title: The double-layer of penetrable ions: an alternative route to charge reversal.
abstract: We investigate a double-layer of penetrable ions near a charged wall. We find a new mechanism for charge reversal that occurs in the weak-coupling regime and, accordingly, the system is suitable for the mean-field analysis. The penetrability is achieved by smearing-out the ionic charge inside a sphere, so there is no need to introduce non-electrostatic forces and the system in the low coupling limit can be described by a modified version of the Poisson-Boltzmann equation. The predictions of the theory are compared with the Monte Carlo simulations.
authors: Institute of Physics, The Federal University of Rio Grande do Sul, PO Box 15051, 91501-970 Porto Alegre, RS, Brazil.
authors: Derek
authors: D
authors: Frydel
authors: Yan
authors: Y
authors: Levin