Issue 1, 2018

Polarization energy of two charged dielectric spheres in close contact

Abstract

Evaluating the interaction energy between charged dielectric spheres in close contact is difficult because interfacial charge polarization becomes increasingly stronger as separation decreases. The limit of high dielectric permittivity is amenable to theoretical treatment because the particles become equipotential upon close contact. For particles with low permittivity, the constitutive equation for the induced surface charges demanded by the boundary conditions is derived in this work, based on which the contact energy of symmetric cases is evaluated. The known result for conducting spheres is recovered as a limiting case.

Graphical abstract: Polarization energy of two charged dielectric spheres in close contact

Article information

Article type
Paper
Submitted
18 Sept. 2017
Accepted
27 Okt. 2017
First published
27 Okt. 2017

Mol. Syst. Des. Eng., 2018,3, 197-203

Polarization energy of two charged dielectric spheres in close contact

H. Lian and J. Qin, Mol. Syst. Des. Eng., 2018, 3, 197 DOI: 10.1039/C7ME00105C

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