Hexagons, Kinks and Disorder in Oscillated Granular Layers

Details Hexagons, Kinks and Disorder in Oscillated Granular Layers Hexagons, Kinks and Disorder in Oscillated Granular Layers

1995-07-17

arxiv.org/abs/patt-sol/9507003v1

Nonlinear Sciences

Pattern Formation and Solitons

4 pages. The RevTeX file has a macro allowing various styles. The appropriate style is "myprint" which is the default

Scientific paper

10.1103/PhysRevLett.75.3838

Experiments on vertically oscillated granular layers in an evacuated container reveal a sequence of well-defined pattern bifurcations as the container acceleration is increased. Period doublings of the layer center of mass motion and a parametric wave instability interact to produce hexagons and more complicated patterns composed of distinct spatial domains of different relative phase separated by kinks (phase discontinuities). Above a critical acceleration, the layer becomes disordered in both space and time.

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