Dresden 2020 – scientific programme
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BP: Fachverband Biologische Physik
BP 8: Poster I
BP 8.11: Poster
Monday, March 16, 2020, 17:30–19:30, P2/1OG
Shape-instabilities in Chemically Active Multi-momponent Mixtures — •Jonathan Bauermann1 and Frank Jülicher1,2 — 1Max Planck Institute for the Physics of Complex Systems, Dresden, Germany — 2Center for Systems Biology Dresden, Dresden, Germany
Recently, it has been shown that droplets can undergo splitting events in chemically active environments (Zwicker et al., Nature Physics, 2017). The authors studied the dynamics of a binary mixture in the Cahn-Hilliard theory with an additional effective flux coming from the underlying chemical reactions. Only if the system is driven out of equilibrium, a stable droplet radius can exist. We generalize this model to more components and make the breaking of detailed balance explicit in the chemical reactions by introducing an additional energy supply. This drives the system out of equilibrium and stable droplet radii can be found. If the external energy supply is strong enough, similar shape-instabilities of the spherical droplets can be found as described by the authors in the aforementioned paper. A framework like this allows not only for more complicated reaction schemes, but also gives insights into the energetics of chemical reactions in phase-separating systems.