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Pattern formation in active fluids

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Bois,  Justin
Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society;

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Grill,  Stephan W.
Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society;

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Citation

Bois, J., Jülicher, F., & Grill, S. W. (2011). Pattern formation in active fluids. Physical Review Letters, 106(2): 028103.


Cite as: https://hdl.handle.net/21.11116/0000-0001-0A81-2
Abstract
We discuss pattern formation in active fluids in which active stress is regulated by diffusing molecular components. Nonhomogeneous active stress profiles create patterns of flow which transport stress regulators by advection. Our work is motivated by the dynamics of the actomyosin cell cortex in which biochemical pathways regulate active stress. We present a mechanism in which a single diffusing species up regulates active stress, resulting in steady flow and concentration patterns. We also discuss general pattern-formation behaviors of reaction-diffusion systems placed in active fluids.