弯曲芯型向列相液晶中的挠曲电畴

袁瑞; 封贺; 邢红玉; 叶文江; 项颖; 井红珍; 徐鸣亚

doi:10.3788/YJYXS20163109.0870

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弯曲芯型向列相液晶中的挠曲电畴

材料与器件 | 更新时间：2020-07-07

- 弯曲芯型向列相液晶中的挠曲电畴
- Flexodomain in BCN liquid crystal
- 液晶与显示 2016年31卷第9期页码：870-876
- 作者机构：
  
  1. 河北工业大学理学院, 天津 300401
  2. 广东工业大学信息工程学院, 广东广州 510006
- 作者简介：
  
  [ "袁瑞(1992-),男,江苏连云港人,硕士研究生,主要从事液晶与液晶器件物理方面的研究。E-mail:rui_yuanedu@163.com " ]
  叶文江(1976-),男,河北石家庄人,博士,副教授,主要从事液晶与液晶器件物理方面的研究。E-mail:wenjiang_ye@hebut.edu.cn
- 基金信息：
  
  国家自然科学基金(No.11274088,No.11374087,No.11304074);河北省自然科学基金(No.A2014202123);广东省科技计划项目(No.2014A050503064,No.2016A050502055);河北省教育厅项目(No.QN2014130);河北省高校重点学科资助课题;National Natural Science Foundation of China(No. 11274088,No.11374087,No.11304074);Natural Science Foundation of Hebei Province(No. A2014202123);Science and Technology Plan Project of Guangdong Province(No. 2014A050503064,No.2016A050502055);Research Project of Hebei Education Department(No. QN2014130);Key Subject Construction Project of Hebei Province University
- DOI：10.3788/YJYXS20163109.0870
  中图分类号： O436.1
- 收稿日期：2016-06-28，
  
  录用日期：2016-7-15，
  
  纸质出版日期：2016-09
- 稿件说明：
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袁瑞, 封贺, 邢红玉, 等. 弯曲芯型向列相液晶中的挠曲电畴[J]. 液晶与显示, 2016,31(9):870-876.

Rui YUAN, He FENG, Hong-yu XING, et al. Flexodomain in BCN liquid crystal[J]. Chinese journal of liquid crystals and displays, 2016, 31(9): 870-876.
袁瑞, 封贺, 邢红玉, 等. 弯曲芯型向列相液晶中的挠曲电畴[J]. 液晶与显示, 2016,31(9):870-876. DOI： 10.3788/YJYXS20163109.0870.

Rui YUAN, He FENG, Hong-yu XING, et al. Flexodomain in BCN liquid crystal[J]. Chinese journal of liquid crystals and displays, 2016, 31(9): 870-876. DOI： 10.3788/YJYXS20163109.0870.

摘要

弯曲芯型向列相（BCN）液晶在一定的低频电压和温度下会产生挠曲电畴，出现明暗相间的周期结构。本文使用偏光显微镜（BX-51）和电荷耦合元件（CCD）探测了BCN中挠曲电畴的周期大小变化与电压及温度的关系，并使用光学衍射技术对该周期结构进行了验证。实验结果表明：温度达到95℃，并且外加电压达到25 V时，BCN液晶的挠曲电畴条纹结构首次出现。在温度一定的条件下，畴的周期随外加电压的增大而逐渐减小；而电压一定的条件下，周期结构的对比度随温度的升高逐渐变得模糊，必须增大外加电压才能使模糊的周期结构重新变得清晰。本研究对探索BCN液晶在液晶光栅领域的应用与发展具有一定的指导意义。

Abstract

Bent-core nematic (BCN) liquid crystal under a certain low frequency voltage and temperature will produce flexodomain

a spatially periodic array of bright and dark stripes. Through polarizing microscope (BX-51) and charge coupled device (CCD)

the change of periodic flexodomain under different applied voltages and temperatures were explored. The periodic structure was verified by using the optical diffraction technology

too. The results show that flexodomain first appears when the applied voltage is 25 V and the temperature is 95℃

and the period of flexodomain decreases with the increase of applied voltage as the temperature is a certain value. In addition

when the voltage is a certain value

the contrast of periodic structure will become blurry with the increase of temperature and the blurry stripes become clear again only when the applied voltage increased. This research has a certain guiding significance on the application and development of BCN liquid crystal in liquid crystal grating.

关键词

Keywords

references

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