【摘要】 微分干涉相衬(DIC)显微术使用诺马斯基棱镜完成光束的分割、合成,合成光束发生干涉,将样品上各部分折射率、厚度的变化率或表面起伏的不同转化为像面上光强的差别,故像面是物面的微分。DIC与无限远光学系统的结合,减小了棱镜、检偏器的插入引起的负面影响。将该DIC应用于PM2.5大气颗粒物的研究,得到了优于其它显微术的图像。更多还原

【Abstract】 Nomarski prism is applied to beam segmentation and synthesis in Differential Interference Contrast (DIC) microscopy. The interference produced by synthetic beams converts refractive index, change rate of thickness or different surface fluctuations on various parts into the differences of light intensity on image plane, thus the image plane is the differential of object surface. The combination of DIC with infinite optical system reduces the adverse effect caused by insertion of prism and analyzer. Applying DIC to research of PM2.5 atmospheric particles, an image better than one from other microscopy is obtained.更多还原