球形界面对向列相液晶系统中+1 boojum缺陷结构转变的影响
The Effect of Spherical Interface on the Structural Transition of +1 Boojum within the Nematic System
DOI: 10.12677/MS.2018.88105, PDF,  被引量    国家自然科学基金支持
作者: 刘雅静, 于辉敏, 周 璇, 张志东：河北工业大学，理学院，天津；陈思博：河北工业大学，电子信息工程学院，天津
关键词: Landau-de Gennes理论；+1 boojum缺陷；锚定条件；球形界面；Landau-de Gennes Theory； +1 Boojum Defect； Anchoring Conditions； Spherical Interface
摘要: 基于Landau-de Gennes理论，利用二维有限差分迭代法，研究含有+1 bojum缺陷的纳米尺度圆柱内切球向列相液晶系统。讨论当球形界面分别为强、弱两种锚定条件时，+1 boojum缺陷的结构转变。通过与圆柱液晶系统中+1 boojum缺陷的结构转变过程进行比较，探究球形界面对+1 boojum缺陷结构转变的影响。结果表明，球形界面使得+1 boojum缺陷结构变小，且不会出现有序重构现象；该结论与球形界面的强、弱锚定条件无关。
Abstract: Based on the Landau-de Gennes theory, using a two-dimensional finite-difference iterative method, a cylinder-inscribed-sphere (CIS) nematic liquid crystal (NLC) system with +1 boojum under nanoscale was established. The structural transition of +1 boojum defect induced by the anchoring conditions on the spherical interface was firstly studied. Then, by comparing with the structural transition process of +1 boojum defect in the cylindrical liquid crystal cell, we studied the effect of spherical surface on the structural transition of +1 boojum defect. Results show that, the structure of +1 boojum will shrink and system will not reach the order reconstruction (OR) state. This phe-nomenon is mainly due to the geometry of spherical interface. Furthermore, the result is irrelevant to the anchoring conditions (weak or strong) on the boundary.
文章引用：刘雅静, 于辉敏, 陈思博, 周璇, 张志东. 球形界面对向列相液晶系统中+1 boojum缺陷结构转变的影响[J]. 材料科学, 2018, 8(8): 890-903. https://doi.org/10.12677/MS.2018.88105

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