Berlin 2018 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 67: Poster: Active Matter, Microswimmers

DY 67.1: Poster

Donnerstag, 15. März 2018, 15:30–18:00, Poster A

Topology of active nematics and dimensionality — •Joscha Tabet and Marco G. Mazza — Max-Planck-Institut für Dynamik und Selbstorganisation, Göttingen, Germany

The complex interplay of topology, viscous dissipation, and active motion leads to stunning nonequilibrium behavior in active nematic fluids. We study the effect dimensionality has on these dynamics. Thus far, the research in this area has mostly been limited to different 2D-topologies. By employing a novel model for nematodynamics based on the stochastic rotation dynamics framework we extend this point of view to quasi-2D and full 3D simulations. Our bottom-up approach reproduces the hydrodynamic equations in a computationally efficient way while maintaining statistical fluctuations. We analyze the topology of active nematics and its coupling with the fluid motion. This method opens up new ways to understanding the dynamics of actin filaments in the cell and the cytoskeleton.