Abstract

We describe the modifications undergone by phase transitionsassociated with a planar surface when the system is confined bythe presence of a second surface parallel to the first. Theinhomogeneous states are studied within the Landau densityfunctional theory, which imparts scaling properties to the orderparameter profiles. We distinguish between two situations,identical and symmetrically opposed surface fields, and providethree illustrations: (i) a liquid crystal at thenematic-isotropic transition, (ii) a racemic mixture ofenantiomeric species and (iii) a ternary molecular fluidmixture close to a consolute point.

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