Electrostatically Driven Granular Media: Phase Transitions and Coarsening
- 10 April 2000
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 84 (15), 3306-3309
- https://doi.org/10.1103/physrevlett.84.3306
Abstract
We report the experimental and theoretical study of electrostatically driven granular material. We show that the charged granular medium undergoes a hysteretic phase transition from the immobile condensed state (granular solid) to a fluidized dilated state (granular gas) with a changing applied electric field. In addition we observe a spontaneous precipitation of dense clusters from the gas phase and subsequent coarsening—coagulation of these clusters. Molecular dynamics simulations show qualitative agreement with experimental results.Keywords
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