# Coarse-Grained Counterions in the Strong Coupling Limit

@article{Frusawa2004CoarseGrainedCI, title={Coarse-Grained Counterions in the Strong Coupling Limit}, author={Hiroshi Frusawa}, journal={Journal of the Physical Society of Japan}, year={2004}, volume={73}, pages={507-510} }

Recent Monte Carlo simulations [A. G. Moreira and R. R. Netz: Eur. Phys. J. E 8 (2002) 33] in the strong Coulomb coupling regime suggest strange counterion electrostatics unlike the Poisson–Boltzmann picture: when counterion–counterion repulsive interactions are much larger than counterion–macroion attraction, the coarse-grained counterion distribution around a macroion is determined only by the latter, and the former is irrelevant. Here, we offer an explanation for the apparently paradoxical…

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Bulk counterions that are dissolved in water are driven to the midplane of the slab because of their repulsive interaction with their image charges, and the pressure between two charged plates becomes less repulsive since the low dielectric constant of the hydrocarbon substrate creates stronger association between counterions and surface charges.

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