Regensburg 2019 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 20: Active Matter B (joint session DY/CPP)

DY 20.4: Vortrag

Dienstag, 2. April 2019, 14:45–15:00, H3

Dynamics of confined phoretic colloids — •Prathyusha Kokkoorakunnel Ramankutty, Suropriya Saha, and Ramin Golestanian — Max Planck Institue for Dynamics and Self Organization, Am Fassberg 17, Gottingen, Germany

Phoretic colloids are known to form clusters by mechanisms similar to those in black holes formed by long ranged gravitational forces. The long ranged interactions are driven by phoretic response of one colloid to the chemical field generated by others. We investigate the dynamics of uniformly coated colloidal assembly in a confined geometry using Brownian dynamics simulation. In steady state, the colloids self assemble to form a cluster and exhibits slow spontaneous fluctuations. The interesting cluster dynamics is studied as a function of number of particles and strength of phoretic interaction. The mean square displacement shows distinct plateaus indicating cage breaking dynamics.