Structure of a nanodrop of a binary mixture on a solid surface

Abstract

The structure of a nanodrop composed of the binary mixture and sitting on the smooth solid surface is examined on the basis of a nonlocal canonical ensemble density functional theory. The molecules of two components have different diameters, masses and energy parameters of Lennard–Jones interaction potential. The properties of density distributions of the fluid components and local composition of the mixture inside and on the boundary of the drop are analysed in details for various net compositions of the mixture at various temperatures, parameters of intermolecular interaction and gravitational acceleration. The results might be of interest in developing drug delivery methods as one component of the mixture can be considered as a solvent and another one (solute) as a drug.