SADDLE-SPLAY ELASTICITY OF NEMATIC STRUCTURES CONFINED TO A CYLINDRICAL CAPILLARY

被引：62

作者：

KRALJ, S ^{[1
]}

ZUMER, S ^{[1
]}

机构：

[1] UNIV LJUBLJANA, DEPT PHYS, LJUBLJANA 61000, SLOVENIA

来源：

PHYSICAL REVIEW E | 1995年 / 51卷 / 01期

关键词：

D O I：

10.1103/PhysRevE.51.366

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The stability of nematic structures within a cylindrical capillary whose wall exhibits a homeotropic boundary condition is studied. The structures are obtained numerically from Euler-Lagrange equations resulting from the minimization of the Frank free energy functional. Stability diagrams are presented showing dependence on elastic properties, surface anchoring, and external transversal field strength. Emphasis is given to the effects of the saddle-splay elastic constant (K24), which plays an important role in the weak anchoring regime. A new structure-the planar polar structure with two line defects-is predicted. It is shown that it is stable in a finite interval of the external field strength in the strong anchoring regime. © 1995 The American Physical Society.

引用

页码：366 / 379

页数：14

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