Volume 89, Number 2, January 2010
|Number of page(s)||6|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||04 February 2010|
Electrostatic interactions of charged bodies from the weak- to the strong-coupling regime
School of Chemical Engineering and Analytical Science, The University of Manchester PO Box 88, Sackville Street, Manchester M60 1QD, UK, EU
Corresponding author: email@example.com
Accepted: 6 January 2010
A simple field theory approach is developed to model the properties of charged, dielectric bodies and their associated counterions. This predictive theory is able to accurately describe the properties of systems (as compared to computer simulation data) from the weak-coupling limit, where the Poisson-Boltzmann theory works well, through to the strong-coupling limit. In particular, it is able to quantitatively describe the attraction between like-charged plates. In addition, the theory remains accurate even in the presence of dielectric bodies, properly accounting for the influence of image charge interactions. The theory is compared to the strong-coupling expansion, which is found to be applicable only in certain limited situations when dielectric variations are present.
PACS: 52.25.Kn – Thermodynamics of plasmas / 05.20.Jj – Statistical mechanics of classical fluids / 61.20.Gy – Theory and models of liquid structure
© EPLA, 2010
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