利用临界角来传感部分有序液晶轮廓。

Utilizing critical angles in sensing partially ordered liquid crystal profile.

作者信息

Abu-Abed Alaeddin S, Lindquist Robert G

机构信息

University of Central Oklahoma, Edmond, OK 73034, USA.

出版信息

Opt Express. 2009 Dec 21;17(26):23729-35. doi: 10.1364/OE.17.023729.

DOI:10.1364/OE.17.023729

PMID:20052084

Abstract

This paper investigates a new approach for tracking nematic uniaxial liquid crystal (LC) profile in partially ordered LC based sensors. This approach utilizes measuring critical angles for total internal reflection (TIR) at the interface of optically isotropic and partially ordered LC film. The proposed optical transduction requires measuring of the ordinary critical angle and two extraordinary critical angles in orthogonal directions to report the LC degree of ordering and the director axis orientation.

摘要

本文研究了一种用于跟踪基于部分有序液晶（LC）的传感器中向列型单轴液晶（LC）轮廓的新方法。该方法利用测量光学各向同性与部分有序LC薄膜界面处全内反射（TIR）的临界角。所提出的光学传感需要测量寻常临界角和两个相互正交方向的非常临界角，以报告LC的有序度和指向矢轴方向。