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Polarization energy of two charged dielectric spheres in close contact

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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

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Publication details

The article was received on 18 Sep 2017, accepted on 27 Oct 2017 and first published on 27 Oct 2017


Article type: Paper
DOI: 10.1039/C7ME00105C
Citation: Mol. Syst. Des. Eng., 2018, Advance Article
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    Polarization energy of two charged dielectric spheres in close contact

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

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