Charging changes contact composition in binary sphere packings

Andre Schella; Simon Weis; Matthias Schroeter

doi:10.1103/PhysRevE.95.062903

Charging changes contact composition in binary sphere packings

Soft Condensed Matter 2017-06-21 v2

Authors: Andre Schella , Simon Weis , Matthias Schroeter

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Abstract

Equal volume mixtures of small and large polytetrafluorethylene (PTFE) spheres are shaken in an atmosphere of controlled humidity which allows to also control their tribo-charging. 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, tribo-charging can be a way to tune the local composition of a granular material.

Keywords

charge transfer

Cite

@article{arxiv.1704.01565,
  title  = {Charging changes contact composition in binary sphere packings},
  author = {Andre Schella and Simon Weis and Matthias Schroeter},
  journal= {arXiv preprint arXiv:1704.01565},
  year   = {2017}
}

Comments

7 Pages, 5 Figures

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