Hydrodynamic Instability of a Chiral Active Fluid

ORAL

Abstract

We study the collective dynamics of spinning colloidal magnets suspended in water. When they spin, these particles attract and form a cohesive material that behaves like a fluid. We probe, experimentally, the fluid dynamics of this two-dimensional magnetic gyrofluid. In particular, we find that, under certain conditions, it can undergo a hydrodynamic instability that causes it to break up into droplets. We investigate this instability, and we use a hydrodynamic model to understand its origin.

–

Presenters

  • Sofia Magkiriadou

    • Univ of Chicago
    • University of Chicago

Authors

  • Sofia Magkiriadou

    • Univ of Chicago
    • University of Chicago

  • Vishal Soni

    • Univ of Chicago
    • University of Chicago

  • Stefano Sacanna

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

  • Denis Bartolo

    • ENS - Lyon
    • ENS Lyon
    • ENS de Lyon
    • Physics, ENS de Lyon

  • Michael Shelley

    • Center for Computational Biology, Simons Foundation; Courant Institute of Mathematical Science, New York University
    • New York University
    • Courant Institute/Flatiron Institute
    • Center for Computational Biology, Flatiron Institute, Simons Foundation
    • Flatiron Institute, Simons Foundation
    • Center for Computational Biology, Flatiron Institute
    • Flatiron Institute
    • CCB, Flatiron Institute

  • William Irvine

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