High-Acceleration Patterns in Thin Vibrated Granular Layers

Details High-Acceleration Patterns in Thin Vibrated Granular Layers High-Acceleration Patterns in Thin Vibrated Granular Layers

1999-10-07

arxiv.org/abs/cond-mat/9910099v1

Physics

Condensed Matter

Soft Condensed Matter

18 pages, 16 figures, submitted to Phys. Rev. E

Scientific paper

Theoretical and experimental study of high-acceleration patterns in vibrated granular layers is presented. The order parameter model based on parametric Ginzburg-Landau equation is used to describe strongly nonlinear excitations including hexagons, interface between flat anti-phase domains and new localized objects, super-oscillons. The experiments confirmed the existence of super-oscillons and bound states of super-oscillons and interfaces. On the basis of order parameter model we predict analytically and confirm experimentally that the additional subharmonic driving results in controlled motion of the interfaces.

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