Dynamic self-assembly and patterns in electrostatically driven granular media

Dynamic self-assembly and patterns in electrostatically driven granular media

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: toroida...

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Veröffentlicht in:Physical review letters 2003-03, Vol.90 (11), p.114301-114301, Article 114301
Hauptverfasser: Sapozhnikov, M V, Tolmachev, Y V, Aranson, I S, Kwok, W-K
Format: Artikel
Sprache:eng
Schlagworte:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONDENSATES
CRYSTALS
DYNAMICS
ELECTRIC FIELDS
ELECTROHYDRODYNAMICS
LIQUIDS
RINGS
VORTICES
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Beschreibung
Zusammenfassung: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.90.114301