Surface Alignment and Anchoring Transitions in Nematic Lyotropic Chromonic Liquid Crystal

被引：65

作者：

Nazarenko, V. G. ^{[1
]}

Boiko, O. P. ^{[1
,2
,3
]}

Park, H. -S. ^{[2
,3
]}

Brodyn, O. M. ^{[1
]}

Omelchenko, M. M. ^{[2
,3
]}

Tortora, L. ^{[2
,3
]}

Nastishin, Yu. A. ^{[2
,3
]}

Lavrentovich, O. D. ^{[2
,3
]}

机构：

[1] Inst Phys, UA-03039 Kiev 39, Ukraine

[2] Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA

[3] Kent State Univ, Chem Phys Interdisciplinary Program, Kent, OH 44242 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 01期

基金：

美国国家科学基金会;

关键词：

WALL INTERFACE; DIRECTOR; FILM;

D O I：

10.1103/PhysRevLett.105.017801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The surface alignment of lyotropic chromonic liquid crystals can not only be planar (tangential) but also homeotropic, with self-assembled aggregates perpendicular to the substrate, as demonstrated by mapping optical retardation and by three-dimensional imaging of the director field. With time, the homeotropic nematic undergoes a transition into a tangential state. The anchoring transition is discontinuous and can be described by a double-well anchoring potential with two minima corresponding to tangential and homeotropic orientation.

引用

页数：4

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