偏压磁控溅射法在柔性衬底上制备ZnO:Al透明导电膜

用射频偏压磁控溅射法,在水冷透明聚脂胶片上制备出了附着力强的ZnO:Al(Aluminium dopedZinc Oxide,AZO)透明导电膜,膜的最小电阻率为1.11×10-3Ωcm,薄膜的透过率高于85%.薄膜为多晶纤锌矿结构,垂直于衬底的C轴具有[002]方向的择优取向.重点探讨了薄膜的结构、光电性质与衬底所加负偏压的关系。     

衬底偏压对ZnO：Zr薄膜结构及光电性能的影响

以Zn：Zr（Zr片贴在金属Zn靶上面）为溅射靶材,利用直流反应磁控溅射法在Ar／O_2混合气氛中制备Zr掺杂ZnO（ZnO：Zr）薄膜．在制备ZnO：Zr薄膜时,衬底偏压在0～60V之间变化．研究结果表明,衬底偏压对薄膜的结构、光学及电学性能有很大影响．当衬底偏压从0增大到60V时,薄膜的平均光学透过率和平均折射率都单调增大,而薄膜的晶粒尺寸先增大后减小．ZnO：Zr薄膜电阻率的变化规律与晶粒尺寸相反．     

衬底偏压对VC纳米薄膜摩擦学性能的影响

采用磁控溅射技术, 通过改变衬底偏压在室温下制备系列VC薄膜, 并考察衬底偏压对VC薄膜晶体结构、 硬度及摩擦磨损性能的影响, 建立相互间的内在联系. 结果表明, 随着衬底偏压的增高, 薄膜的晶粒逐渐细化, 薄膜硬度逐渐增大, 耐磨损性能得到提高, 摩擦系数变化较小.     

衬底负偏压溅射对ZrN薄膜性能的影响研究

本文采用S-抢磁控溅射系统淀积ZrN薄膜,用扫描电镜、X射线衍射、反射电子衍射、俄歇电子能谱和电学测量等方法研究了衬底负偏压溅射和溅射两种工艺方法淀积的ZrN薄膜的结构、组分和薄膜电阻率。结果表明,适当增大溅射功率,采用衬底负偏压溅射方法,有效地减少了氧的沾污,使得所淀积的ZrN薄膜的电学性能有明显改善。     

负偏压对六方氮化硼薄膜沉积特性的影响

利用射频磁控溅射法在n型Si(100)衬底上沉积六方氮化硼薄膜(h-BN),采用AFM、Raman、XPS、FTIR等技术研究负偏压对所沉积薄膜生长模式、结构、表面粗糙度、薄膜取向、相变等特性的影响。结果表明,当负偏压为0V时,沉积所得h-BN薄膜表面粗糙度较低、结晶性良好、c轴垂直于衬底且以层状模式生长;随着负偏压的增加,薄膜由层状模式生长转变为岛状模式生长,表面粗糙度增加,且h-BN经亚稳相E-BN和wBN向c-BN转变,使得BN薄膜相系统更加混乱,不利于高质量层状h-BN薄膜的获取。     

衬底偏压对γ-′Fe_4N薄膜磁性的影响

采用直流磁控溅射方法, 以Ar/N2(N2/(Ar N2)=10%)为放电气体, 在Si(100)单晶衬底上获得了γ′-Fe4N薄膜样品. 利用X射线衍射(XRD)和振动样品磁强计(VSM)研究衬底偏压对γ′-Fe4N薄膜样品的影响. 结果表明, 随着衬底负偏压的增大, γ′-Fe4N薄膜样品的晶胞参数减小, Fe和N的化合效率与样品的致密度提高, 表面缺陷减少, 矫顽力降低.     

衬底偏压对磁溅射生长氮化碳薄膜的影响

采用非平衡磁溅射方法，在不同衬底偏压条件下，在Ｓｉ（００１）衬底上制备出氮化碳薄膜．实验发现，氮化碳薄膜的沉积率取决于衬底偏压．通过对红外、电子能量损失谱的测试分析发现，衬底偏压对氮化碳薄膜中原子间的键合情况也有一定的影响．     

衬底偏压对γ′-Fe4N薄膜磁性的影响

采用直流磁控溅射方法, 以Ar/N₂（N₂/(Ar+N₂)=10％）为放电气体, 在Si(100)单晶衬底上获得了γ′-Fe₄N薄膜样品. 利用X射线衍射(XRD)和振动样品磁强计(VSM)研究衬底偏压对γ′-Fe₄N薄膜样品的影响. 结果表明, 随着衬底负偏压的增大, γ′-Fe₄N薄膜样品的晶胞参数减小, Fe和N的化合效率与样品的致密度提高, 表面缺陷减少, 矫顽力降低.      

衬底偏压对γ’-Fe4N薄膜磁性的影响

采用直流磁控溅射方法，以Ar／N2（N2／（Ar＋N2）=10％）为放电气体，在Si（100）单晶衬底上获得了γ＇-Fe4N薄膜样品。利用x射线衍射（XRD）和振动样品磁强计（VSM）研究衬底偏压对γ＇-Fe4N薄膜样品的影响。结果表明，随着衬底负偏压的增大，γ＇-Fe4N薄膜样品的晶胞参数减小，Fe和N的化合效率与样品的致密度提高，表面缺陷减少，矫顽力降低。     

PZT／Si异质结的电特性研究

采用Ｓｏｌ／Ｇｅｌ工艺制备ＰＺＴ／Ｓｉ结构，从该结构的极化特性、开关特性和Ｉ－Ｖ特性等方面研究了硅衬底上铁电薄膜的自偏压异质结特性．并以这种效应分析了ＦＲＡＭ电容中铁电薄膜的疲劳机制．     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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     

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