Counterion density profiles at charged flexible membranes

Details Counterion density profiles at charged flexible membranes Counterion density profiles at charged flexible membranes

2004-09-17

arxiv.org/abs/physics/0409085v1

Physics

Biological Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.128101

Counterion distributions at charged soft membranes are studied using perturbative analytical and simulation methods in both weak coupling (mean-field or Poisson-Boltzmann) and strong coupling limits. The softer the membrane, the more smeared out the counterion density profile becomes and counterions pentrate through the mean-membrane surface location, in agreement with anomalous scattering results. Membrane-charge repulsion leads to a short-scale roughening of the membrane.

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