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BP: Fachverband Biologische Physik
BP 35: Active Matter V (joint session BP/DY)
BP 35.6: Talk
Friday, March 22, 2024, 10:45–11:00, H 1028
Sensitive shape dependence in agent-based simulations of growth — •Jonas Isensee1,2, Lukas Hupe1,2, Ramin Golestanian1,2,3, and Philip Bittihn1,2 — 1Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany — 2Institute for the Dynamics of Complex Systems, Faculty of Physics, University of Göttingen, Germany — 3Rudolf Peierls Centre for Theoretical Physics, University of Oxford, United Kingdom
We consider purely sterically interacting particles that grow and divide in two-dimensional confinement. Such models have been used to study cell dynamics in tissues and bacterial aggregates. A common feature in these is the rich emergent orientation dynamics due to anisotropic shapes, directed growth, and confinement. By introducing continuously tuneable tip variations around a common rod shape and characterizing the resulting orientation dynamics in space and time, we identify trends in the collective dynamics caused by certain shape features. In particular, we find a strong effect of small deviations from the traditional rod shape. Our results separate the effects of aspect ratio and particle shape, contribute to the characterization of the effective dynamics at large and intermediate length scales, and thereby also provide strategies for the design of future artificial systems.
Keywords: proliferating active matter; particle shape; orientational order; microdomains; agent-based modelling