Publication Title

Physical Review E

Publication Date

2-27-2001

Document Type

Article

DOI

10.1103/PhysRevE.63.030501

Keywords

cholesteric liquid-crystals, magnetic stripe domains, diblock copolymers, instabilities, patterns, evolution, disorder, fields

Disciplines

Physics

Abstract

We visualize undulations in layered systems using a cholesteric stripe phase with a macroscopic supramicron periodicity. The wave vector of stripe pattern is in the cell's plane. The-undulation is induced by an in-plane magnetic field normal to the stripes. The observed displacement of layers is much larger than the value predicted by the Helfrich-Hurault classic theory. We propose a model of undulations that explains the data by finite surface anchoring of layers.

Comments

Copyright 2001 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevE.63.030501


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