Landau-de Gennes modelling of nematic liquid crystal colloids

被引：252

作者：

Ravnik, Miha ^{[1
]}

Zumer, Slobodan ^{[1
,2
]}

机构：

[1] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia

[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia

来源：

LIQUID CRYSTALS | 2009年 / 36卷 / 10-11期

关键词：

Landau-de Gennes free energy; colloids; liquid crystal; modelling; structures; TOPOLOGICAL DEFECTS; CYLINDRICAL CAVITIES; FINE-STRUCTURE; SIMULATION; PHASE; EMULSIONS; SYSTEMS; PHYSICS; MEDIA; ORDER;

D O I：

10.1080/02678290903056095

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Phenomenological Landau-de Gennes modelling based on the free energy of nematic liquid crystal colloids is reviewed. Nematic phase, gradient of order, and surface anchoring contributions to the total free energy are used. The numerical finite difference relaxation technique is explained as an efficient tool for the minimisation of the free energy. Effects of the mesh and mesh allocation are discussed. Various conceptually different colloidal structures are calculated to show the universality of the model. Single particles, dipolar-quadrupolar dimers, entangled dimers, dimers bound by escaped hyperbolic rings, and hierarchically patterned Saturn-ring colloidal superstructures are presented.

引用

页码：1201 / 1214

页数：14

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