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.

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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