Large-scale dynamics of colloidal gyrofluids

ORAL

Abstract

We study the collective behavior of colloidal magnets in rotating magnetic fields. When spun by the field, these particles coalesce into large aggregates owing to their magnetic interactions. These aggregates, composed of millions of particles, behave like a chiral fluid with unusual properties. In this talk, we report our experimental observations of the fluid dynamics and instabilities of this curious fluid.

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Authors

  • Sofia Magkiriadou

    University of Chicago

  • Vishal Soni

    University of Chicago

  • Theodore Hueckel

    New York University

  • Benjamin C. van Zuiden

    Leiden University

  • Vincenzo Vitelli

    Lorentz Institute for Theoretical Physics, Leiden University, Institute Lorentz, Leiden University, Lorentz Institute, University of Leiden

  • Stefano Sacanna

    New York Univ NYU, New York University

  • William T. M. Irvine

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