Abstract
The phase transition from partial to complete wetting and its relation to bulk and surface critical phenomena are examined for various categories of wetting problems. Landau theory calculations are combined with scaling arguments. Complete wetting near the bulk critical point (“critical-point wetting” as proposed by Cahn, and developed systematically by Nakanishi and Fisher) appears associated with the presence of spontaneous or imposed surface order at the bulk critical point, T c. Conversely, partial wetting near T c appears associated with a vanishing surface order parameter at T c. Thus, partial and complete wetting appear associated with distinct universality classes of surface critical phenomena.
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