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介电函数的
    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
    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
    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.
    The correct expression for the renormalized dielectric function is given and its significances are discussed.
    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。
    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.
    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。
    (ii) It seems that for silicon, a higher sensitivity for the surface imperfection may beobtained with the real part ∈' of the dielectric function than its imaginary ∈" in the wavelengthrange of E_1.
    (ⅱ)在E_1结构附近,用介电函数的实部B'(hv)区分表层质量的微细差异,似乎比用其虚部B"(hv)效果更佳.
    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.
    well (QW) structures are studied. The variation of dielectric function due to electric field and the corresponding spectral line shapes of PR of QW_s are analysed on the basis of the Stark effect modulation of non-excitonic and excitonic interband transitions. The experimental results for GaAs/AlGaAs QW agree well with the theoretical analysis.
    研究了量子阱材料光反射光谱的电调制机理,根据斯塔克效应,对量子阱中非激子的带间跃迁和激子跃迁两种情况,分析了电场引起的介电函数的改变和相应的光反射调制光谱线形,对GaAs/AlGaAs量子阱所得光反射光谱的实验结果与理论分析基本符合.
    The general analytical expression of the infrared dielectric function is given for the Ⅳ-Ⅵ compound semiconductor with multi-valley energy band structure in the classical limit. A semi-classical treatment is realized by combining the dielectric function with the k·P model.
    给出了经典极限下多能谷Ⅳ-Ⅵ族化合物半导体在磁场下的红外介电函数的一般解析表达式,并通过与k·P模型的结合给出了红外介电函数的半经典处理途径。
    By means of detailed calculation of the infrared die-lectric function of the typical Ⅳ-Ⅵ compound semiconductor PbTe, we have discus-sed for the influence of the non-parabolic property of energy band and the free carrier distribution among the four valleys on the infrared dielectric function.
    通过对典型Ⅳ-Ⅵ族化合物半导体材料PbTe红外介电函数的计算,讨论了能带非抛物性和载流子浓度在多能谷体系中的分布效应对红外介电函数的影响。
    Extending the three point scaling used in the analysis of the electric reflective spectrum,the third derivative spectra of the dielectric functions can be analyzed. The experimental results of reflective spectra of weak electric field modulation were obtained and compared with that of the dielectric function spectra,the sensitivity and resolution ratio increase remarkably.
    把用来分析电反射谱的三点法推广到分析介电函数的三级微商谱,得到弱电场调制反射谱的实验结果,并与介电函数谱的结果加以比较,使灵敏度和分辨率有很大提高
    Extending the three - point - scaling used in the analysis of the electric reflective spectrum, the first and third derivative spectra of the dielectric functions can be analyzed . The experimental results of reflective spectra of wavelength modulation and weak electric field modulation were obtained and compared with that of dielectric function spectra. The sensitivity and resolution ratio increase remarlkably.
    将用于分析电反射谱的三点法推广用于分析介电函数的一级和三级微商谱,得到波长调制和弱电场调制反射谱的实验结果,并与介电函数谱的结果加以比较,使灵敏度和分辨率有很大提高。
    Extending the three-point-scaling used in analyzing the electric reflective spectrum, the first and third derivative spectra of the dielectric functions can be analyzed. The experimental results of reflective spectra of wavelength modulation and weak electric field modulation are obtained and are compared with that of dielectric function spectra,which shows that the sensitivity and resolution are remarkably improved.
    将用于分析电反射谱的三点法推广用于分析介电函数的一级和三级微商谱,得到波长调制和弱电场调制反射谱的实验结果,并与介电函数谱的结果加以比较,使灵敏度和分辨率有很大提高
    The dispersed microstructure model for three-component metal-dielectric composite materials was established, a convenient formula for calculating the effective dielectric function of multi-component composites was deduced. The theoretical calculations about the optical absorptive spectra of (Au,Ag)/SiO2 composite films predicted the existence of multi-resonance absorptive peaks, which were compared with the measured absorptive spectra.
    本文提出了三组份金属颗粒-介质复合体系的一种弥散结构模型,推导出其有效介电函数的关系式,利用该关系式可以很方便地求解出多组份复合体系的有效介电函数值.对(Au,Ag)/SiO2三组份复合体系的光吸收系数进行了理论计算,计算结果给出了多共振吸收峰的存在,与实验测量的光吸收谱进行了对比.
    The calculated results indicate that the dielectric function, complex reflectivity index and absorption spectra of the crystal are related to the electronic structures of the crystal.
    介电函数的虚部、吸收光谱、折射率等的峰值位置存在一一对应关系,这与电子从价带到导带的跃迁吸收有关.
    The imaginary part of the dielectric function was obtained directly from the band structure calculation.
    介电函数的虚部由能带结构的计算直接得到.
    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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