed using three conjugate bases.A sequence of single photons,each of which is prepared in one of the six states,is used directly to encode classical information in the quantum secret sharing *** this scheme,each of all m members in group 1 chooses randomly his/her own secret key individually and independently,and directly encodes his/her respective secret information on the states of single photons via unitary operations,then the last one sends 1/n of the resulting qubits to each member of group *** measuring their respective qubits,all members in group 2 share the secret information shared by all members in group *** renders impossible a Trojan horse attack with a multi-photon signal,a fake-signal attack with EPR pairs,an attack with single photons,and an attack with invisible *** give the upper bounds on the average success probabilities for dishonest agent eavesdropping encryption using the fake-signal attack with any two-particle entangled states.

关键词： quantum secret sharing security EPR pairs

TiO_2 thin film photocatalyst

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Rare Metals 2004年第4期23卷 289-295页

作者： YUJiaguo StateKeylaboratoryofadvancedTechnologyforMaterialsSynthesisandProcessing WuhanUniversityofTeclmologyWuhan430070China

It is well known that the photocatalytic activity of TiO_2 thin filmsstrongly depends on the preparing methods and post-treatment conditions, since they have a decisiveinfluence on the chemical and physical properties of TiO_2 thin films. Therefore, it is necessary toelucidate the influence of the preparation process and post-treatment conditions on thephoto-catalytic activity and surface microstructures of the films. This review deals with thepreparation of TiO_2 thin film photo-catalysts by wet-chemical methods (such as sol-gel,-reversemicellar and liquid phase deposition) and the comparison of various preparation methods as well astheir advantage and disadvantage. Furthermore, it is discussed that the advancement ofphotocatalytic activity, super-hydrophilicity and bactericidal activity of TiO_2 thin filmphotocatalyst in recent years.

关键词： inorganic non-metal materials TiO_2 thin films preparation sol-gel method liquid phase deposition method reverse micellar method photocatalytic activity super-hydrophilicity bactericidal activity

Microwave Magnetic Properties of Laminates with thin FeCoBSi films

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Journal of Wuhan University of Technology(Materials Science) 2011年第5期26卷 857-860页

作者：陆海鹏 State Key laboratory of Electronic thin films and Integrated Devices University of Electronic Science and Technology of China

The microwave permeability of laminated composites based on thin FeCoBSi films was under *** level of permeability increased with increasing of the ferromagnetic inclusions in the *** intrinsic permeability spectra of ferromagnetic inclusion are parametrically *** obtained parameters of magnetic resonance were specially *** avoid the effect of eddy current and to obtain large-volume fractions of ferromagnetic constituent,laminates consisting of alternating FeCoBSi/SiO2 multi-layers and mylar substrates were also *** the same volume fractions of ferromagnetic constituent （8.7%）,laminates based on multi-layered films are found to possess higher values of permeability than those based on one-layered films.

关键词： microwave permeability resonance frequency multi-layer magnetic films

Layer-by-layer assembly carbon nanotubes thin film based gas sensors for ammonia detection

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Science china(Information Sciences) 2011年第12期54卷 2700-2706页

作者： SUN Ping 1,2 , JIANG YaDong 1* , XIE GuangZhong 1 , DU XiaoSong 1 , LI Xian 1 & HU Jia 1 1 School of Optoelectronic Information, State Key laboratory of Electronic thin films and Integrated Devices, University of Electronic Science and Technology of china (UESTC), Chengdu, 610054, china 2 Life and Physical Science College, Sichuan Agricultural University, Ya’an 625014, china School of Optoelectronic Information State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China (UESTC) Life and Physical Science College Sichuan Agricultural University

Single walled carbon nanotubes (SWNTs) were deposited on interdigital electrode (IDE) devices and quartz crystal microbalance (QCM) devices through layer-by-layer self-assembly method to fabricate resistance sensitive and mass sensitive gas sensors, respectively. Their ammonia gas-sensitive characteristics were detected at different temperature. It is revealed that the SWNTs based mass sensitive gas sensor has good sensing properties at room temperature. However, the SWNTs based resistance sensitive gas sensor has irreversible response for ammonia gas. When the temperature increases, the noise of SWNTs based mass sensitive gas sensor increases and the gas sensitive characteristic decreases. Meanwhile, the humidity effect is also discussed. It is important to optimize gas sensor by making it work at an appropriate external environment.

关键词： layer-by-layer self-assembly carbon nanotube gas sensor

Novel thin plate element theory based on a continuity re-relaxed technique

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Science china(Technological Sciences) 2010年第9期53卷 2450-2457页

作者： CUI XiangYang,LI GuangYao & ZHENG Gang State Key laboratory of advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082,china State Key laboratory of advanced Design and Manufacturing for Vehicle Body Hunan University

thin plate problem has been receiving much interest due to its wide application in *** this paper,a novel thin plate element theory is proposed based on a continuity re-relaxed technique to avoid the high continuity requirement for thin plate formulation which needs the high computation *** problem is first discretized into a set of background cells with field nodes,and only deflection field is treated as the field *** top of the background cells,the integration domains are further *** curvatures over integration domains are restructured through the divergence theorem,and the continuity requirement of the trial deflection function for thin plate problems can be *** Galerkin weak form is then used to create the discretized system *** curvatures in the integration domains are constant,and the stiffness matrix of the system can be computed directly without numerical *** rotational essential boundary conditions are imposed in the process of curvature field *** numerical examples are computed using the RPIM approximation *** excellent results demonstrate the efficiency of the proposed method.

关键词： thin plate problem continuity re-relaxed curvature field restructured Galerkin weak form

Factors Affecting the Growth of SiC Nano-whiskers

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Journal of Materials Science & Technology 2010年第11期26卷 1041-1046页

作者： Y.F.Chen,X.Z.Liu and X.W.Deng State Key laboratory of Electronic thin films and Integrated Devices,University of Electronic Science and Technology of china,Chengdu 610054,china State Key laboratory of Electronic thin films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China

Silicon carbide （SiC） is a IV-IV compound semiconductor material with a wide band *** electronic devices and circuits made from SiC are presently developed for high-temperature,high-power,and high-radiation conditions,in which conventional semiconductors cannot be adequately *** this paper,SiH4 and C2H2 were used to synthesize SiC *** Ni was the *** nanowhiskers were grown by vapor-liquid-solid *** effects of the H2 flow rate,growth temperature,catalyst thickness and growth pressure to grow SiC nano-whiskers were studied.3C-SiC thin film and nano-tips can be synthesized by controlling the growth conditions.

关键词： SiC Nano-whisker Vapor-liquid-solid

Effects of annealing on structural, optical and electrical properties of Al-doped ZnO thin films

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Science china(Physics,Mechanics & Astronomy) 2004年第5期47卷 588-596页

作者： CHEN Yanwei1,2, YU Wenhua1 & LIU Yichun1,2 1. Centre for advanced Optoelectronic Functional Material Research, Northeast Normal University, Changchun 130024, china 2. Key laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130021, china Centre for advanced Optoelectronic Functional Material Research Northeast Normal University Changchun China Key laboratory of Excited State Processes Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun China

In this paper, the structural, electrical and optical properties of Al-doped zinc oxide (ZnO: Al) thin films onto quartz substrates prepared by electron beam evaporation technique were studied. All samples are polycrystal with a hexagonal structure andc-axis preferred orientation. The intense UV emissions and weak deep-level green emissions were observed. The films show high transparency, conductivity and high carrier concentration. Van der Pauw measurements show that the films are n-type degenerate semiconductor. The lowest resistivity is 6.7×10?4 Ω⊙cm at room temperature. These films exhibit a carrier density above 1020 cm?3. The conduction mechanism was discussed. The behavior of metallic conduction can be observed in the high temperature range.

关键词： ZnO: Al thin film, photoluminescence, electrical properties, structural properties, Van der Pauw measurement.

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 Engineering,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 Tianjin University of Technology College of Electronics Information Engineering Tianjin China (GRID:grid.265025.6) Tianjin University of Technology Tianjin Key Laboratory of Film Electronic and Communication Devices Tianjin China (GRID:grid.265025.6) Nankai University Institute of Photo-Electronics Thin Film Devices and Technique Tianjin China (GRID:grid.216938.7) (ISNI:***)

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 =24.9 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

Surface geometry and magnetism of Eu@C60 monolayer on Ag（111）

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Science china(Physics,Mechanics & Astronomy) 2012年第9期Mechanics & Astronomy) .卷 1589-1593页

作者： ZHAO ZhiWei 1,2,WANG Jing 1,2 & LIU Ying 1,2*1 Department of Physics,hebei Normal University,and hebei advanced thin Film laboratory,shijiazhuang 050016,china 2 National Key laboratory for Materials Simulation and Design,Beijing 100083,china

The surface geometry,electronic structure,and magnetism of Eu@C 60 monolayer absorbed on Ag(111) have been investigated within the framework of density functional *** Eu@C 60 monolayer has been constructed on Ag(111) substrate by one of the hexagon faces of C 60 downward and its mirror plane face parallel to Ag(111).The Eu@C 60 monolayer induces a reconstruction of the Ag(111) substrate and the perpendicular distance between the Eu@C 60 and Ag(111) surface is 2.06,being shorter than that between C 60 and Ag(111) surface by *** is no chemical bond formed between the Eu@C 60 and Ag(111),and only 0.55e transferred from Ag(111) to Eu@C 60.A large magnetic moment about 6.80 B per unit cell is found for Eu@C 60 /Ag(111) system.

关键词： endohedral fullerene two-dimensional C 60 domain magnetic organic molecule