APS Logo

Theory of activity-powered interfacial fluctuations

ORAL

Abstract

Motivated by experimental studies of the dynamics of active interfaces in microtubule-based active matter, we formulate a hydrodynamic model that describes the non-equilibrium fluctuations of soft interfaces observed in liquid-liquid phase separation. Numerical solution of the continuum equations reproduces different features of the interfacial dynamics observed in the experiments. Using this model ,we characterize the activity-induced roughening of the active-passive interface, highlighting the role of nonequilibrium active fluctuations.

–

Presenters

  • Zhihong You

    University of California, Santa Barbara

Authors

  • Zhihong You

    University of California, Santa Barbara

  • Raymond Adkins

    Physics, University of California, Santa Barbara, University of California, Santa Barbara

  • Itamar Kolvin

    University of California, Santa Barbara

  • Sven Witthaus

    University of California, Santa Barbara

  • Zvonimir Dogic

    Physics, University of California, Santa Barbara, University of California, Santa Barbara, University of California at Santa Barbara, Santa Barbara, University of California, Santa Barbara, Harvard University, Brandeis University

  • M Cristina Marchetti

    University of California, Santa Barbara, Department of Physics, University of California, Santa Barbara, Department of Physics, University of California, University of California Santa Barbara