The odd flows of an active chiral annulus

ORAL

Abstract

The axisymmetric flow patterns due to the rotation and collapse of an actively driven annular chiral fluid monolayer composed of millions of micron-sized colloidal magnets sitting on a passive subphase are studied. Exact representations for the flow field are given in terms of solutions to a singular integral equation. The effects of odd viscosity (a.k.a. Hall viscosity), an allowed but poorly-understood component of the viscous stress tensor in two-dimensional time reversal symmetry-breaking fluids, on the closure of the hole are investigated. Our work suggests that experimentally measuring the closure time could be a novel method of estimating this elusive parameter.

*National Science Foundation MRSEC Program at The University of Chicago (Grant DMR-1420709) and a Packard Fellowship

–

Presenters

  • Leroy Jia

    • Flatiron Institute

Authors

  • Leroy Jia

    • Flatiron Institute

  • Ephraim Bililign

    • University of Chicago

  • Florencio Balboa Usabiaga

    • Basque Center for Applied Math
    • Flatiron Institute

  • Michael Shelley

    • Simons Foundation
    • CCB, Flatiron Institute
    • Flatiron Institute/NYU
    • Flatiron Institute and New York University
    • Flatiron Institute, Center for Computational Biology, Simons Foundation
    • Center for Computational Biology, Flatiron Institute
    • Center for Computational Biology, Flatiron Institute, Simons Foundation
    • Courant/NYU and Flatironinstitute

  • william Thomas Mark irvine

    • University of Chicago
    • University of Chicago, James Franck Institute
    • James Franck Institute, University of Chicago