title: Experimental observations of oscillations and segregation in a binary granular mixture.
abstract: We present experimental evidence for a "granular clock." We use a setup in which vertical vibrations (10-20 Hz) of a bidisperse granular medium cause horizontal oscillations (periods in the order of minutes) between two connected compartments. Moreover, we present the first experimental evidence for full segregation of smaller particles into one compartment, leaving the larger ones in the other compartment. Simulations, using a simple model, describe phenomenologically the observed oscillations.
authors.affiliation: Max-Planck-Institut für molekulare Physiologie, Postfach 500247, 44202 Dortmund, Germany.
authors.forename: Sparisoma
authors.initials: S
authors.lastname: Viridi
authors.forename: Malte
authors.initials: M
authors.lastname: Schmick
authors.forename: Mario
authors.initials: M
authors.lastname: Markus