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25 天
扫描电镜(SEM)利用电子束对样品进行纳米级分辨率的图像分析
(a)电子束导向板和(b)静电透镜 电子透镜的工作原理基于电子在电场或磁场中的偏转。以下是几种常见的电子透镜类型及其工作原理的简要概述: 1. 静电透镜:由金属板构成,这些金属板连接到高电压电源。电子在通过这些板时会受到电场的影响而发生偏转 ...
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