液晶与显示2016，Vol.31Issue(9)：870-876,7.DOI:10.3788/YJYXS20163109.0870
弯曲芯型向列相液晶中的挠曲电畴
Flexodomain in BCN liquid crystal
摘要
Abstract
Bent-core nematic (BCN)liquid crystal under a certain low frequency voltage and tempera-ture 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 dif-ferent 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 cer-tain 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 cer-tain guiding significance on the application and development of BCN liquid crystal in liquid crystal grating.关键词
BCN液晶/挠曲电畴/阈值电压/液晶光栅Key words
BCN liquid crystal/flexodomain/threshold voltage/liquid crystal grating分类
数理科学引用本文复制引用
袁瑞,封贺,邢红玉,叶文江,项颖,井红珍,徐鸣亚..弯曲芯型向列相液晶中的挠曲电畴[J].液晶与显示,2016,31(9):870-876,7.基金项目
国家自然科学基金(No．11274088,No．11374087,No．11304074) （No．11274088,No．11374087,No．11304074）
河北省自然科学基金(No． A2014202123) （No． A2014202123）
广东省科技计划项目(No．2014A050503064,No．2016A050502055) （No．2014A050503064,No．2016A050502055）
河北省教育厅项目(No．QN2014130) （No．QN2014130）
河北省高校重点学科资助课题Supported by National Natural Science Foundation of China (No．11274088,No．11374087,No．11304074) （No．11274088,No．11374087,No．11304074）
Natural Science Foundation of Hebei Province (No．A2014202123) （No．A2014202123）
Science and Technology Plan Project of Guangdong Province (No．2014A050503064,No．2016A050502055) （No．2014A050503064,No．2016A050502055）
Re-search Project of Hebei Education Department (No．QN2014130) （No．QN2014130）
Key Subject Construction Project of Hebei Province University． （）
