Results 71 to 80 of about 4,695,040 (225)
Active Nematics Are Intrinsically Phase Separated [PDF]
Physical Review Letters, 2006 Two-dimensional nonequilibrium nematic steady states, as found in agitated granular-rod monolayers or films of orientable amoeboid cells, were predicted [Europhys. Lett. {\bf 62} (2003) 196] to have giant number fluctuations, with standard deviation proportional to the mean.
Mishra, Shradha, Ramaswamy, Sriram
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Active morphogenesis of patterned epithelial shells
eLife, 2023 Shape transformations of epithelial tissues in three dimensions, which are crucial for embryonic development or in vitro organoid growth, can result from active forces generated within the cytoskeleton of the epithelial cells.
Diana Khoromskaia, Guillaume Salbreux
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Variational bounds and nonlinear stability of an active nematic suspension [PDF]
Journal of Fluid MechanicsWe use the entropy method to analyse the nonlinear dynamics and stability of a continuum kinetic model of an active nematic suspension. From the time evolution of the relative entropy, an energy-like quantity in the kinetic model, we derive a variational
Scott Weady
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GiantA surface in contact with the isotropic phase of a passive liquid crystal can induce nematic order over distances that range from microscopic to macroscopic when the nematic-isotropic interface undergoes an orientational-wetting transition.
Rodrigo C.V. Coelho +3 more
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Spontaneous topological charging of tactoids in a living nematic
New Journal of Physics, 2018 Living nematic is a realization of an active matter combining a nematic liquid crystal with swimming bacteria. The material exhibits a remarkable tendency towards spatio-temporal self-organization manifested in formation of dynamic textures of self ...
Mikhail M Genkin +2 more
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Dynamical subclasses of dry active nematics [PDF]
Physical Review E, 2019 5 pages, 4 figures.
Cai, Li-Bing +3 more
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Photonics, 2023 A chiral nematic is embedded between multilayer mirrors to obtain voltage-inducible polarized resonance spectra. Initially, the nematic director is uniformly oriented perpendicular to the mirrors’ surfaces because the chiral nematic helix is completely ...
Vladimir A. Gunyakov +4 more
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Maximally mixing active nematics
Physical Review EActive nematics are an important new paradigm in soft condensed matter systems. They consist of rod-like components with an internal driving force pushing them out of equilibrium. The resulting fluid motion exhibits chaotic advection, in which a small patch of fluid is stretched exponentially in length.
Kevin A. Mitchell +5 more
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Collective chemotaxis of active nematic droplets [PDF]
Physical Review E, 2020 Collective chemotaxis plays a key role in the navigation of cell clusters in, e.g., embryogenesis and cancer metastasis. Using the active nematic continuum equations, coupled to a chemical field that regulates activity, we demonstrate and explain a physical mechanism that results in collective chemotaxis.
Hughes, Rian, Yeomans, Julia M.
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Active nematic gels as active relaxing solids [PDF]
Physical Review E, 2017 I put forward a continuum theory for active nematic gels, defined as fluids or suspensions of orientable rodlike objects endowed with active dynamics, that is based on symmetry arguments and compatibility with thermodynamics. The starting point is our recent theory that models (passive) nematic liquid crystals as relaxing nematic elastomers.
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