Results 21 to 30 of about 12,892 (173)
Nature Communications, 2018 AbstractActive matter extracts energy from its surroundings at the single particle level and transforms it into mechanical work. Examples include cytoskeleton biopolymers and bacterial suspensions. Here, we review experimental, theoretical and numerical studies of active nematics - a type of active system that is characterised by self-driven units with
Doostmohammadi, A +3 more
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Active nematic emulsions [PDF]
Science Advances, 2018 Droplets of active fluid form a dynamically self-assembled material based on the cross-talk between active and passive defects.
Guillamat, Pau +5 more
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Mesoscopic simulations of active nematics
Science Advances, 2022 Coarse-grained, mesoscale simulations are invaluable for studying soft condensed matter because of their ability to model systems in which a background solvent plays a substantial role but is not the primary interest. Such methods generally model passive solvents; however, far-from-equilibrium systems may also be composed of complex solutes suspended ...
Kozhukhov, Timofey, Shendruk, Tyler N.
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Active nematics with quenched disorder [PDF]
Physical Review E, 2020 We introduce a two-dimensional active nematic with quenched disorder. We write the coarse-grained hydrodynamic equations of motion for slow variables, viz. density, and orientation. Disorder strength is tuned from zero to large values. Results from the numerical solution of equations of motion as well as the calculation of two-point orientation ...
Sameer Kumar, Shradha Mishra
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Machine learning forecasting of active nematics [PDF]
Soft Matter, 2021 Our model is unrolled to map an input orientation sequence (from time t-8 to t-1) to an output one (t,t + 1…) with trajectray tracing. Cyan labels are −1/2 defect while purple ones are +1/2.
Zhengyang Zhou +8 more
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Biphasic, Lyotropic, Active Nematics [PDF]
Physical Review Letters, 2014 7 pages, 8 ...
Matthew L. Blow +2 more
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Active nematics with deformable particles
Soft Matter, 2023 We extend theories of active nematics to incorporate cell shape changes. Sufficiently active systems display regions of active, elongated cells coexisting with regions of passive, circular cells.
Hadjifrangiskou, I +2 more
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Optimal Control of Active Nematics [PDF]
Physical Review Letters, 2020 In this work we present the first systematic framework to sculpt active nematics systems, using optimal control theory and a hydrodynamic model of active nematics. We demonstrate the use of two different control fields, (1) applied vorticity and (2) activity strength, to shape the dynamics of an extensile active nematic that is confined to a disk.
Michael M. Norton +3 more
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Helical flow states in active nematics [PDF]
Physical Review E, 2022 4 pages, 4 figures ...
Keogh, Ryan R. +6 more
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Nematic order condensation and topological defects in inertial active nematics [PDF]
Physical Review E, 2022 Living materials at different length scales manifest active nematic features such as orientational order, nematic topological defects, and active nematic turbulence. Using numerical simulations we investigate the impact of fluid inertia on the collective pattern formation in active nematics.
Saghatchi, Roozbeh +2 more
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