Thermal sensing optical rotatory characteristics of short pitch cholesteric liquid crystal

LI Jun; HUANG Zi-qiang

doi:10.3788/YJYXS20153001.0010

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Thermal sensing optical rotatory characteristics of short pitch cholesteric liquid crystal

Material Physics & Chemistry | 更新时间：2020-08-12

- Thermal sensing optical rotatory characteristics of short pitch cholesteric liquid crystal
- Chinese Journal of Liquid Crystals and Displays Vol. 30, Issue 1, Pages: 10-15(2015)
- 作者机构：
  
  电子科技大学电子科学技术研究院,四川成都,610054
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20153001.0010
  CLC： O438.1
- Received：26 June 2014，
  
  Revised：11 July 2014，
  
  Published：05 February 2015
- 稿件说明：
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李君, 黄子强. 短螺距手性液晶热敏旋光特性的研究[J]. 液晶与显示, 2015,30(1): 10-15

LI Jun, HUANG Zi-qiang. Thermal sensing optical rotatory characteristics of short pitch cholesteric liquid crystal[J]. , 2015,30(1): 10-15
李君, 黄子强. 短螺距手性液晶热敏旋光特性的研究[J]. 液晶与显示, 2015,30(1): 10-15 DOI： 10.3788/YJYXS20153001.0010.

LI Jun, HUANG Zi-qiang. Thermal sensing optical rotatory characteristics of short pitch cholesteric liquid crystal[J]. , 2015,30(1): 10-15 DOI： 10.3788/YJYXS20153001.0010.

摘要

利用Berreman 44矩阵建立理论模型对短螺距手性液晶的旋光率进行求解

使用MATLAB计算得到了手性液晶旋光角随入射角、螺距、盒厚等外界因素变化规律的仿真结果

且通过实验验证了此方法的准确性.对手性液晶旋光效应作为热敏材料的使用进行了实验探究

使用旋光仪测量螺距为250~310 nm的手性液晶旋光角

得到手性液晶的热敏旋光特性.结果显示

螺距不同时

液晶的旋光角随温度具有不同程度的变化

但每种螺距下

手性液晶旋光率随温度的变化明显且规律.验证了旋光率热敏效应的稳定性

结果证明将手性液晶作为一种潜在的热敏材料应用的可行性

为手性液晶在温度传感器中的应用提供了实验依据.

Abstract

On the basis of Berreman 44 matrix

the theoretical model of optical rotatory rate of short pitch CLC(Cholesteric Liquid Crystal) was established and calculated. Variations of the optical rotation angle with external factors like incident angle

pitch and the thickness of LC cell were simulated by MATLAB and also verified by experiments. Experimental research on temperature sensor of CLC optical rotatory was studied as well. The optical rotatory angle curves with temperature of CLC from pitch 250 nm to 310 nm in different conditions were measured by polarimeter to get the thermal sensing rotatory characteristics of CLC. Results illustrated that CLC optical rotatory angle varies obviously and regularly with temperature in different conditions even though there's differences on different pitch. The stability of its thermal sensing effect was verified by experiments too. The results proved that CLC can be used as a potential thermal sensing materiels. The study provided experimental basis for CLC's use on temperature sensor.

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references

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