Effective macroion-macroion potentials in asymmetric electrolytes.
Effective macroion-macroion potentials in solutions of macroions carrying 60 elementary charges and either monovalent or divalent counterions have been calculated at different concentrations by means of Monte Carlo simulations with a consequent inversion of radial distribution functions according to Lyubartsev and Laaksonen [Phys. Rev. E 52, 3730 (1995)]. With monovalent counterions, the effective potentials are essentially of a Yukawa type, whereas with divalent ones, an attractive region appears at short separation. A charge renormalization scheme invoking the cell model and the assumption of a Yukawa-type potential works favorably only in the case of monovalent counterions.
Lobaskin
V
V
Soft Condensed Matter Group, Institute of Physics, University of Fribourg, CH-1700 Fribourg, Switzerland. Vladimir.Lobaskin@unifr.ch
Lyubartsev
A
A
Linse
P
P
D055592:Biophysical Phenomena; D001703:Biophysics; D004573:Electrolytes / Q000737:chemistry*; D007477:Ions; D009010:Monte Carlo Method
D004573:Electrolytes; D007477:Ions