Dipolar Poisson-Boltzmann Equation: Ions and Dipoles Close to Charged Surfaces

Abstract

We present an extension to the Poisson-Boltzmann model where the dipolar features of solvent molecules are taken explicitly into account. The formulation is derived at mean-field level and can be extended to any order in a systematic expansion. It is applied to a two-plate system with oppositely charged surfaces. The ion distribution and profiles in the dipolar order parameter are calculated and can result in a large correction to the inter-plate pressure.

4 pages, 2 figures

References in corpus (1)

• Electrostatic Interactions of Asymmetrically Charged Membranes

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