Defect Core Structures in Twisted Nematic and Twisted Chiral Liquid Crystals

作     者：Xuan Zhou Guili Zheng Zhidong Zhang 

作者机构：Department of Physics Hebei University of Technology Tianjin China 

出 版 物：《Journal of Modern Physics》 (现代物理（英文）)

年 卷 期：2013年第4卷第2期

页      面：272-279页

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

主　　题：Disclinations Eigenvalue Exchange Defect Core Landau-de Gennes Theory 

摘      要：The defect structures of s = ±1/2 twist disclinations in twisted nematic and twisted chiral liquid crystals have been investigated within the Landau-de Gennes theory numerically. Our results show that there exists eigenvalue exchange across the defect core of both the two models. The defect core is essentially biaxial and never isotropic. The defect centre is uniaxial and is surrounded by a strong biaxial region.