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Author Idziak, S. H. ♦ Koltover, I. ♦ Israelachvili, J. N. ♦ Safinya, C. R.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ PHYSICS ♦ LIQUID CRYSTALS ♦ X-RAY DIFFRACTION ♦ DOMAIN STRUCTURE ♦ CRYSTAL STRUCTURE ♦ CONFINEMENT ♦ FILMS ♦ ALIGNMENT ♦ ELASTICITY ♦ SURFACE PROPERTIES ♦ DEFORMATION ♦ XRD
Abstract We report on studies using the x-ray surface forces apparatus (XSFA) to compare the structure of a liquid crystal confined between hard surfaces and, for the first time, between soft surfaces that can deform due to the stresses imposed by the confined fluid. We find that the alignment of smectic domains in confined films depends critically on both the shape and compliance of the confining walls or surfaces: {open_quote}{open_quote}Soft surfaces{close_quote}{close_quote} exhibit a critical gap thickness of 3.4 {mu}m for the liquid crystal studied at which maximum alignment occurs, while {open_quote}{open_quote}hard surfaces{close_quote}{close_quote} do not exhibit gap-dependent alignment. {copyright} {ital 1996 The American Physical Society.}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-02-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 76
Issue Number 9


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