Dresden 2020 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 2: Active Matter I (joint session BP/CPP/DY)

DY 2.11: Talk

Monday, March 16, 2020, 12:45–13:00, HÜL 386

Simulations of an active surface immersed in viscous fluids — •Lucas D. Wittwer and Sebastian Aland — Faculty of Informatics / Mathematics, University of Applied Science Dresden, Germany

Mechanochemical processes play a crucial role during morphogenesis, the formation of complex shapes and tissues out of a single cell. On the cellular level, the actomyosin cortex governs shape and shape changes. This thin layer of active material underneath the cell surface exerts an active contractile tension, the strength of which being controlled by the concentration of force-generating molecules. Advective transport of such molecules leads to a complex interplay of hydrodynamics and molecule concentration which gives rise to pattern formation and self-organized shape dynamics.

In this talk, we present a novel numerical model to simulate an active surface immersed in viscous fluids. We show the resulting patterning and cell shape dynamics for different parameter configurations as well as the flow profiles in the surrounding fluids and compare it to results from other models.