Title: Gravity, confinement, and phase equilibria
Authors: Indekeu, Joseph ×
Rogiers, Joseph #
Issue Date: Mar-1994
Publisher: R S C Publications
Series Title: Berichte der Bunsen-Gesellschaft für Physikalische Chemie vol:98 issue:3 pages:392-394
Abstract: We study a fluid or Ising lattice gas confined between two horizontal walls with separation L, in a gravitational field of strength g. For identical walls (with equal surface fields h1 = h(L)) the familiar capillary condensation and capillary criticality extend to non-zero g. Finite-size scaling predicts that the locus of criticality shrinks to g = 0 for L --> infinity, in the manner g is-proportional-to L(-(betadelta/nu+1). For opposing walls (with h1 = -h(L)) we confirm that bulk two-phase coexistence is suppressed, for g = 0, to below the wetting temperature T(w). However, for small g (and h1 of appropriate sign) bulk two-phase coexistence extends to higher temperatures that increase extremely rapidly with g, up to a maximum temperature that is shifted from the L = infinity bulk critical point in the manner T(c, max)(L)-T(c)(infinity) is-proportional-to L-1/nu, conform with finite-size scaling.
ISSN: 0005-9021
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Theoretical Physics Section
× corresponding author
# (joint) last author

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