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arXiv · 1808.01180

Curvature Elasticity of the Electric Double Layer

Guilherme Volpe Bossa·Bjorn K. Berntson·Sylvio May
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Abstract

Mean-field electrostatics is used to calculate the bending moduli of an electric double layer for fixed surface charge density of a macroion in a symmetric 1:1 electrolyte. The resulting expressions for bending stiffness, Gaussian modulus, and spontaneous curvature refer to a general underlying equation of state of the electrolyte, subject to a local density approximation and the absence of dipole and higher-order fields. We present results for selected applications: the lattice-gas Poisson-Fermi model with and without asymmetric ion sizes, and the Poisson-Carnahan-Starling model.

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Guilherme Volpe Bossa, Bjorn K. Berntson, Sylvio May. 2018-08-03. Curvature Elasticity of the Electric Double Layer. https://doi.org/10.1103/physrevlett.120.215502

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