1303.6546 (Derek Frydel et al.)

The double-layer of penetrable ions: an alternative route to charge
reversal    [PDF]

Derek Frydel, Yan Levin

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.

View original: http://arxiv.org/abs/1303.6546