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Dynamic self-assembly and patterns in electrostatically driven granular media

M. V. Sapozhnikov·Y. V. Tolmachev·I. S. Aranson·W. -K. Kwok
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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.

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M. V. Sapozhnikov, Y. V. Tolmachev, I. S. Aranson, W. -K. Kwok. 2002-11-05. Dynamic self-assembly and patterns in electrostatically driven granular media. https://doi.org/10.1103/physrevlett.90.114301

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