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Updated: Feb 9, 2026

Single Molecule Methods for Monitoring Changes in Bilayer Elastic Properties
Published on: November 3, 2008
Curvature Elasticity of the Electric Double Layer
Guilherme Volpe Bossa1, Bjorn K Berntson2, Sylvio May1
1Department of Physics, North Dakota State University, Fargo, North Dakota 58108-6050, USA.
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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