Antireflective characteristics of triangular shaped gratings

It is well known that conventional multi-layers are oftenused for antireflective coatings[1,2]. There are, however,only a handful of optical materials available, thus limit-ing the performance that could ideally be achieved. Onthe other hand, sub-wavelength structure surfaces, whichare surface-relief gratings with periods smaller than theincident wavelength, have been researched and foundto have antireflective properties[3,8]. Compared withstandard optical thin-film coating technologies, the h…     

Nd3 :Gd3Ga5O12激光晶体的吸收与发光

测量了用提拉(CZ)法生长的Nd3+Gd3Ga5O12(NdGGG)激光晶体室温时的吸收光谱,其中在806 nm处的吸收系数最大(α＝5.12 cm-1),吸收截面为4.03×10-20 cm2.用806 nm激发分别得到室温和10 K时的荧光光谱和荧光寿命,其中在1.06 μm附近晶体的荧光发射强度最强,2种温度时的峰值发射截面分别为1.7×10-19 cm2和1.9×10-19 cm2.0.6 at%和1.0 at%2种Nd3+掺杂浓度的晶体,室温时的荧光寿命分别为251 μs和240 μs,10 K温度时分别为253 μs和241 μs.与NdYAG晶体的荧光寿命、浓度猝灭效应和发射截面进行了比较,对结果进行了分析与讨论.     

手术腔镜的清洗及灭菌处理

文中简要介绍了对手术腔镜进行清洗、消毒灭菌操作的重要性，具体操作方法，以及清洗过程中应注意的事项。     

无电解镀Ni—P及Ni—P—PTFE的应用研究

介绍了无电解镀镍的应用领域，研究了Ｎｉ－Ｐ镀层在各种应用环境下的耐蚀性能及在油田管路上的应用，并研究了Ｎｉ－Ｐ－ＰＴＦＥ镀层的性能开发及应用前景。     

Optical properties and structures of silver thin films deposited by magnetron sputtering with different thicknesses

A series of thin Ag films with different thicknesses grown under identical conditions are analyzed by means of spectrophotometer. From these measurements the values of refractive index and extinction coefficient are calculated. The films are deposited onto BK7 glass substrates by direct current (DC) magnetron sputtering. It is found that the optical properties of the Ag films can be affected by films thickness. Below critical thickness of 17 nm, which is the thickness at which Ag films form continuous films, the optical properties and constants vary significantly with thickness increasing and then tend to a stable value up to about 40 nm. At the same time, X-ray diffraction measurement is carried out to examine the microstructure evolution of Ag films as a function of films thickness. The relation between optical properties and microstructure is discussed.     

二极管伏安特性曲线测试电路的改进

指出了文献中所给出的伏安法测二级管特性曲线电路存在的问题，并给出了改进电路。     

移动运营商定制终端的研究

随着移动数据业务广泛开展，终端独立发展模式不再适用．运营商定制终端成为趋势。运营商定制终端面临的挑战有：没有能力控制终端销售渠道、难以解决终端应用平台的兼容性、内容应用开发商与终端厂商整合不足、杀手级业务不明确、研定实力不足等。介绍了国外运营商定制手机的做法以及国内运营商定制终端的尝试。     

卫星定位技术在车辆管理中的应用

介绍一种应用卫星定位技术设计的车辆管理设备——行车记录仪．包括该设备的主要功能、工作原理、软硬件设计及采用的关键技术．其中对设备中采用的定位野值剔除算法和数据压缩算法进行了较详细的介绍．     

制备软X光多层膜的转速控厚法

本文提出了一种新的监控软X光多层膜膜厚的方法——转速控厚法,利用这种方法镀制的设计周期厚度分别为8.4和10nm,周期数达50对和30对的W/C多层膜,经小角X光衍射测试,结果表明周期厚度随机误差在0.1nm左右。