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Dressed counterions: Strong electrostatic coupling in the presence of salt

Kanduc, Matej; Naji, Ali; Forsman, Jan LU and Podgornik, Rudolf (2010) In Journal of Chemical Physics 132(12).
Abstract
We reformulate the theory of strong electrostatic coupling in order to describe an asymmetric electrolyte solution of monovalent salt ions and polyvalent counterions using field-theoretical techniques and Monte Carlo simulations. The theory is based on an asymmetric treatment of the different components of the electrolyte solution. The weak coupling Debye-Huumlckel approach is used in order to describe the monovalent salt ions while a strong coupling approach is used to tackle the polyvalent counterions. This combined weak-strong coupling approach effectively leads to dressed interactions between polyvalent counterions and thus directly affects the correlation attraction mediated by polyvalent counterions between like-charged objects. The... (More)
We reformulate the theory of strong electrostatic coupling in order to describe an asymmetric electrolyte solution of monovalent salt ions and polyvalent counterions using field-theoretical techniques and Monte Carlo simulations. The theory is based on an asymmetric treatment of the different components of the electrolyte solution. The weak coupling Debye-Huumlckel approach is used in order to describe the monovalent salt ions while a strong coupling approach is used to tackle the polyvalent counterions. This combined weak-strong coupling approach effectively leads to dressed interactions between polyvalent counterions and thus directly affects the correlation attraction mediated by polyvalent counterions between like-charged objects. The general theory is specifically applied to a system composed of two uniformly charged plane-parallel surfaces in the presence of salt and polyvalent counterions. In the strong coupling limit for polyvalent counterions, the comparison with Monte Carlo simulations shows good agreement for large enough values of the electrostatic coupling parameter. We delineate two limiting laws that in fact encompass all the Monte Carlo data. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
electrolytes, Monte Carlo methods, positive ions, fields, electric, dressed states, atom-photon collisions, Debye-Huckel theory
in
Journal of Chemical Physics
volume
132
issue
12
publisher
American Institute of Physics
external identifiers
  • wos:000276209700037
  • scopus:77950388636
ISSN
0021-9606
DOI
10.1063/1.3361672
language
English
LU publication?
yes
id
60eb6b6e-1a57-4128-a333-2ef37be165d3 (old id 1587023)
date added to LUP
2010-04-27 12:03:57
date last changed
2018-06-03 03:21:57
@article{60eb6b6e-1a57-4128-a333-2ef37be165d3,
  abstract     = {We reformulate the theory of strong electrostatic coupling in order to describe an asymmetric electrolyte solution of monovalent salt ions and polyvalent counterions using field-theoretical techniques and Monte Carlo simulations. The theory is based on an asymmetric treatment of the different components of the electrolyte solution. The weak coupling Debye-Huumlckel approach is used in order to describe the monovalent salt ions while a strong coupling approach is used to tackle the polyvalent counterions. This combined weak-strong coupling approach effectively leads to dressed interactions between polyvalent counterions and thus directly affects the correlation attraction mediated by polyvalent counterions between like-charged objects. The general theory is specifically applied to a system composed of two uniformly charged plane-parallel surfaces in the presence of salt and polyvalent counterions. In the strong coupling limit for polyvalent counterions, the comparison with Monte Carlo simulations shows good agreement for large enough values of the electrostatic coupling parameter. We delineate two limiting laws that in fact encompass all the Monte Carlo data.},
  articleno    = {124701},
  author       = {Kanduc, Matej and Naji, Ali and Forsman, Jan and Podgornik, Rudolf},
  issn         = {0021-9606},
  keyword      = {electrolytes,Monte Carlo methods,positive ions,fields,electric,dressed states,atom-photon collisions,Debye-Huckel theory},
  language     = {eng},
  number       = {12},
  publisher    = {American Institute of Physics},
  series       = {Journal of Chemical Physics},
  title        = {Dressed counterions: Strong electrostatic coupling in the presence of salt},
  url          = {http://dx.doi.org/10.1063/1.3361672},
  volume       = {132},
  year         = {2010},
}