Ordered clusters and dynamical states of particles in a vibrated fluid

Abstract

Fluid-mediated interactions between particles in a vibrating fluid lead to both long range attraction and short range repulsion. The resulting patterns include hexagonally ordered micro-crystallites, time-periodic structures, and chaotic fluctuating patterns with complex dynamics. A model based on streaming flow gives a good quantitative account of the attractive part of the interaction.

4 pages, 5 figures, submitted to Phys. Rev. Lett

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