PMID: 11909073Mar 23, 2002Paper

Is a position-dependent stiffness relevant for the wetting phase diagram?

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
F Clarysse, C J Boulter

Abstract

In this paper we determine the wetting phase diagram for three-dimensional systems with short-range forces assuming the presence of a position-dependent stiffness contribution as recently proposed [M.E. Fisher and A.J. Jin, Phys. Rev. Lett. 69, 792 (1992)]. We predict a discontinuous transformation of the phase diagram immediately upon moving beyond the mean-field approximation. However, in contrast to Fisher and Jin we find that a renormalization group calculation yields fluctuation-induced second-order transitions rather than fluctuation-induced first-order ones. As a consequence, in all fluctuation regimes we recover the same qualitative phase diagram as predicted in the absence of a position-dependent stiffness coefficient. Furthermore, recent predictions for tricritical wetting behavior remain unaffected by the stiffness contribution.

References

Jul 1, 1985·Physical Review. B, Condensed Matter·D S Fisher, D A Huse
Oct 1, 1985·Physical Review. B, Condensed Matter·E H Hauge, K Olaussen
Feb 1, 1988·Physical Review. B, Condensed Matter·K Binder, D P Landau
Mar 1, 1988·Physical Review. B, Condensed Matter·G Gompper, D M Kroll
Mar 15, 1993·Physical Review. B, Condensed Matter·A J Jin, M E Fisher
Jul 15, 1993·Physical Review. B, Condensed Matter·A J Jin, M E Fisher
Aug 3, 1992·Physical Review Letters·M E Fisher, A J Jin

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