Bistability of a "chevron" smectic C* liquid crystal in an external electric field

被引：2

作者：

Romanov, V. P. ^{[1
]}

Ul'yanov, S. V. ^{[1
,2
]}

Chernyak, K. G. ^{[1
]}

机构：

[1] St Petersburg State Univ, St Petersburg 198504, Russia

[2] St Petersburg Inst Trade & Econ, St Petersburg 194021, Russia

来源：

PHYSICS OF THE SOLID STATE | 2010年 / 52卷 / 09期

关键词：

LAYER STRUCTURE; MODEL;

D O I：

10.1134/S1063783410090337

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The system of nonlinear equations describing a surface-stabilized ferroelectric smectic C* liquid crystal in the chevron geometry has been investigated by numerical methods in the framework of the continuum model of liquid crystals. Stable orientational and structural configurations have been studied, and the results obtained have been compared with those derived using simplified models. The height of the potential barrier separating two stable configurations has been determined, and the transition between them under the action of the external electric field has been examined. It has been demonstrated that this effect has a threshold character. The dependence of the threshold field on the film thickness has been analyzed.

引用

页码：1985 / 1991

页数：7

共 10 条

[1]

Beldon SM, 2001, MOL CRYST LIQ CRYST, V365, P1685

[2]

Broyden C.G., 1970, IMA J APPL MATH, V6, P76, DOI [10.1093/imamat/6.1.76, DOI 10.1093/IMAMAT/6.1.76]

[3] SMECTIC-C CHEVRON, A PLANAR LIQUID-CRYSTAL DEFECT - IMPLICATIONS FOR THE SURFACE-STABILIZED FERROELECTRIC LIQUID-CRYSTAL GEOMETRY [J].

CLARK, NA ;

RIEKER, TP .

PHYSICAL REVIEW A, 1988, 37 (03) :1053-1056

[4] SUBMICROSECOND BISTABLE ELECTRO-OPTIC SWITCHING IN LIQUID-CRYSTALS [J].

CLARK, NA ;

LAGERWALL, ST .

APPLIED PHYSICS LETTERS, 1980, 36 (11) :899-901

[5]

de Gennes P. G., 1993, The Physics of Liquid Crystals, V2nd ed

[6] Effect of decoupled azimuthal and zenithal anchoring on smectic-C chevron structures [J].

Diaz, Alberto ;

Mckay, Geoff ;

Mottram, Nigel J. .

PHYSICAL REVIEW E, 2007, 76 (04)

[7]

LANDAU LD, 1999, COURSE THEORETICAL P, V7

[8] A MODEL OF CHEVRONS IN SMECTIC C-ASTERISK LIQUID-CRYSTALS - UNIFORM AND TWISTED SOLITON STATES [J].

LIMAT, L .

JOURNAL DE PHYSIQUE II, 1995, 5 (06) :803-822

[9] A SOLITON MODEL FOR THE CHEVRON LAYER STRUCTURE IN SMC-STAR LIQUID-CRYSTALS [J].

NAKAGAWA, M .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1989, 174 :65-73

[10] CHEVRON LOCAL LAYER STRUCTURE IN SURFACE-STABILIZED FERROELECTRIC SMECTIC-C CELLS [J].

RIEKER, TP ;

CLARK, NA ;

SMITH, GS ;

PARMAR, DS ;

SIROTA, EB ;

SAFINYA, CR .

PHYSICAL REVIEW LETTERS, 1987, 59 (23) :2658-2661

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