Wetting on Lines and Lattices of Cylinders

TL;DR

This paper investigates wetting and capillary condensation phenomena on cylinders arranged in lines and lattices, analyzing how transitions depend on geometric and physical parameters using an interface potential approach.

Contribution

It introduces a formalism to analyze wetting and condensation transitions on cylindrical structures, highlighting the effects of geometry and interaction strength.

Findings

Capillary condensation occurs on lines of cylinders at close separations.

Complete wetting emerges after condensation if cylinders are sufficiently close.

Transitions vanish as cylinder separation increases.

Abstract

This paper discusses wetting and capillary condensation transitions on a line and a rectangular array of cylinders using an interface potential formalism. For a line of cylinders, there is a capillary condensation transition followed by complete wetting if the cylinders are sufficiently close together. Both transitions disappear as the cylinder separation is increased. The dependence of the wetting phase diagram of a rectangular array of cylinders is discussed as a function of the chemical potential, substrate--fluid interaction strength and surface tension.