title: Pattern formation in active fluids.
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.
authors.affiliation: Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, D-01187 Dresden, Germany.
authors.forename: Justin S
authors.initials: JS
authors.lastname: Bois
authors.forename: Frank
authors.initials: F
authors.lastname: Jülicher
authors.forename: Stephan W
authors.initials: SW
authors.lastname: Grill
mesh_terms: D000818:Animals; D003198:Computer Simulation; D003599:Cytoskeleton / Q000502:physiology*; D006801:Humans; D040542:Mechanotransduction, Cellular / Q000502:physiology*; D008954:Models, Biological; D009024:Morphogenesis / Q000502:physiology*; D013314:Stress, Mechanical