电磁波在多层介质内的透射

导了多层介质中透射电磁波的电场振幅与介质表面入射电磁波场电场振幅之间的关系式，引入了一个母函数，通过微分可以生成介质各层中的透射波。     

图像采集自动生物显微镜系统自动调焦的研究

阐述了以ＣＣＤ为光电探测器件，采用步进电机驱动，集工作台自动扫描、自动调焦和图像的自动采集为一体的显微镜系统自动调焦机理，改进了均方差评价函数，完成了自动调焦，为显微图像的采集和处理提供了强有力的手段。     

衍射光学元件的解析分析方法

从波动光学传播的菲涅尔衍射出发，探讨一次光学转换形成任意要求的图形的问题。导得两平行传播平面的函数关系，从而在确定像面分布的条件下可以逆求出原始面的振幅与倍相分布。文中给出了几个实例，充分表明这是有实用价值的一种衍射光学元件设计方法。     

Soft mode dynamics of perovskite type crystals

The soft mode dynamics and related properties of perovskite, ABO₃-type crystals have been studied using the operator form of the model Hamiltonian proposed by Pytte. The correlations have been evaluated using the double time thermal Green’s function technique and Dyson’s equation. Without any decoupling, the higher order correlations, appearing in the dynamical equation, have been evaluated using the renormalized Hamiltonian. The dielectric properties are directly related to the optical soft mode. The phonon width and shift have been calculated for different structural phases. The analysis of the temperature dependence of microwave loss tangent and dielectric constant explains the experimental results.     

A neutral gas model for electron swarms

A BGK-type Boltzmann equation for a neutral gas is considered as a model for electron swarms, because the gas and the electron Boltzmann equation have a common diffusion approximation. Both full- and half-range theory are developed using orthogonality methods of solution. Preliminary comparisons with diffusion theory are presented.     

Melnikov's criterion for nondifferentiable weak-noise potentials

The stationary probability density of Fokker-Planck models with weak noise is asymptotically of the form exp[–1 /(q)]. If is smooth, it satisfies a Hamilton-Jacobi equation at zero energy and can be interpreted as the action of an associated Hamiltonian system. Under this assumption, has the properties of a Liapounov function, and can be used, e.g., as a thermodynamic potential in nonequilibrium steady states. We consider systems having several attractors and show, by applying Melnikov's method to the associated Hamiltonian, that in general is not differentiable. A small perturbation of a model with differentiable leads to a nondifferentiable . The method is illustrated on a model used in the treatment of the unstable mode in a laser.     

金属Al背电极二维AZO光栅的制备和陷光特性

研究了背电极金属Al膜上二维ZnO:Al光栅的制备及其反射光谱特性.在厚度为300 nm的Al膜上溅射80 nm ZnO:Al薄膜,旋涂AZ5206光刻胶,用波长为325 nm的激光进行光刻制作光栅掩模.采用溶脱-剥离法在Al衬底上制备周期(624~1250 nm)和槽深(100~300 nm)可独立调控的ZnO:Al二维光栅.表面形貌采用原子力显微镜和扫描电镜观察,反射光谱用带积分球的分光光度计测试,双向反射分布函数用散射仪测量.结果表明,300 nm Al膜上织构二维ZnO:Al光栅背电极结构,当光栅槽深为228 nm,周期从624 nm增加到986 nm时,背电极总反射率、漫反射率以及雾度均随光栅周期增大而显著增加,而当周期从986 nm增加到1250 nm时,总反射率、漫反射率以及雾度略有增加.双向反射分布函数测试结果进一步证实了上述实验结果,即随着周期增大,漫反射峰值越大,衍射峰个数也增多.提示背反电极上槽深为228 nm、周期为986 nm的二维ZnO:Al光栅具有较好的散射效果,其中漫反射占总反射的百分比为45%.     

牛顿第三定律与介质中的静电场

本文根据静电场的唯一性定理,运用两介质区内的电势分布试探函数Φ１和Φ２,证明两均匀介质中位于无限大分界平面两侧的电荷之间的相互作用力服从牛顿第三定律     

正交函数分光光度法测定安痛定注射液中氨基比林的含量

本文采用正交函数分光光度法测定安痛定注射液中氨基比林的含量。６个测试点波长为２５７．２６１,２６５,２６９,２７３,２７７ｎｍ。氨基比林浓度在５－２５μｇ．ｍＬ＾－１范围内与Ｐ２呈良好的线性关系,回归方程为Ｐ２－０．０１８－０．０３２９ｃ,ｒ＝０．９９９９。平均回收率为１００．３％,ＲＳＤ为０．４０％。本法与河北省地方标准比较,结果无显著性差异。     

柱面镜-光栅谐振腔模式与频率选择特性

用福克－李的数值迭代法对柱面镜－光栅谐振腔在中心波长为１０．６μｍ处进行了理论分析,给这场和远场的模式分布以及频率选择损耗函数。