The odd flows of a colloidal chiral fluid

ORAL

Abstract

We report the assembly of a chiral fluid composed of millions of spinning colloidal magnets. By activating the fluid at the single unit level, we observe macroscopic flows with no counterpart in conventional fluids. Odd viscous stresses drive the propagation of unidirectional free-surface waves damped by odd (or Hall) viscosity. Further, the competition between odd stress and cohesive forces results in intermittent bulk flows, blurring the distinction between solid and liquid.

*NSF MRSEC Program at The University of Chicago (DMR-1420709), NSF EFRI NewLAW grant 1741685, NSF DMR-1905974, a NSF Graduate Research Fellowship, and a Packard Fellowship

–

Presenters

  • Ephraim Bililign

    • University of Chicago

Authors

  • Ephraim Bililign

    • University of Chicago

  • Vishal H Soni

    • University of Chicago

  • Sofia Magkiriadou

    • École Polytechnique Fédérale de Lausanne (EPFL)

  • Stefano Sacanna

    • New York Univ NYU
    • Department of Chemistry, New York University
    • New York University

  • Denis Bartolo

    • Physique, Ecole Normale Superieure de Lyon
    • Univ. Lyon, ENS de Lyon, Univ. Claude Bernard, CNRS, Laboratoire de Physique, F-69342, Lyon, France
    • École Normale Supérieure de Lyon
    • Laboratoire de Physique, Ecole Normale Supérieure de Lyon

  • Michael John Shelley

    • Flatiron Institute
    • New York University
    • Courant Institute, New York University
    • CIMS, New York University

  • William Thomas Mark Irvine

    • University of Chicago