Title

Ring patterns in liquid crystals aligned by phase-separated two-component monolayers

Authors

Authors

T. Bera; W. L. Liang;J. Y. Fang

Comments

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Abbreviated Journal Title

Colloid Surf. A-Physicochem. Eng. Asp.

Keywords

Phase-separated organosilane monolayers; Liquid crystal alignments; SELF-ASSEMBLED MONOLAYERS; ORGANOSILANE MONOLAYERS; FLUORESCENCE; MICROSCOPY; MIXED MONOLAYERS; FORCE MICROSCOPY; ATOMIC-FORCE; ALIGNMENT; SURFACES; ADSORPTION; PLANAR; Chemistry, Physical

Abstract

We investigate the alignment of 4 '-pentyl-4-cynobiphenyl (5CB) liquid crystal on phase-separated two-component organosilane monolayers that consist of the protruding islands surrounded by a continuous phase. The molecular disordering at the protruding island edge locally perturbs the homeotropic alignment of the 5CB induced the phase-separated monolayers, leading to the formation of ring patterns. The edge effect on the 5CB alignment decreases with the decrease of the height difference between the protruding islands and the surrounding monolayer and increases with the decrease of the size of the protruding islands. (C) 2011 Elsevier B.V. All rights reserved.

Journal Title

Colloids and Surfaces a-Physicochemical and Engineering Aspects

Volume

395

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

32

Last Page

37

WOS Identifier

WOS:000300206400005

ISSN

0927-7757

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