A van der Waals free energy in electrolytes revisited

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.

arXiv comment7 pages. PACS numbers updated. References updated

References in corpus (3)

• The Casimir force at high temperature
• Casimir force between two ideal-conductor walls revisited
• Screening of classical Casimir forces by electrolytes in semi-infinite geometries

Cited by in corpus (1)

• Anomaly of the dielectric function of water under confinement and its role in Van der Waals interactions