首页> 外文期刊>Proceedings of the IEE - Part B: Electronic and Communication Engineering >A gauge for the precision measurement of the thickness of germanium and silicon wafers
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A gauge for the precision measurement of the thickness of germanium and silicon wafers

机译:精确测量锗和硅晶片厚度的量规

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摘要

Some of the difficulties associated with the precision measurement of the thickness of thin germanium and silicon wafers, together with several possible methods of measurement, are briefly discussed. A gauge which employs the optical-lever principle is described in which frictional restraint of the moving parts is reduced to that of a knife edge alone, thus ensuring good repeatability of reading with probe pressures of less than 3g. The gauge covers the range 0¿270 microns with an overall accuracy of ±0.5 micron.
机译:简要讨论了与精确测量锗和硅薄片厚度有关的一些困难,以及几种可能的测量方法。描述了一种采用光学杠杆原理的压力计,其中,运动部件的摩擦约束减小到仅刀刃的摩擦约束,从而确保了在小于3g的探针压力下具有良好的读取重复性。该量规覆盖范围0×270微米,整体精度为±0.5微米。

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