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Interaction between Charged Surfaces Mediated by Rodlike Counterions: The Influence of Discrete Charge Distribution in the Solution and on the Surfaces
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Physical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Physical Chemistry.
2010 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 26, no 9, 6343-6349 p.Article in journal (Refereed) Published
Abstract [en]

The interaction between two charged surfaces, with discrete or uniform charge distributions, embedded in a solution of rodlike counterions has been studied. Monte Carlo simulations and density functional theory have been applied to study the concentration profiles of counterions and the force between the charged surfaces. We show that for low surface charge densities the repulsive force between like-charged surfaces is observed regardless of the rod length. Where high surface charge densities are present, attractive forces at surface separations related to the rod length are observed.

Place, publisher, year, edition, pages
2010. Vol. 26, no 9, 6343-6349 p.
National Category
Physical Chemistry
Research subject
Physical Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-122555DOI: 10.1021/la903940jISI: 000276969700044PubMedID: 20070107OAI: oai:DiVA.org:uu-122555DiVA: diva2:310509
Available from: 2010-04-14 Created: 2010-04-14 Last updated: 2017-12-12Bibliographically approved

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Grime, John M. A.Khan, Malek O.

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