Dynamic self-assembly and patterns in electrostatically driven granular media

Abstract

We show that granular media consisting of metallic microparticles immersed in a poorly conducting liquid in strong DC electric field self-assemble a rich variety of novel phases. These phases include static precipitate: honeycombs and Wigner crystals; and novel dynamic condensate: toroidal vortices and pulsating rings. The observed structures are explained by the interplay between charged granular gas and electrohydrodynamic convective flows in the liquid.

4 pages, 6 figures, submitted to Phys.Rev.Lett

References in corpus (3)

• Electrostatically-Driven Granular Media: Phase Transitions and Coarsening
• Ordered clusters and dynamical states of particles in a vibrated fluid
• Phase Separation and Coarsening in Electrostatically Driven Granular Media

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