Structure factor of hard spheres near a wall

Within a certain version of weighted density functional theory we have determined the direct correlation function of a hard sphere fluid close to a hard wall and, based on the Ornstein-Zernicke equation, its inverse yielding the structure factor. We compare these results as well as the corresponding density profiles with those obtained from the inhomogeneous Percus-Yevick theory and from published simulation data. We find a good quantitative agreement at low and medium densities which also persists, apart from some amplitudes, at higher densities. In addition we have computed the excess coverage and the surface tension.