Results 191 to 200 of about 4,695,040 (225)
Proceedings of the National Academy of SciencesMicrofluidics involves the manipulation of flows at the microscale, typically requiring external power sources to generate pressure gradients. Alternatively, harnessing flows from active fluids, which are usually chaotic, has been proposed as a paradigm ...
Ignasi V'elez-Ceron +6 more
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Light-activated microtubule-based two-dimensional active nematic.
Soft Matter, 2023We assess the ability of two light responsive kinesin motor clusters to drive dynamics of microtubule-based active nematics: opto-K401, a processive motor, and opto-K365, a non-processive motor.
Zahra Zarei +6 more
semanticscholar +3 more sources
First Order Alignment Transition in an Interfaced Active Nematic Fluid.
Physical Review Letters, 2023We investigate experimentally the dynamic phase transition of a two-dimensional active nematic layer interfaced with a passive liquid crystal. Under a temperature ramp that leads to the transition of the passive liquid into a highly anisotropic lamellar ...
O. Bantysh +5 more
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Active nematic liquid crystals simulated by particle-based mesoscopic methods.
Soft Matter, 2023Two Multi-particle collision dynamics algorithms that simulate nematic liquid crystals are generalised to reproduce active behaviour. One of the algorithms is due to Shendruk and Yeomans and is based on particles that carry an orientation vector ordered ...
Jesús Macías-Durán +2 more
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Active nematic fluids on Riemannian two-manifolds
Proceedings of the Royal Society ARecent advances in cell biology and experimental techniques using reconstituted cell extracts have generated significant interest in understanding how geometry and topology influence active fluid dynamics.
Cuncheng Zhu +2 more
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Mechanochemical topological defects in an active nematic.
Physical Review E, 2022We propose a reaction-diffusion system that converts topological information of an active nematic into chemical signals. We show that a curvature-activated reaction dipole is sufficient for creating a system that dynamically senses topology by producing ...
M. Norton, P. Grover
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Tailoring interactions between active nematic defects with reinforcement learning.
Soft MatterActive nematics are paradigmatic active matter systems which generate micron-scale patterns and flows. Recent advances in optical control over molecular motors now allow experimenters to control the non-equilibrium activity field in space and time and ...
Carlos Floyd +2 more
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Chevron patterns in an active nematic liquid crystal film in contact with smectic A
Proceedings of the Royal Society AWe study a new mechanism of active matter confinement of a thin, active nematic sample consisting of microtubules, activated by adenosine triphosphate (ATP), placed between a slab of passive liquid crystal, the compound 8CB and water.
M. Calderer +5 more
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Journal of Fluid Mechanics, 2023
Coupling surface deformations with active stresses in two-dimensional nematic liquid crystal films leads to a rich area of investigation, particularly in biological fluid mechanics across multiple scales from tissue mechanics to cell membrane mechanics. In Al-Izzi & Morris (J. Fluid Mech., vol. 957, 2023, A4), the authors derive the complete set of
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Coupling surface deformations with active stresses in two-dimensional nematic liquid crystal films leads to a rich area of investigation, particularly in biological fluid mechanics across multiple scales from tissue mechanics to cell membrane mechanics. In Al-Izzi & Morris (J. Fluid Mech., vol. 957, 2023, A4), the authors derive the complete set of
openaire +2 more sources
Biological Tissues as Active Nematic Liquid Crystals
Advances in Materials, 2018Live tissues can self‐organize and be described as active materials composed of cells that generate active stresses through continuous injection of energy.
T. B. Saw, W. Xi, B. Ladoux, C. Lim
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