反射电子显微术原理和应用

本文介绍了反射电子显微术的基本原理、方法及应用．反射电子显微术分辨率高，可同时得到有关表面形貌和结构的重要信息，可进行表面结构变化的动态观察，可用来观察表面单原子高度台阶、位错、表面相变及有关现象．     

Entropy of Nonstatic Black Hole with the Internal Global Monopole and the Generalized Uncertainty Relation

The new equation of state density is obtained by the utilization of the generalized uncertainty relation. With the help of coordinates and the Wentzel-Kramers-Brillouin approximation, direct calculation of the scalar field entropy of the non-state black hole with an internal global monopole is performed. The entropy obtained from the calculation is proportional to the horizon area. The calculation can be free from convergence if without any cutoff, which is different from the brick-wall method. However, the pertinent result is limited.     

Super-Resolution of Interference Pattern with Independent Laser Beams

We propose a scheme to achieve super-resolution of interference pattern with independent laser beams. We perform an experimental observation of a double-slit interference with two orthogonally polarized laser beams. The resolution of the interference pattern measured by a two-photon detection is doubled provided the two beams illuminate the double-slit with certain incident angles. The scheme is simple and can favour both high intensity and perfect visibility.     

光学材料热光系数的精确测量——“热光系数仪”

本文介绍用于光学材料系数精确测量的“热光系数仪”。该仪器采用两种干涉仪组合、微机控制和数据采集处理等设计方案,实现了高精度测量。低温区热膨胀系数α、折射率温度系数β热光系数W的测量精度可达±3×10~(-7)°C~(-1)。     

Intersections and polar functions of fractional brownian sheets

Let B^H={B^H（t）,t∈R^N＋}be a real-valued（N,d）fractional Brownian sheet with Hurst index H=（H1,…,HN）.The characteristics of the polar functions for B^H are discussed.The relationship between the class of continuous functions satisfying Lipschitz condition and the class of polar-functions of B^H is obtained.The Hausdorff dimension about the fixed points and the inequality about the Kolmogorov’s entropy index for B^H are presented.Furthermore,it is proved that any two independent fractional Brownian sheets are nonintersecting in some conditions.A problem proposed by LeGall about the existence of no-polar continuous functions satisfying the Holder condition is also solved.     

倍增型有机光电探测器的研究进展

介绍了倍增型有机光电探测器的发展、工作机理、性能调控及相关的应用探索. 2015年张福俊课题组以单载流子传输通道的给受体混合(质量比约为100:1)薄膜为有源层，率先报道了界面附近受陷电子诱导空穴隧穿注入的倍增型有机光电探测器，并抑制了器件的暗电流密度.通过优化有源层厚度调控了界面附近受陷电荷的体分布，制备出超窄响应的倍增型有机光电探测器，并提出载流子注入窄化的新概念.利用三元策略及双层策略，制备出了宽响应倍增型有机光电探测器.利用光子俘获层调控器件的响应范围，以及利用倍增层获得了较大的外量子效率，将二极管型与倍增型器件的优势集中在一个器件中.引入光学调控层或将宽带隙材料引入有源层中，调控界面附近受陷电子分布，优化了器件的光谱形状，进而制备出响应光谱宽且平的倍增型有机光电探测器.将制备的倍增型有机光电探测器应用到心率监测、单像素成像及光开关等领域，取得较好的应用成果.     

The Explicit Computations of the Bergman Kernels on Generalized Hua Domains

The Bergman kernel function plays an important role in several complex variables. Thereexists the Bergman kernel function on any bounded domain in Cn. But we can get the Bergmankernel functions in explicit formulas for a few types of domains only, for instance, the boundedhomogeneous domains and the egg domains in some cases.Yin Weiping defined four types of generalized Hua domainsGHE1(N1,… Nr; m, n,p1…,pr, k)where wj = (wi1,…, wjNj ),j = 1, 2,…, r. RI(m, n), RⅡ(p), RⅢ(q), and RⅣ…     

A.第十九届国际高速摄影和光子学会议概况

本文对第19届国际高速摄影与光子学会议做了简介,主要谈到了光机式相机、高速视频技术、全息和干涉计量。