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基于Landau-de Gennes理论,利用松弛迭代法,研究了混合排列向列相液晶薄盒中1/2向错引起的有序重构的扩散现象,给出了1/2向错的核结构、双轴性结构,以及盒厚减小时有序重构的扩散.当盒厚小于15ξ时,随着盒厚的减小,向错范围和有序重构区域沿基板方向迅速扩散;当盒厚减小到临界厚度10ξ时,有序重构的范围扩散到整个液晶盒中,以向错中心所对应的平面为界,指向矢一部分垂面排列,另一部分沿面排列.本文的研究对拓扑缺陷对向列相液晶中的亚微米胶体粒子的调节作用具有一定的理论指导意义.
Based on the Landau-de Gennes theory, relaxation of iteration method was used to study the diffusion of orderly reconstructions caused by half-wave direction errors in mixed-aligned nematic liquid crystal cells. Biaxial structure and orderly reconstructed diffusion when the cell thickness is decreased.When the cell thickness is less than 15ξ, the area of the error and the orderly reconstructed area rapidly diffuse along the substrate as the cell thickness decreases. When the cell thickness When the critical thickness is reduced to 10 ξ, the range of ordered reconstruction diffuses into the entire LC cell, with the plane corresponding to the center of the error as the boundary, one part of the director is arranged vertically and the other part is arranged along the surface.In this paper, The regulation of submicron colloidal particles in nematic liquid crystal has certain theoretical significance.