Charging changes contact composition in binary sphere packings

André Schella, Simon Weis, and Matthias Schröter
Phys. Rev. E 95, 062903 – Published 15 June 2017

Abstract

Equal volume mixtures of small and large polytetrafluorethylene spheres are shaken in an atmosphere of controlled humidity which allows one to also control their tribocharging. We find that the contact numbers are charge dependent: As the charge density of the beads increases, the number of same-type contacts decreases and the number of opposite-type contacts increases. This change is not caused by a global segregation of the sample. Hence, tribocharging can be a way to tune the local composition of a granular material.

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  • Received 24 March 2017

DOI:https://doi.org/10.1103/PhysRevE.95.062903

©2017 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Polymers & Soft MatterCondensed Matter, Materials & Applied Physics

Authors & Affiliations

André Schella1,*, Simon Weis2, and Matthias Schröter1,3

  • 1Max Planck Institute for Dynamics and Self-Organization Göttingen, 37077 Göttingen, Germany
  • 2Institute of Theoretical Physics I, University Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany
  • 3Institute for Multiscale Simulation, Friedrich-Alexander University, 91052 Erlangen, Germany

  • *andre.schella@ds.mpg.de

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Issue

Vol. 95, Iss. 6 — June 2017

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