Azimuthal anchoring of a nematic liquid crystal on a grooved interface with anisotropic polar anchoring  

作　　者：周璇 张志东 叶文江 宣丽 

机构地区：[1]State Key Laboratory of Applied Optics,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences [2]Graduate School of the Chinese Academy of Sciences [3]Department of Physics,Hebei University of Technology

出　　处：《Chinese Physics B》2012年第6期378-384,共7页中国物理B（英文版）

基　　金：Project supported by the Natural Science Foundation of Hebei Province,China (Grant No. A2010000004);the National Natural Science Foundation of China (Grant No. 60736042);the Key Subject Construction Project of Hebei Provincial University,China

摘　　要：Zhang Y J et al.[Zhang Y J,Zhang Z D,Zhu L Z and Xuan L 2011 Liquid Cryst.38 355] investigated the effects of finite polar anchoring on the azimuthal anchoring energy at a grooved interface,in which polar anchoring was isotropic in the local tangent plane of the surface.In this paper,we investigate the effects of both isotropic and anisotropic polar anchoring on the surface anchoring energy in the frame of Fukuda et al.’s theory.The results show that anisotropic polar anchoring strengthens the azimuthal anchoring of grooved surfaces.In the one-elastic-constant approximation（K11 = K22 = K33 = K）,the surface-groove-induced azimuthal anchoring energy is entirely consistent with the result of Faetti,and it reduces to the original result of Berreman with an increase in polar anchoring.Moreover,the contribution of the surface-like elastic term to the Rapini-Papoular anchoring energy is zero.Zhang Y J et al.[Zhang Y J,Zhang Z D,Zhu L Z and Xuan L 2011 Liquid Cryst.38 355] investigated the effects of finite polar anchoring on the azimuthal anchoring energy at a grooved interface,in which polar anchoring was isotropic in the local tangent plane of the surface.In this paper,we investigate the effects of both isotropic and anisotropic polar anchoring on the surface anchoring energy in the frame of Fukuda et al.’s theory.The results show that anisotropic polar anchoring strengthens the azimuthal anchoring of grooved surfaces.In the one-elastic-constant approximation（K11 = K22 = K33 = K）,the surface-groove-induced azimuthal anchoring energy is entirely consistent with the result of Faetti,and it reduces to the original result of Berreman with an increase in polar anchoring.Moreover,the contribution of the surface-like elastic term to the Rapini-Papoular anchoring energy is zero.

关 键 词：azimuthal anchoring energy surface grooves anchoring isotropy anchoring anisotropy 

分 类 号：O753.2[理学—晶体学] TN247[电子电信—物理电子学]