title: Classical density functional study of wetting transitions on nanopatterned surfaces.
abstract: Even simple fluids on simple substrates can exhibit very rich surface phase behaviour. To illustrate this, we consider fluid adsorption on a planar wall chemically patterned with a deep stripe of a different material. In this system, two phase transitions compete: unbending and pre-wetting. Using microscopic density-functional theory, we show that, for thin stripes, the lines of these two phase transitions may merge, leading to a new two-dimensional-like wetting transition occurring along the walls. The influence of intermolecular forces and interfacial fluctuations on this phase transition and at complete pre-wetting are considered in detail.
authors.affiliation: Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK.
authors.forename: P
authors.initials: P
authors.lastname: Yatsyshin
authors.forename: A O
authors.initials: AO
authors.lastname: Parry
authors.forename: C
authors.initials: C
authors.lastname: Rascón
authors.forename: S
authors.initials: S
authors.lastname: Kalliadasis