Dielectric anisotropy in liquid crystal mixtures with nematic and smectic phases  

作　　者：汤星舟 叶家耀 王子烨 姜皓译 尚小虎 杨朝雁 李炳祥 Xing-Zhou Tang;Jia-Yao Ye;Zi-Ye Wang;Hao-Yi Jiang;Xiao-Hu Shang;Zhao-Yan Yang;Bing-Xiang Li(Nanjing University of Posts and Telecommunications,College of Electronic and Optical Engineering&College of Flexible Electronics,Nanjing 210023,China;National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210023,China)

机构地区：[1]Nanjing University of Posts and Telecommunications,College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing 210023,China [2]National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210023,China

出　　处：《Chinese Physics B》2024年第8期519-524,共6页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China (Grant No.2022YFA1405000);the National Natural Science Foundation of China (Grant No.62375141);the Natural Science Foundation of Jiangsu Province,Major Project (Grant No.BK20212004);the Natural Science Research Start-up Foundation of Recruiting Talents of Nanjing University of Posts and Telecommunications (Grant Nos.NY222122 and NY222105)。

摘　　要：The modulation of dielectric anisotropy(△ε)is pivotal for elucidating molecular interactions and directing the alignment of liquid crystals.In this study,we combine liquid crystals with opposing dielectric anisotropies to explore the impact of varying concentrations on their properties.We report the sign-reversal of△εin both the nematic and smectic A phases of these mixed liquid crystals,alongside a dual-frequency behaviour across a broad temperature spectrum.Our research further quantifies the influence of mixture ratios under various temperatures and electric field frequencies.This exploration may pave the way for the discovery of new physical phenomena.

关 键 词：mixed liquid crystal dielectric anisotropy TUNABLE NEMATIC SMECTIC 

分 类 号：O469[理学—凝聚态物理]