Dynamic self-assembly and patterns in electrostatically driven granular media.

نویسندگان

  • M V Sapozhnikov
  • Y V Tolmachev
  • I S Aranson
  • W-K Kwok
چکیده

We show that granular media, consisting of metallic microparticles immersed in a poorly conducting liquid in a strong dc electric field, self-assemble into a rich variety of novel phases. These phases include static precipitates: honeycombs and Wigner crystals; and novel dynamic condensates: 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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عنوان ژورنال:
  • Physical review letters

دوره 90 11  شماره 

صفحات  -

تاریخ انتشار 2003