Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session K53: Nonequilibrium Statistical Mechanics and Hydrodynamics of Active Matter I
8:00 AM–11:00 AM,
Wednesday, March 7, 2018
LACC Room: 513
Sponsoring Units: GSOFT GSNP DFD
Chair: Dibyendu Mandal, Univ of California - Berkeley
Abstract: K53.00008 : Structure and Dynamics of Active Nematics under Circular Confinement - A Microscopic Simulation Study*
9:48 AM–10:00 AM
Experimental work on circularly confined active nematics has shown interesting phenomena such as buckling, phase-separation and circulation, behaviors which are not readily captured in continuum models. Here, we use a particle-based computational model to study the dynamics of a confined active nematic, as a function of confinement size, activity, and the flexibility of the nematogens. We find that the behavior exhibited by this model qualitatively agrees with those of experiments. In particular, we find phase-separated circulation for sufficiently large activities, formation of defect dipoles for moderate activities and stiffnesses, and buckling at high stiffnesses and strong confinement.
*This work was supported by the NSF MRSEC DMR-1420382.
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