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Analysis of the conoscopic measurement for uniaxial liquid-crystal tilt angles

机译:锥光测量的单轴液晶倾斜角分析

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摘要

Conoscopy as an optical method for accurate measurement of crystal tilt angles from interference figures is analyzed for the special case of uniaxial crystals. The displacement of interference figures is related to the crystal tilt angle in an explicit, noniterative manner that is accurate to within ~2%. The analysis applies to uniaxial nematic liquid-crystal monodomains and homogeneous crystals when a symmetrical center of the conoscopic interference figure is visible. The equations developed are also used to derive other previously reported expressions that are approximations with a limited range of applicability.
机译:对于单轴晶体的特殊情况,分析了作为一种根据干涉图精确测量晶体倾角的光学方法的锥镜术。干涉图的位移与晶体倾斜角的关系明确且精确,且精确到〜2%。当锥度干涉图的对称中心可见时,该分析适用于单轴向列液晶单畴和均质晶体。所开发的方程式还用于导出其他先前报告的表达式,这些表达式是适用范围有限的近似值。

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