title: Kink-induced transport and segregation in oscillated granular layers.
abstract: We use experiments and molecular dynamics simulations of vertically oscillated granular layers to study horizontal particle segregation induced by a kink (a boundary between domains oscillating out of phase). Counterrotating convection rolls carry the larger particles in a bidisperse layer along the granular surface to a kink, where they become trapped. The convection originates from avalanches that occur inside the layer, along the interface between solidified and fluidized grains. The position of a kink can be controlled by modulation of the container frequency, making possible systematic harvesting of the larger particles.
authors.affiliation: Center for Nonlinear Dynamics and Department of Physics, University of Texas, Austin, Texas 78712, USA. moon@chaos.utexas.edu
authors.forename: Sung Joon
authors.initials: SJ
authors.lastname: Moon
authors.forename: Daniel I
authors.initials: DI
authors.lastname: Goldman
authors.forename: J B
authors.initials: JB
authors.lastname: Swift
authors.forename: Harry L
authors.initials: HL
authors.lastname: Swinney