激光和CCD快速自动测量车身曲面的研究

根据光学三角测量原理提出一种应用激光和CCD光电子技术非接触车身曲面快速自动跟踪曲面轨迹的等距离随动测量方法。并对实际轿车模型作了实验测量。     

链烷烃的表面张力与内压

对Ｄａｖｉｓ和Ｒｏｓｓｅｉｎｓｋｙ提出的关系检验表明，液体的表面张力σ与Ｐ１Ｖｍ１／３之比不仅取决于温度，还与液体的种类有关，据此，建立了一个能由链烷烃的分子结构准确预测其表面张力的方法。     

聚合物复合材料填充剂的改性

在前人研究的基础之上，归纳总结了聚合物复合材料填充剂的种类，综述了对其进行表面改性的目的、条件、方法、工艺以及对改性结果的表征等。文章还分析了影响填充聚合物复合材料性能的因素，指出了今后发展的方向。     

薄Si膜对基底表面粗糙度的影响

利用ＺＹＧＯ光学干涉测量仪，散射积分测量法观测了光学元件表面均方根粗糙度．详细分析了薄Ｓｉ膜对基底均方根粗糙度的影响，由此认为薄膜并不总是复制基底表面的粗糙度，结果出现了薄膜降低表面粗糙度的现象．提出了一定厚度范围的薄Ｓｉ膜的表面粗糙度存在着一个稳定值的新设想．     

Edge detection,three-dimensional cell boundary reconstruction and volume and surface area estimation from differential interference contrast images

Three-dimensional (3-D) cell morphology is important for the understanding of cell function and can by quantified in terms of volume and surface area. Differential interference contrast (DIC, or Nomarski) imaging can enable cell edges to be clearly visualized in unstained tissue due to the slight difference in refractive index between aqueous media and cytoplasm. DIC is affected in only one direction - the direction of the optical shear. A 1-D edge detector was used in that direction with a scale length equal to that of an in-focus edge to highlight cell boundaries. By comparison with the signal from the edge detector on an out-of-focus slice, the in-focus slices could be segmented and, after noise suppression, cell outlines obtained. A voxel paradigm was used to calculate cell volume and differential geometry was used for surface area estimation. We applied this approach to obtain 3-D dimensional information by optical sectioning of motile Amoeba proteus.     

Progress in deep-UV photoresists

Higher resolution can be achieved in lithography by decreasing the wavelength of the exposure source. However, resist material and their processing are also important when we move to a shorter wavelength lithography technology. This paper reviews the recent development and challenges of deep-UV photoresists and their processing technology.     

Effects of Surface Morphology and Composition Modification on Spectral Emissivity and Thermal Diffusivity Profile at High Temperatures

A new all-spectroscopic method for depth-resolved thermal diffusivity measurement of metallic specimens has been demonstrated. The method entails measurement of the mass entrained into a laser-produced plasma (LPP) plume in such a manner that the plume is representative of the specimen in elemental composition. Both the abundance of matter and its elemental composition are measured by time-resolved spectroscopy for each LPP plume. In order to delineate the morphology versus composition basis of the depth dependence, a new study on a Nichrome ribbon specimen heated by ohmic heating in a vacuum is presented. A set of depth-resolved thermal diffusivity measurements is carried out, while noting the attendant changes in the spectral emissivity and elemental composition at succeeding ablation layers. Additional measurements are carried out after the specimen has been treated under varying heating conditions. Preferential diffusion of chromium at high temperatures has been found to contribute to the dynamics of surface thermophysical properties at high temperatures. Representative LPP ablation is well suited for removal of surface impurities prior to thermophysical property measurements by the pulse heating technique.     

大曲率表面物体形貌的光学检测方法研究

本文提出了两种用于曲面形貌检测的傅里叶变换法中的频域低通滤波器，并与常用的窗口法低通滤波器进行了比较，给出了实际测量的结果。这两种频域低通滤波器（高幂次指数滤波器和矩形余弦滤波器）有可方便调整且平直的通带，平直无旁瓣的阻带，较陡的边带将通带与阻带间圆滑过渡连接，从而可尽可能多地保留有用频率成分，很好地滤掉直流和不用的高频分量，且较好地抑制振铃现象，克服一般窗口法设计的低通滤波器中旁瓣的影响。具有使用简单、参数调整方便、应用范围广等特点，尤其是对具有大梯度表面和棱角细节的物体检测更有独到之处，具有广泛的应用前景。     

三维有自由表面问题的数值模拟研究

本文采用求解三维弱可压流动模型及带浮力修正的Ｋ－ε两方程湍流模型的方法，用有限差分法数值求解，研究了有密度差的污染物在复杂流场中的对流扩散规律。文中给出一种简单而有效的处理自由面边界的方法，并详细地给出一个三维弱可压的流体动力学计算方法，数值计算表明本文的方法能较好地给出自由面的变化规律、流场的非定常过程及预测了污染物的对流扩散规律。     

从长贮试验看引信零件表面处理方式选择

总结了历年长贮试验情况，分析了防腐层变化的原因，指出了引信零件在选择表面处理方式时应注意的问题。