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See detailStripe patterns in self-stratification experiments
Lecocq, N.; Vandewalle, Nicolas ULg

in Fractals-Complex Geometry Patterns and Scaling in Nature and Society (2003), 11(Suppl. S), 259-269

We report pattern formation of complex stripes with binary and ternary granular mixtures. Ternary mixtures lead to a particular ordering of the strates which was not accounted for in former explanations ... [more ▼]

We report pattern formation of complex stripes with binary and ternary granular mixtures. Ternary mixtures lead to a particular ordering of the strates which was not accounted for in former explanations. Bouncing grains are found to have an important effect on strate formation. A complementary mechanism for self-stratification of binary and ternary granular mixtures is proposed. This mechanism leads to a simple model. Eventually we report the observation of self-stratification for a binary mixture of grains of the same size but with different shapes. [less ▲]

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