PMID: 11308663Apr 20, 2001Paper

Landau-de Gennes theory of surface-enhanced ordering in smectic films

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
A N Shalaginov, D E Sullivan

Abstract

A Landau theory for surface-enhanced ordering in smectic-A free-standing films is described, based on a generalization of de Gennes' model for a "presmectic" fluid confined between two walls. According to the theory, smectic ordering in free-standing films heated above the bulk smectic melting temperature is due to an intrinsic surface contribution rather than an external field. The theory yields a persistent finite-size effect, in that the film melting temperatures do not tend to the bulk transition temperature in the limit of infinite film thickness. It also predicts that a continuous transition from (N+1)- to N-layer films is impossible without an external field. The theory closely fits existing experimental data on layer-thinning transitions in compounds which exhibit a bulk smectic-A to nematic phase transition. Possible origins of the intrinsic surface contribution are discussed.

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Apr 24, 2002·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·S PankratzC C Huang

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Citations

Dec 17, 2011·Advanced Materials·Gabin GbabodeYves H Geerts
Oct 26, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·P V DolganovH T Nguyen
Oct 13, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Leonid V Mirantsev, Epifanio G Virga
Mar 7, 2015·The European Physical Journal. E, Soft Matter·Elena S PikinaWim H de Jeu
Apr 20, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Haiko SteuerMartin Schoen
Mar 20, 2008·Soft Matter·Christian Bohley, Ralf Stannarius
Aug 25, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·D E Sullivan, A N Shalaginov
Mar 15, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·R Jaquet, F Schneider
Mar 23, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A N Shalaginov, D E Sullivan

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