Nonlinear screening of charged macromolecules

Details Nonlinear screening of charged macromolecules Nonlinear screening of charged macromolecules

2009-12-16

arxiv.org/abs/0912.3247v1

Phil. Trans. R. Soc. A, 369, 322-334 (2011)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1098/rsta.2010.0256

We present several aspects of the screening of charged macromolecules in an electrolyte. After a review of the basic mean field approach, based on the linear Debye-Huckel theory, we consider the case of highly charged macromolecules, where the linear approximation breaks down and the system is described by full nonlinear Poisson-Boltzmann equation. Some analytical results for this nonlinear equation give some interesting insight on physical phenomena like the charge renormalization and the Manning counterion condensation.

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