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Phys Rev Lett. 2007 Aug 17;99(7):077801. Epub 2007 Aug 17.

Dipolar Poisson-Boltzmann equation: ions and dipoles close to charge interfaces.

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School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.


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 interplate pressure.

[Indexed for MEDLINE]

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