title: 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 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.
authors.affiliation: Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
authors.forename: M V
authors.initials: MV
authors.lastname: Sapozhnikov
authors.forename: Y V
authors.initials: YV
authors.lastname: Tolmachev
authors.forename: I S
authors.initials: IS
authors.lastname: Aranson
authors.forename: W-K
authors.initials: WK
authors.lastname: Kwok