Abstract.
A system of three electrolytes separated by two parallel planes is considered. Each region is described by a dielectric constant and a Coulomb fluid in the Debye-Hückel regime. In their book Dispersion Forces, Mahanty and Ninham have given the van der Waals free energy of this system. We rederive this free energy by a different method, using linear response theory and the electrostatic Maxwell stress tensor for obtaining the dispersion force.
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References
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Jancovici, B. A van der Waals free energy in electrolytes revisited. Eur. Phys. J. E 19, 1–4 (2006). https://doi.org/10.1140/epje/e2005-00056-3
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DOI: https://doi.org/10.1140/epje/e2005-00056-3