STRUCTURE OF A COLLOIDAL SUSPENSION CONFINED IN A PLANAR SLIT

In this paper we present a simple theoretical scheme to calculate the inhomogeneous structure of an aqueous monodisperse suspension of highly charged spherical particles confined between two parallel charged walls. The theoretical model is based on the Derjaguin-Landau-Verwey-Overbeek level of description for the particle-particle and wall-particle interactions. The main features of the theoretically predicted local-concentration profile are found to be in good agreement with our Monte Carlo simulations for the same model. In particular, in the limiting case of large wall-to-wall separation, the predictions of previous work, concerning the structure of a suspension in the neighborhood of a highly repulsive wall, are found to agree with our simulation results.