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The effect of the Kerr nonlinearity on the transmission through the nanoslit gold film

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science china(Physics,Mechanics & Astronomy) 2010年第3期53卷 474-480页

作者： XIE SuXia1,2, LI HongJian1,2, XU HaiQing1, ZHOU Xin1, 2, FU ShaoLi1 & WU JinJun1 1 college of Physics science and Technology, central south university, changsha 410083, china 2 college of materials science and engineering, central south university, changsha 410083, china 1. college of Physics science and Technology Central South University Changsha 410083 China2. College of Materials Science and Engineering Central South University Changsha 410083 China

This paper has made a theoretical study of enhanced transmission through a gold grating with arrays of subwavelength slits filled with nonlinear Kerr medium. The results of the research are based on rigorous finite-difference time domain calculations. The resonance transmission peaks in the investigated wavelength range are produced as a result of the surface plasmon resonance collaborated with the localized waveguide resonance. The paper also gives a detailed analysis of the influence exerted by various factors: thickness, third-order susceptibility and line refractive index of the nonlinear medium filled in the gold slits arrays and the incident intensity to the transmission. It is found that the small changes of parameters such as medium thickness, third-order susceptibility and line refractive index of the nonlinear medium filled in the gold slits arrays as well as the incident intensity can bring great changes of lateral shift and magnitude variation of the transmission resonance peaks. The report proposes that these phenomena can be applied to designing precise optical switches.

关键词： slit array nonlinear medium localized waveguide resonance surface plasmon resonance Kerr nonlinear effect

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两个重要不等式

数学的实践与认识 2002年第6期32卷 1041-1051页

作者：刘心歌唐美兰刘心笔中南大学数学科学与计算技术学院长沙410083 中南大学材料学院长沙410083

本文引入了 P[a](x)类的权函数 ,定义了一类新型卷积 ,推广了 Hilbert不等式。

关键词： Hilbert不等式权卷积不等式有界算子

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新世纪钪的应用开发和科技发展前景

稀有金属与硬质合金 2002年第3期30卷 38-41页

作者：李力姜锋李汉广圣彼得堡国立矿业工业大学中南大学材料科学与工程学院湖南长沙410083

分析了钪科技发展的历史和现状 ,讨论了钪科技发展中存在的问题 ,并指出问题的核心是要把含钪产品的价格和成本降低到用户能接受的水平 ,提高钪及其产品的应用开发水平 ,从而提高我国钪及其制品的国际竞争能力。目前的研究重点是开发含... 详细信息

分析了钪科技发展的历史和现状 ,讨论了钪科技发展中存在的问题 ,并指出问题的核心是要把含钪产品的价格和成本降低到用户能接受的水平 ,提高钪及其产品的应用开发水平 ,从而提高我国钪及其制品的国际竞争能力。目前的研究重点是开发含钪中间合金的低成本生产新技术及含钪铝合金的工业应用。

关键词：钪铝钪合金应用开发科技发展

Production,Properties and Microstructures of Mg-RE-Zn-Zr(RE=MM,Nd) Alloy

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Journal of materials science & Technology 2002年第4期18卷 378-380页

作者： Kun YU, Wenxian LI and Songrui LIcollege of materials science and engineering, central south university, changsha 410083, china Coll. of Mat. Sci. and Eng. Central South Univ. Changsha 410083 China

The Mg-MM and Mg-Nd master alloys were prepared through the ingot metallurgy method under the protection of a special flux. The thermodynamic behaviors of different rare earth elements in the molten Mg alloys were investigated. Two experimental alloys, Mg-3.0 wt pct MM-0.7 wt pct Zn-0.7 wt pct Zr and Mg-2.8 wt pct Nd-0.7 wt pct Zn-0.7 wt pct Zr, were prepared. The hardness and tensile properties of experimental alloys were measured and the microstructures were observed. The results showed that the rare earth elements could react greatly with the Mg chloride in the flux. The Mg-Nd-Zn-Zr alloy displayed a good aging hardening effect. The dispersed metastable phase ? (Mg3Nd) is an important strengthening phase to improve the tensile properties of this alloy. So the Mg-Nd-Zn-Zr alloy has better tensile properties and elongation than those of the Mg-MM-Zn-Zr alloy, and the ductile fracture character could be observed. The microvoid coalescence is the dominant fracture mechanism in this alloy.

关键词： Mg-RE-Zn-Zr alloy Rare earth Microstructures and properties

Ti/Al_2O_3 Functionally Gradient Material Prepared by the Explosive Compaction/SHS Process

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Journal of materials science & Technology 1999年第3期15卷 271-275页

作者： Yimin LI(Powder Metallurgy Research Institute, central-south university of Technology, changsha 410083, china)Ziqiao ZHENG(Department of materials science and engineering, central-south university of Technology, changsha 410083, china) Cent S Univ Technol Powder Met Res Inst Changsha 410083 Peoples R China Cent S Univ Technol Dept Mat Sci & Engn Changsha 410083 Peoples R China

Ti1Al2O3 Functionally Gradient Material (FGM) was prepared by an explosive compaction/SHS process. Ten sheets of the compounding powder were laminated and pressed to get a green body of FGM. It was then compacted explosively By burying the explosive compaction body into a stoichiometric Al/TiO2 mixture and igniting the combustion of the stoichiometric Al/TiO2 mixture, the SHS reaction of the explosive compaction body was initiated by the heat released from the combustion of the stoichiometric Al/TiO2 mixture. In this way, Ti/Al2O3 FGM was synthesized. The adiabatic temperatures of each gradient layer were calculated when the preheating temperatures were 298 K and 1173 K, respectively The microstructure, composition and properties of Ti/Al2O3 FGM and the reaction mechanism of each gradient layer were studied. It was found that Ti/Al2O3 FGM prepared by the explosive compaction/SHS process had a high density and a high microhardness. Its structure, composition and properties showed apparent gradient distribution. The structure of the standard stoichiometric ratio gradient layer of FGM was a network structure. Its reaction mode could be described as follows: Al powder melted first, then the molten Al penetrated into the TiO2 zone and reacted with TiO2, and big pores were left in the original positions of Al powder. The reaction of gradient layers with the addition of Al3O3 as diluents was similar to that of the standard stoichiometric ratio gradient layer, so were their structure and composition. However, the reaction of gradient layers with the addition of Ti as diluents was more complex and the composition deviated slightly from the designed one

关键词： Al SHS Ti/Al2O3 Functionally Gradient Material Prepared by the Explosive Compaction/SHS Process

Determination of phase equilibria in the Ni-Ta-Zr system at 1223 K

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Rare Metals 2003年第3期22卷 160-163页

作者： PAN Ximiao and JIN ZhanpengPhase Diagram and materials Design Center, School of materials science and engineering, central south university, changsha 410083, china Phase Diagram and materials Design Center School of Materials Science and Engineering Central South University Changsha 410083

The phase equilibrium relations of the ternary Ni-Ta-Zr system at 1223 K wereinvestigated by means of diffusion triple and electron probe microanalysis (EPMA) techniques. Twoternary compounds were found and a series of tie lines and tie triangles have been determined. Themaximum solubility of Ta in NiZr_2 is about 13.5% (atom fraction). The corresponding tentativeisothermal section at this temperature was constructed based on current experimental information.

关键词： phase diagram diffusion triple nickel EPMA Ni-Ta-Zr system

ELECTRON DIFFRACTION PATTERNS ANALYSIS OF PRECIPITATES IN LD_(10) ALLOY

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中国有色金属学会会刊：英文版 1995年第3期5卷 119-123页

作者： Jin, Tounan Yin, Zhimin(Department of materials science and engineering,central south university of Technology, changsha 410083) central south Univ of Technology Changsha China

ＥＬＥＣＴＲＯＮＤＩＦＦＲＡＣＴＩＯＮＰＡＴＴＥＲＮＳＡＮＡＬＹＳＩＳＯＦＰＲＥＣＩＰＩＴＡＴＥＳＩＮＬＤ_（１０）ＡＬＬＯＹ￥Ｊｉｎ，Ｔｏｕｎａｎ；Ｙｉｎ，Ｚｈｉｍｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳ... 详细信息

ＥＬＥＣＴＲＯＮＤＩＦＦＲＡＣＴＩＯＮＰＡＴＴＥＲＮＳＡＮＡＬＹＳＩＳＯＦＰＲＥＣＩＰＩＴＡＴＥＳＩＮＬＤ_（１０）ＡＬＬＯＹ￥Ｊｉｎ，Ｔｏｕｎａｎ；Ｙｉｎ，Ｚｈｉｍｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎｄＥｎｇｉｎｅｅｒ?..

关键词： precipitate simulated diffraction pattern transformation matrix

EFFECTS OF TRACE Zr ON FATIGUE CRACK GROWTH RATE OF HIGH DAMPING Zn-Al ALLOY

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中国有色金属学会会刊：英文版 1996年第3期6卷 92-95页

作者： Zhou Shanchu Luo Binghui (Department of materials science and engineering,central south university of Technology, changsha 410083) CENT S UNIV TECHNOL DEPT MAT SCI & ENGNCHANGSHA 410083PEOPLES R CHINA

ＥＦＦＥＣＴＳＯＦＴＲＡＣＥＺｒＯＮＦＡＴＩＧＵＥＣＲＡＣＫＧＲＯＷＴＨＲＡＴＥＯＦＨＩＧＨＤＡＭＰＩＮＧＺｎ－ＡｌＡＬＬＯＹ￥ＺｈｏｕＳｈａｎｃｈｕ；ＬｕｏＢｉｎｇｈｕｉ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓ... 详细信息

ＥＦＦＥＣＴＳＯＦＴＲＡＣＥＺｒＯＮＦＡＴＩＧＵＥＣＲＡＣＫＧＲＯＷＴＨＲＡＴＥＯＦＨＩＧＨＤＡＭＰＩＮＧＺｎ－ＡｌＡＬＬＯＹ￥ＺｈｏｕＳｈａｎｃｈｕ；ＬｕｏＢｉｎｇｈｕｉ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎｄＥｎｇｉｎｅｅ...

关键词： Zr Zn-Al alloy fatigue crack growth rate internal friction

EVOLUTION　OF　MICROSTRUCTURE　IN　OXIDATIVE　GROWTH　OF　Al_2O_3／Al　ALLOY　COMPOSITES

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中国有色金属学会会刊：英文版 1996年第3期6卷 122-126页

作者： Xia Changqing Jin Zhanpeng(Department of materials science and engineering,central south university of Technology, changsha 410083) CENT S UNIV TECHNOL DEPT MAT SCI & ENGNCHANGSHA 410083PEOPLES R CHINA

ＥＶＯＬＵＴＩＯＮＯＦＭＩＣＲＯＳＴＲＵＣＴＵＲＥＩＮＯＸＩＤＡＴＩＶＥＧＲＯＷＴＨＯＦＡｌ_２Ｏ_３／ＡｌＡＬＬＯＹＣＯＭＰＯＳＩＴＥＳ￥ＸｉａＣｈａｎｇｑｉｎｇ；ＪｉｎＺｈａｎｐｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａ... 详细信息

ＥＶＯＬＵＴＩＯＮＯＦＭＩＣＲＯＳＴＲＵＣＴＵＲＥＩＮＯＸＩＤＡＴＩＶＥＧＲＯＷＴＨＯＦＡｌ_２Ｏ_３／ＡｌＡＬＬＯＹＣＯＭＰＯＳＩＴＥＳ￥ＸｉａＣｈａｎｇｑｉｎｇ；ＪｉｎＺｈａｎｐｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎｄ...

关键词： oxide layer Al2O3/Al alloy composites oxygen activity