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Mechanical equilibrium of aggregates of dielectric spheres

A. F. V. Matias, T. Shinbrot, and N. A. M. Araújo
Phys. Rev. E 98, 062903 – Published 21 December 2018

Abstract

Industrial as well as natural aggregation of fine particles is believed to be associated with electrostatics. Yet like charges repel, so it is unclear how similarly treated particles aggregate. To resolve this apparent contradiction, we analyze conditions necessary to hold aggregates together with electrostatic forces. We find that aggregates of particles charged with the same sign can be held together due to dielectric polarization, we evaluate the effect of aggregate size, and we briefly summarize consequences for practical aggregation.

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  • Received 22 August 2018

DOI:https://doi.org/10.1103/PhysRevE.98.062903

©2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsStatistical Physics & Thermodynamics

Authors & Affiliations

A. F. V. Matias1,2,*, T. Shinbrot3,†, and N. A. M. Araújo1,2,‡

  • 1Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisbon, Portugal
  • 2Centro de Física Teórica e Computacional, Universidade de Lisboa, 1749-016 Lisbon, Portugal
  • 3Department of Biomedical Engineering, Rutgers University, Piscataway, New Jersey 08854, USA

  • *afmatias@alunos.fc.ul.pt
  • shinbrot@rutgers.edu
  • nmaraujo@fc.ul.pt

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Issue

Vol. 98, Iss. 6 — December 2018

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