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dielectric function     
相关语句
  介电函数
     We have calculated the optical properties(the imaginary part of the dielectric function ε 2(ω) ,the optical absorption coefficient I(ω) ,the reflectivity R(ω) ) of tetragonal and cubic crystals of KTa 0 5 Nb 0 5 O 3 by the full potential linearized augmented plane wave method (FLAPW).
     用全电势线性缀加平面波法 (FLAPW)计算了KTa0 5Nb0 5O3四方相和立方相的光学特性 ,即介电函数虚部ε2 (ω)、光学吸收系数I(ω)和反射率R(ω) .
短句来源
     The direct-and indirect-band gaps are equal to 3.53 and 3.80 eV,respectively. The complex dielectric function and optical constants,such as optical conductivity spectra,absorption coefficient,refractive index,extinction coefficient,energy-loss spectrum and reflectivity,are calculated. Distinct interband transitions are observed around 8.45 and 12.27 eV corresponding O 2p→Zr 4d T2g and O 2p→Zr 4d Eg transitions.
     SrZrO3的直接带隙及间接带隙的大小分别为3.53,3.80 eV,同时基于电子能带结构对SrZrO3的光导率、介电函数、反射谱、吸收谱、能量损失谱、折射系数和湮灭系数等光学性质进行分析,表明光导率在8.45,12.27 eV处存在O 2p→Zr 4d T2g及O2→44的带间跃迁。
短句来源
     The imaginary part of dielectric function ε_2(ω)of amo-rphous quantum dots is also studied.
     还研究了非晶量子点的介电函数虚部ε_2(ω)。
短句来源
     High optical transparency of GaN film induces strong interference oscillations below E_(0)(3.44 eV) in the measured dielectric function spectra and reflectance spectra.
     在介电函数和反射谱中,GaN高的透明性(<3.44 eV)诱导了强的干涉振荡。
短句来源
     c) The dielectric function spectra show metal feature for the Σ phase Fe (1-x) Co xSi 2 samples.
     c)对于Σ相的 Fe( 1 - x) Cox Si2 样品 ,其介电函数谱呈现出明显的金属态特征。
短句来源
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  介电常数
     It is also found that the dielectric function of Si has some anisotropic properties at the interface.
     同时发现,在界面上Si的介电常数具有轻度的各向异性。
短句来源
     The micro electronic structure information of metal Mo was obtained by the first-principle method, and with these imformation, we have calculated polarization matric elements of the medium precisely. The imaginary part of dielectric function and optical conductivity of Mo have been given. Theoritical results are in good agreement with experiment.
     用第一性原理方法得到了金属Mo的微观电子结构信息,并用电子结构信息精确计算了介质极化矩阵元,从而给出了Mo的介电常数虚部和光电导谱.理论结果与实验符合甚佳.
短句来源
     Using the variational method,we calculate the binding energy of the screening exciton in the type-Ⅱ quantum wells,discuss the effects of the well width and the electric field on the spatially dependent screening, and compare the influence between the spatially dependent dielectric function and the dielectric constant on the exciton binding energy.
     应用变分方法,计算了第Ⅱ类量子阱中屏蔽激子的束缚能; 讨论了势阱宽度和电场对空间屏蔽效应的影响,并比较了空间依赖介电函数与介电常数对激子束缚能的影响。
短句来源
     A series of Ni x SiO 2(1- x ) granular films were made by a magnetron rf sputtering system with variation of x and the annealing process. Both the complex dielectric function and magneto optical polar Kerr spectra of the samples were measured at room temperature in the 1.5~4.5eV photon energy range, respectively. It was found that there are new spectral features in the dielectric functions.
     用磁控溅射法制备了一系列 Nix Si O2 (1 - x) 样品 ,并对部分样品作快速退火处理 ,室温下采用椭圆偏振光谱仪和磁光谱仪分别在 1.5~ 4.5 e V的光子能量区测量了样品的复介电常数谱和极向复磁光克尔谱 ,研究了这种金属 -绝缘体型颗粒膜的光学和磁光性质 .
短句来源
     Born-Huang equations of lattice dynamics for the ternary mixed crystal AB_(1-x)C_x by using the random-element-isodisplacement model(REI model) were set up,and the dielectric function and the far-infrared reflectivity of lattice vibration in several ternary mixed crystals were discussed.
     采用无序元素孤立位移模型(REI mode),建立了三元混晶AB1-xCx晶格动力学的Born-Huang方程,并由此出发讨论了几种三元混晶晶格振动的介电常数和远红外反射谱。
短句来源
  介电函数的
     Influence of Temperature on Dielectric Function Response in Metal/Dielectric Composite Media
     温度对金属/绝缘电介质复合物介电函数的影响
短句来源
     INITIAL ANALYSIS OF EFFECTIVE MEDIUM THEORY TO DIELECTRIC FUNCTION CHANGE OF NANOMETAL FILM
     利用有效媒质理论对纳米金属薄膜介电函数的初步分析
短句来源
     With band gap correction,the real part of the dielectric function was derived from the imaginary part by Kramers-Kronig(K-K) dispersion relationship.
     经带隙校正后,由Kramers-Kronic(K-K)色散关系计算了介电函数的实部.
短句来源
     We demonstrated the first and the third differential spectra, Kramers-Kronig transformation and other integral relations of Si dielectric function measured by ellipsometric spectroscopy and compared them with those by other numerical methods.
     分析了由椭偏光谱法测得的Si介电函数的一阶和三阶微分谱,Kramers-Kronig变换以及其它积分关系,并与其它数值方法的结果比较.
短句来源
     Applying the Drude-Sommerfeld free electron model of metal particles, and considering the contribution of the interband transitions to the dielectric function, the absorption spectra were simulated by the Maxwell-Granett theory.
     根据Drude-Sommerfeld自由电子气模型,并考虑电子带间转换对介电函数的贡献,运用Maxwell-Granett有效媒质理论模拟吸收率与入射波之间的关系.
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  “dielectric function”译为未确定词的双语例句
     In order to understand the difference of optical properties between the ferroelectric and paraelectric NaNO_2,the imaginary part of dielectric function ε_2(ω) ,the optical absorption coefficient I(ω) and R(ω) the reflectivity R(ω) were calculated.
     为了更好地理解亚硝酸钠在铁电相和顺电相间光学性质的差异 ,计算了它的介电虚部ε2 (ω)、光吸收系数I(ω)及反射系数R(ω) .
短句来源
     With the high speed development of modern communication, the trend to miniaturization、 high frequency and integration of mobile communication system intensively requires research and development of new dielectric function ceramics.
     随着现代通信技术的高速发展,移动通讯系统的小型化、高频化和集成化发展趋势对研究与开发高性能的新型介电功能材料提出了强烈要求。
短句来源
     The quantative correction to the dielectric function is about 5—10% for various materials.
     修正量在5~10%之间,其大小视材料而定。
短句来源
     A METHOD IMPROVED TO RECKON THE DIELECTRIC FUNCTION FROM THE INCOMPLETE FAR INFRARED REFLECTION SPECTRUM
     非完整红外反射光谱中介电函数推算方法的改进
短句来源
     The composition and refractive index of GaInAsSb quaternary semiconductor material for photodetector operating at 2.4μm are obtained by using interpolation and models of dielectric function.
     本文用线性插值和介电常数的计算模型,得到了GaInAsSb 四元系2.4μm探测器材料的组份及其折射率。
短句来源
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  dielectric function
The calculations are based on the exactly solved model of a sharp metal/electrolyte interface, the model of a Born sphere for the ion, and the three-mode approximation for the dielectric function of the solvent.
      
Parameters of the analytical expression used for the dielectric function ε(k) of the solvent are selected so as to reproduce the results of calculations of the ε(k) function obtained by a molecular dynamics method.
      
The complex dielectric function of the films was determined from the experimental data by dispersion analysis of the reflection spectra.
      
This effect is related to the fact that a contribution to the dielectric function of slow ions, determining the scattering amplitude, depends on both spatial and frequency dispersion.
      
The k-dependent semiclassical dielectric function is employed instead of the Lindhard-Mermin expression.
      
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By analysing the dielectric function of an interacting Bloch electron gas, the condition for the formation of acoustic plasmons (AP) as well-defined quasiparticles in metals has been derived. Discussions are given on whether this condition is satisfied for A-15 compounds, with the conclusion that the evidence for the existence of AP as a kind of quasiparticle in these compounds is insufficient until now.

本文从相互作用布洛赫电子气的介电函数出发,导出了金属中存在确定的声学等离激元的条件,并对A-15化合物是否满足这个条件作了讨论,认为在A-15化合物中声学等离激元的存在尚缺乏足够的证据。

A renormalization procedure for the perturbative manipulation of Vlasov-Poisson equation has been proposed in this paper. By the graphical expansion method the theory is shown to be renormalizable to any order, and the renormalized propagator is given. The physical meaning of the coherent terms and the absolute incoherent terms is analyzed. The correct expression for the renormalized dielectric function is given and its significances are discussed. By comparison with previous renormalization theory, it...

A renormalization procedure for the perturbative manipulation of Vlasov-Poisson equation has been proposed in this paper. By the graphical expansion method the theory is shown to be renormalizable to any order, and the renormalized propagator is given. The physical meaning of the coherent terms and the absolute incoherent terms is analyzed. The correct expression for the renormalized dielectric function is given and its significances are discussed. By comparison with previous renormalization theory, it is pointed out that this procedure is a true complete renormalization.

本文提出对Власов-Poisson方程进行微扰处理的一种重整化方案。利用图形展开方法证明了该理论到任意阶微扰的可重整化性质。给出了重整化传播量的一般形式。分析了相干项和绝对非相干项的物理意义。给出了重整化介电函数的正确表示,并对它的意义做了讨论。通过和以往重整化理论的比较,指出这种重整化方案是一种真正的完全重整化。

The purturbative expressions for response function R and inverse dielectric function ε-1 has been established in the paper by using the concept of the coherent renormalization according to their primitive definition. By comparing the obtained equations with those in the MSR scheme, we pointed out that the two agree quite well in form with each other at least within the sixth order, and thus justified the reliability of the coherent renormalization. The differences between the two were analysed in more...

The purturbative expressions for response function R and inverse dielectric function ε-1 has been established in the paper by using the concept of the coherent renormalization according to their primitive definition. By comparing the obtained equations with those in the MSR scheme, we pointed out that the two agree quite well in form with each other at least within the sixth order, and thus justified the reliability of the coherent renormalization. The differences between the two were analysed in more detail and its relation with DIA were also discussed.

本文利用相干重整化的概念,从响应函数R和逆介电函数的基本定义出发,建立了它们的微扰表达式。把所得到的基本关系和MSR体系的类似关系进行比较,指出至少在六级微扰之内二者在形式上符合得相当好,从而验证了相干重整化方案的合理性。对相干重整化与MSR体系之间的差异做了进一步的分析,并对它与DIA的关系做了某些讨论。

 
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