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  • Title: Models of membrane electrostatics.
    Author: Cahill K.
    Journal: Phys Rev E Stat Nonlin Soft Matter Phys; 2012 May; 85(5 Pt 1):051921. PubMed ID: 23004801.
    Abstract:
    Formulas are derived for the electrostatic potential of a charge in or near a membrane modeled as one or more dielectric slabs lying between two semi-infinite dielectrics. One can use these formulas in Monte Carlo codes to compute the distribution of ions near cell membranes more accurately than by using Poisson-Boltzmann theory or its linearized version. Here I use them to discuss the electric field of a uniformly charged membrane, the image charges of an ion, the distribution of salt ions near a charged membrane, the energy of a zwitterion near a lipid slab, and the effect of including the phosphate head groups as thin layers of high electric permittivity.
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