Controlled Dynamics of Interfaces in a Vibrated Granular Layer

Details Controlled Dynamics of Interfaces in a Vibrated Granular Layer Controlled Dynamics of Interfaces in a Vibrated Granular Layer

1998-10-12

arxiv.org/abs/patt-sol/9810005v1

Nonlinear Sciences

Pattern Formation and Solitons

4 pages, 6 figures, RevTex

Scientific paper

10.1103/PhysRevLett.82.731

We present experimental study of a topological excitation, {\it interface}, in a vertically vibrated layer of granular material. We show that these interfaces, separating regions of granular material oscillation with opposite phases, can be shifted and controlled by a very small amount of an additional subharmonic signal, mixed with the harmonic driving signal. The speed and the direction of interface motion depends sensitively on the phase and the amplitude of the subharmonic driving.

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