Gases, liquids and crystals in granular segregation

Details Gases, liquids and crystals in granular segregation Gases, liquids and crystals in granular segregation

2003-12-12

arxiv.org/abs/cond-mat/0312331v2

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 4 figures, in press, accepted for publication in Europhysics Letters (new revised version after refereeing process)

Scientific paper

10.1209/epl/i2003-10210-4

We report the results of an experimental investigation of segregation in a binary mixture of dry particles subjected to horizontal oscillatory excitation. The thin layer of particles was driven by the stick--slip frictional interaction with the surface of a horizontal tray. As the packing fraction of the mixture was increased the evolution of distinct phases was observed. We identified them as a binary gas, segregation liquid and segregation crystal and provide both microscopic and macroscopic measures to identify their properties. Finally, we draw some analogies between segregation in our granular system and self-assembly in binary colloidal mixtures.

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