Wetting in a confined geometry: A Monte Carlo study

Binary liquid mixtures are expected to display two interfacial transitions when confined in small pores. One is a wetting transition, similar to such transitions on planar substrates. The other is an interfacial shape transition. We use Monte Carlo simulations to show that an Ising system displays both transitions. We find a wetting phase diagram similar to that of a model with a long-ranged wetting potential, proving that the existence of both transitions is insensitive to the wetting potential shape. © 1991 The American Physical Society.