Surface Dynamics of Chiral Colloidal Gyrofluids

ORAL

Abstract

Colloidal magnets, when spun by a rotating external field, coalesce into a fluid-like state. This fluid exhibits rich interfacial dynamics, which we explore in this talk. In particular, we observe experimentally and explain theoretically the propagation and dissipation of chiral surface waves. Unlike capillary waves in water, their propagation relies neither on inertia nor on surface tension. In contrast viscosity and spinning motion conspire against surface tension to sustain their unidirectional propagation.

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Presenters

  • Vishal Soni

    Univ of Chicago, University of Chicago

Authors

  • Vishal Soni

    Univ of Chicago, University of Chicago

  • Sofia Magkiriadou

    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