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Formation of liquid shells in active droplet systems

MPS-Authors
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Bauermann,  Jonathan
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Bartolucci,  Giacomo
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Jülicher,  Frank
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Bauermann, J., Bartolucci, G., Boekhoven, J., Weber, C. A., & Jülicher, F. (2024). Formation of liquid shells in active droplet systems. Physical Review Research, 5(4): 043246. doi:10.1103/PhysRevResearch.5.043246.


Cite as: https://hdl.handle.net/21.11116/0000-0010-6610-9
Abstract
We study a chemically active binary mixture undergoing phase separation and show that under nonequilibrium conditions, stable liquid spherical shells can form via a spinodal instability in the droplet center. A single liquid shell tends to grow until it undergoes a shape instability beyond a critical size. In an active emulsion, many stable and stationary liquid shells can coexist. We discuss conditions under which liquid shells are stable and dominant as compared to regimes where droplets undergo shape instabilities and divide.