Regensburg 2016 – scientific programme
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BP: Fachverband Biologische Physik
BP 30: Microswimmers I (Joint Session with DY)
BP 30.11: Talk
Tuesday, March 8, 2016, 12:30–12:45, H47
Cross-stream transport of asymmetric particles driven by oscillating shear — •Matthias Laumann1, Paul Bauknecht2, Stephan Gekle2, Diego Kienle1, and Walter Zimmerman1 — 1Theoretische Physik I, Universität Bayreuth, 95440 Bayreuth, Germany — 2Biofluid Simulation and Modeling, Universität Bayreuth, 95440 Bayreuth, Germany
We study the dynamics of asymmetric, deformable particles in oscillatory, linear shear flow. By simulating the motion of a dumbbell, a ring polymer, and a capsule we show that cross-stream migration occurs for asymmetric elastic particles even in linear shear flow if the shear rate varies in time. The migration is generic as it does not depend on the particle dimension. Importantly, the migration velocity and migration direction are robust to variations of the initial particle orientation, making our proposed scheme suitable for sorting applications of various elastic Janus-like particles.