Electrostatic interactions between spheroidal dielectric particles

Derbenev, Ivan N.; Filippov, Anatoly V.; Stace, Anthony J.; Besley, Elena

Abstract

Theory is developed to address the significant problem of electrostatic interactions between charged polarizable dielectric spheroids. The electrostatic force is defined by particle dimensions and charge, dielectric constants of the interacting particles and medium, and the interparticle separation distance; and it is expressed in the form of an integral over the particle surface. The switching behavior between like charge repulsion and attraction is demonstrated as depending on the ratio of the major and minor axes of spheroids. When the major and minor axes are equal, the theory yields a solution equivalent to that obtained for spherical particles. Limiting cases are presented for nonpolarizable spheroids, which describe the electrostatic behavior of charged rods, discs, and point charges. The developed theory represents an important step toward comprehensive understanding of direct interactions and mechanisms of electrostatically driven self-assembly processes.

Citation

Derbenev, I. N., Filippov, A. V., Stace, A. J., & Besley, E. (2020). Electrostatic interactions between spheroidal dielectric particles. Journal of Chemical Physics, 152(2), Article 024121. https://doi.org/10.1063/1.5129756

• Journal Article Type: Article
• Acceptance Date: Dec 24, 2019
• Online Publication Date: Jan 13, 2020
• Publication Date: Jan 14, 2020
• Deposit Date: Mar 26, 2020
• Publicly Available Date: Apr 6, 2020
• Journal: The Journal of Chemical Physics
• Print ISSN: 0021-9606
• Electronic ISSN: 1089-7690
• Publisher: American Institute of Physics
• Peer Reviewed: Peer Reviewed
• Volume: 152
• Issue: 2
• Article Number: 024121
• DOI: https://doi.org/10.1063/1.5129756
• Keywords: Physical and Theoretical Chemistry; General Physics and Astronomy
• Public URL: https://nottingham-repository.worktribe.com/output/3753214
• Publisher URL: https://aip.scitation.org/doi/10.1063/1.5129756
• Additional Information: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in: Ivan N. Derbenev, Anatoly V. Filippov, Anthony J. Stace, Elena Besley, Electrostatic interactions between spheroidal dielectric particles, J. Chem. Phys. 152, 024121 (2020) and may be found at https://aip.scitation.org/doi/10.1063/1.5129756.