430842 Controlling Compartmentalization through Active Colloidal Confinement

Tuesday, November 10, 2015: 10:45 AM
Canyon B (Hilton Salt Lake City Center)
Matthew Spellings1, Michael Engel2, Daphne Klotsa3, Syeda Sabrina4, Aaron M. Drews5, Nguyen Nguyen6, Kyle J. M. Bishop4 and Sharon C. Glotzer1, (1)Chemical Engineering, University of Michigan, Ann Arbor, MI, (2)Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, (3)Department of Chemistry, University of Cambridge, Cambridge, United Kingdom, (4)Chemical Engineering, Penn State University, University Park, PA, (5)NanoEngineering, UC San Diego, San Diego, CA, (6)Mechanical Engineering, University of Michigan, Ann Arbor, MI

Active matter is an exciting area of study that displays promising new
behaviors previously unobtainable in equilibrium systems and could
help bridge the gap between equilibrium colloidal- and nanoscale-
particles and living cells. In this talk, we present new results of
novel behaviors that can be observed in confined "cells" of
rotationally-driven particles with and without active boundaries. We
observe different classes of compartmentalization, which are
controllable and can be switched over time. Our results are obtained
using microscopic, non-momentum-conserving Langevin dynamics
simulations and confirmed via a phase field continuum model coupled to
a Navier-Stokes equation that we derive to incorporate hydrodynamic
effects. Our findings provide motivation and design rules for the
fabrication of primitive colloidal machines.

Extended Abstract: File Not Uploaded
See more of this Session: Active Colloidal Systems I
See more of this Group/Topical: Engineering Sciences and Fundamentals