Electrostatically-Driven Granular Media: Phase Transitions and Coarsening

Abstract

We report the experimental and theoretical study of electrostatically driven granular material. We show that the charged granular medium undergoes a hysteretic first order 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 shows qualitative agreement with experimental results.

arXiv comment3 pages, 5 figures, submitted to Phys. Rev. Lett

References in corpus (2)

• Weak selection and stability of localized distributions in Ostwald ripening
• Controlled Dynamics of Interfaces in a Vibrated Granular Layer

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