Attraction between like-charged colloidal particles induced by a surface: A density-functional analysis
Department of Chemistry, University of Cambridge
Lensfield Road, Cambridge CB2 1EW, UK
Accepted: 22 February 1999
We show that the first non-linear correction to the linearised Poisson-Boltzmann (or DLVO) theory of effective pair interactions between charge-stabilised, colloidal particles near a charged wall leads to an attractive component of entropic origin. The position and depth of the potential compare favourably with recent experimental measurements.
PACS: 82.70.Dd – Colloids / 64.10.+h – General theory of equations of state and phase equilibria / 83.20.Di – Microscopic (molecular) theories
© EDP Sciences, 1999