Berlin 2018 – scientific programme
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BP: Fachverband Biologische Physik
BP 25: Active Matter DY III (joint session DY/CPP/BP)
BP 25.7: Talk
Wednesday, March 14, 2018, 17:15–17:30, BH-N 243
Self-spinning particles phase separate and move collectively — •Christian Scholz2,1, Michael Engel1, and Thorsten Pöschel1 — 1Institute for Multiscale Simulation, FAU Erlangen, Germany — 2Institut für Theoretische Physik 2, HHU Düsseldorf, Germany
We create 3d-printed minimalistic robots that perform self-spinning motion. Binary mixtures of clockwise and counter-clockwise spinning particles phase separate and exhibit collective ballistic motion along the interfaces. We compare our experimental system to Langevin simulations to demonstrate that our macroscopic system is a form of active soft matter. Simulations also allow us to demonstrate that confinement in the system, on long time scales, favors symmetric demixing patterns.