Spontaneous flows and quantum analogies in heterogeneous active nematic films [PDF]
Communications PhysicsIncorporating the inherent heterogeneity of living systems into models of active nematics is essential to provide a more realistic description of biological processes such as bacterial growth, cell dynamics and tissue development.
Alexander J. H. Houston +1 more
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Submersed micropatterned structures control active nematic flow, topology, and concentration. [PDF]
Proc Natl Acad Sci U S A, 2021 Significance Methods to manipulate and control the dynamics of spontaneously flowing active materials are vital if these fluids are to lead to technological applications.
Thijssen K +7 more
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Chirality, anisotropic viscosity and elastic anisotropy in three-dimensional active nematic turbulence [PDF]
Communications PhysicsVarious active materials exhibit strong spatio-temporal variability of their orientational order known as active turbulence, characterised by irregular and chaotic motion of topological defects, including colloidal suspensions, biofilaments, and ...
Nika Kralj, Miha Ravnik, Žiga Kos
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Active nematic multipoles: Flow responses and the dynamics of defects and colloids [PDF]
Frontiers in Physics, 2023 We introduce a general description of localised distortions in active nematics using the framework of active nematic multipoles. We give the Stokesian flows for arbitrary multipoles in terms of differentiation of a fundamental flow response and describe ...
Alexander J. H. Houston +3 more
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Active nematic order and dynamic lane formation of microtubules driven by membrane-bound diffusing motors. [PDF]
Proc Natl Acad Sci U S A, 2021 Significance Active nematics are ordered liquid crystalline fluids that exhibit spontaneous persistent flows and collective dynamics. The development of motile biopolymer systems inspired by nature has recently attracted considerable attention to out-of ...
Memarian FL +8 more
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Do Active Nematic Self-Mixing Dynamics Help Growing Bacterial Colonies to Maintain Local Genetic Diversity? [PDF]
Frontiers in Physics, 2022 Recent studies have shown that packings of cells, both eukaryotic cellular tissues and growing or swarming bacterial colonies, can often be understood as active nematic fluids.
Fabian Jan Schwarzendahl +3 more
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Flow around topological defects in active nematic films. [PDF]
Proc Math Phys Eng Sci, 2022 We study the active flow around isolated defects and the self-propulsion velocity of +1/2 defects in an active nematic film with both viscous dissipation (with viscosity η) and frictional damping Γ with a substrate.
Rønning J +3 more
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Dynamic structure of active nematic shells [PDF]
Nature Communications, 2016 In active matter, chemical energy is transformed into mechanical motion; theoretical descriptions of nematic liquids are useful in understanding such phenomena. Here, Zhang et al.
Rui Zhang +3 more
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Active Fréedericksz Transition in Active Nematic Droplets
Physical Review XActive nematic liquid crystals have the remarkable ability to spontaneously deform and flow in the absence of any external driving force. While living materials with orientational order, such as the mitotic spindle, can self-assemble in quiescent active ...
Salman Alam +8 more
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Theory of active self-organization of dense nematic structures in the actin cytoskeleton [PDF]
eLifeThe actin cytoskeleton is remarkably adaptable and multifunctional. It often organizes into nematic bundles such as contractile rings or stress fibers. However, how a uniform and isotropic actin gel self-organizes into dense nematic bundles is not fully ...
Waleed Mirza +5 more
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