Coarse-Grained Counterions in the Strong Coupling Limit

  title={Coarse-Grained Counterions in the Strong Coupling Limit},
  author={Hiroshi Frusawa},
  journal={Journal of the Physical Society of Japan},
  • H. Frusawa
  • Published 15 March 2004
  • Physics
  • Journal of the Physical Society of Japan
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… 
4 Citations

Figures from this paper

Interaction between two inhomogeneously charged parallel surfaces in the strong coupling regime.
The counterion density profile and pressure between two inhomogenously charged parallel plates are analyzed analytically and numerically in the strong-coupling regime and it is found that when the surface charge distribution is inhomogeneous, the charge coupling effect becomes stronger, the counterion spatial distribution is more localized toward the plate surfaces, and, thus, thepressure between two plates becomes lower.
Functional?integral approach to Coulomb fluids in the strong coupling limit
We have developed a field theory for strongly coupled Coulomb fluids, via introducing new functional?integral transformation of the electrostatic interaction energy. Our formalism not only reproduces
Effects of dielectric discontinuities on two charged plates.
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.


Simulations of counterions at charged plates
The counterion density profile is obtained and compared with both the Poisson-Boltzmann theory and the strong-coupling theory and with previously calculated correction terms to both theories for different values of the coupling parameter, establishing the domain of validity of the asymptotic limits.
Beyond Poisson–Boltzmann: Images and correlations in the electric double layer. I. Counterions only
The general solution to the zero size mean spherical model is found for an inhomogeneous electrolyte (with specified profile) between charged planar surfaces. The analysis includes the effects of
Charge fluctuations and counterion condensation.
It is argued that for high surface charge, fluctuations can lead to a phase transition in which a large fraction of counterions is condensed, and it is shown that depending on the valence, the condensation is either a first-order or a smooth transition.
Electrostatistics of counter-ions at and between planar charged walls: From Poisson-Boltzmann to the strong-coupling theory
Abstract:The Poisson-Boltzmann (PB) approach gives asymptotically exact counter-ion density profiles around macroscopic charged objects and forces between macroscopic charged objects in the
Colloquium: The physics of charge inversion in chemical and biological systems
The authors review recent advances in the physics of strongly interacting charged systems functioning in water at room temperature. In these systems, many phenomena go beyond the framework of
Strongly coupled plasmas: high-density classical plasmas and degenerate electron liquids
Classical and degenerate, strongly coupled plasmas are approached by computer simulations, analytic theories, and variational methods. Thermodynamic properties predicted in those various approaches
Electrostatic correlations: from plasma to biology
The thermodynamic consequences of electrostatic correlations in a variety of systems ranging from classical plasmas to molecular biology are reviewed.
Effective interactions between electric double layers.
This review summarizes and assesses recent theoretical and experimental advances, with special emphasis on the effective interaction between charge-stabilized colloids, in the bulk or in confined
Electrostatic effects in soft matter and biophysics
Preface. List of Participants. Structure and dynamic properties of membrane lipid and protein M. Caffrey. Cell model and Poisson-Boltzmann theory: A brief introduction M. Deserno, C. Holm. DNA
Intermolecular and surface forces