Abstract
The rational function approximation method, density functional theory, and Monte Carlo simulation are used to obtain the density profiles of multicomponent hard-sphere mixtures near a planar hard wall. Binary mixtures with a size ratio 1:3 in which both components occupy a similar volume are specifically examined. The results indicate that the present version of density functional theory yields an excellent overall performance. A reasonably accurate behavior of the rational function approximation method is also observed, except in the vicinity of the first minimum, where it may even predict unphysical negative values.
- Received 13 February 2007
DOI:https://doi.org/10.1103/PhysRevE.75.061201
©2007 American Physical Society
