基于白光干涉术的微器件三维表面形貌恢复研究

白光干涉测量技术是光学测量中一种非常重要的方法。介绍了白光干涉测量的原理及系统构成,提出了基于局部峰点插值提取白光干涉信号包络的算法。对局部峰点插值提取包络算法的实现和数据处理的过程进行了讨论,得到了清晰的三维表面形貌图像。     

等厚干涉法测量薄膜厚度的两种方法

等厚干涉法测量薄膜厚度设备简易,操作方便,分析直观,在生产中有着广泛的应用.本文探讨了两种等厚干涉法测量薄膜厚度的原理与方法,利用预先形成的薄膜台阶产生空气或透明材料劈尖,单色光在劈尖上下两界面的反射光发生相干叠加产生干涉条纹,通过条纹相关参数的测量,获得薄膜的厚度.通过比较,空气劈尖法较之薄膜劈尖法操作更简易、准确,因而更实用.     

表面平整度测量的新方法研究

介绍了用反射干涉频谱法测量透明或半透明薄膜表面平整度的方法，薄膜厚度的测量范围约在0．2－20μm（小于20μm）之间。在对二氧化硅薄膜的测试中，该测试方法与椭圆偏振仪的测试结果相比较，其纵向测量误差小于2nm。通过光纤传感器的薄膜下的移动，对薄膜下各点的反射光谱进行分析，得到各点的厚度。通过步进电机的移动，连续测量膜上不同点的厚度，从而获得薄膜的表面形貌。该方法对薄膜无破坏作用，且无需测量干涉条纹，与其他的非接触式测试方法相比较，具有无横向测试范围限制、测试系统结构简单、测试精度高、测试结果可靠的特点，因此有较强的实用性。     

用像面全息二次曝光法测量温度场的研究

提出了一种新的测量温度场的光学方法，即像面全息二次曝光法．利用该方法，测量并分析了轴对称温度场的分布情况．结果表明，该方法可以减小检测时反射波的影响．通过增强物光强度，可以提高干涉图样的对比度．同时在白光下可再现温度场的干涉条纹，从而得到不同输入功率下直线热源的干涉图样，实现了温度场的可视化．     

光学轮廓仪测量原理及其误差分析

文中介绍了光学轮廓仪的测量原理及其误差分析。提出了一种干涉相位差与检偏器方位角成线性关系的微分干涉显微镜．应用相移干涉技术，实现了对表面轮廓的高精度测量。由于采用了共光路干涉体系，仪器对机械振动等外界干扰不敏感，在一般场合下测量精度可优于 １ｎｍ。     

弱吸收薄膜光学参数的自泵浦相位共轭干涉测…

采用一种新方法－自泵浦相位共轭干涉测量法，测量弱吸收薄膜的光学参数：折射率、吸收率数以及厚度。实验结果表明，该方法具有操作简便，并能自动消除相位畸变等优点。     

膜厚对柔性ZnO∶Ga透明导电薄膜结构和电学性能的影响

室温下采用直流磁控溅射法在PI衬底上制备出具有优异光学性能的ZnO∶Ga透明导电薄膜.研究结果表明,制备了具有C轴择优取向的六角纤锌矿结构的多晶GZO透明导电薄膜.讨论了薄膜厚度对PI衬底上制备ZnO∶Ga薄膜的结构、表面形貌和电学性质的影响.实验数据表明,一定同质缓冲层可有效降低薄膜应力,改善薄膜性能,所得GZO薄膜厚度为129nm时,电阻率具有最小值3.2×10-4Ω.cm.     

应用于太阳能电池的AZO透明导电薄膜光学性质研究

以铝掺杂氧化锌陶瓷靶作为溅射源,采用射频磁控溅射工艺在玻璃衬底上制备了掺铝氧化锌（AZO）透明导电薄膜,利用全光谱拟合法计算了AZO薄膜的光学常数和厚度,研究了厚度对AZO薄膜光学性质的影响.结果表明：拟合光谱曲线与实测光谱曲线一致,薄膜的光学性能与厚度密切相关,AZO薄膜折射率表现为正常的色散特性.另外还采用包络法计算了AZO薄膜的折射率和厚度,两种方法所得结果基本相符.     

弱吸收薄膜光学参数的自泵浦相位共轭干涉测量分析

采用一种新方法——自泵浦相位共轭干涉测量法,测量弱吸收薄膜的光学参数:折射率、吸收系数以及厚度,实验结果表明,该方法具有操作简便,并能自动消除相位畸变等优点。     

用光干涉法测定高聚物的折射率、热膨胀系数和研究其相态转变

本文用光干涉法测定了几种透明固体高聚物薄膜的折射率,其精度为10~(-4),并在-60～120℃范围内,测量了光在样品中传播的光程随温度变化的曲线。从该曲线上得出了高聚物样品的玻璃转变温度、热膨胀系数和折射率温度系数等有用资料。结果表明,光干涉法是测定高聚物的光学、热学性质和研究其相态转变的简单、灵敏的实验方法之一。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with