Results 41 to 50 of about 3,171,010 (214)
Defect dynamics in active nematics [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014 Topological defects are distinctive signatures of liquid crystals. They profoundly affect the viscoelastic behaviour of the fluid by constraining the orientational structure in a way that inevitably requires global changes not achievable with any set of local deformations.
Giomi, Luca +4 more
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Wrinkling Instability in 3D Active Nematics [PDF]
Nano Letters, 2020 In nature interactions between biopolymers and motor proteins give rise to biologically essential emergent behaviours. Besides cytoskeleton mechanics, active nematics arise from such interactions. Here we present a study on 3D active nematics made of microtubules, kinesin motors and depleting agent. It shows a rich behaviour evolving from a nematically
Tobias Strübing +5 more
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Colloids in two-dimensional active nematics: conformal cogs and controllable spontaneous rotation
New Journal of Physics, 2023 A major challenge in the study of active systems is to harness their non-equilibrium dynamics into useful work. We address this by showing how to design colloids with controllable spontaneous propulsion or rotation when immersed in active nematics.
Alexander J H Houston +1 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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Passive Janus particles are self-propelled in active nematics
New Journal of Physics, 2022 While active systems possess notable potential to form the foundation of new classes of autonomous materials (Zhang et al 2021 Nat. Rev. Mater. 6 437), designing systems that can extract functional work from active surroundings has proven challenging. In
Benjamin Loewe, Tyler N Shendruk
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Frontiers in Physics, 2021 One objective of active matter science is to unveil principles by which chaotic microscale dynamics could be transformed into useful work. A nematic liquid crystal environment offers a number of possibilities, one of which is a directional motion of an ...
Mojtaba Rajabi +7 more
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Bifurcation analysis of the twist-Freedericksz transition in a nematic liquid-crystal cell with pre-twist boundary conditions [PDF]
, 2009 Motivated by a recent investigation of Millar and McKay [Mol. Cryst. Liq. Cryst., 435, 277/[937]-286/[946] (2005)], we study the magnetic field twist-Fr´eedericksz transition for a nematic liquid crystal of positive diamagnetic anisotropy with strong ...
Grinfeld, Michael +3 more
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Active forces modulate collective behaviour and cellular organization
Comptes Rendus Biologies, 2021 Biological tissues are composed of various cell types working cooperatively to perform their respective function within organs and the whole body.
Balasubramaniam, Lakshmi +2 more
doaj +1 more source
Active turbulence in active nematics [PDF]
The European Physical Journal Special Topics, 2016 Dense, active systems show active turbulence, a state characterised by flow fields that are chaotic, with continually changing velocity jets and swirls. Here we review our current understanding of active turbulence. The development is primarily based on the theory and simulations of active liquid crystals, but with accompanying summaries of related ...
S.P. Thampi, J.M. Yeomans
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Defect Unbinding in Active Nematics
Physical Review Letters, 2018 15 pages (including SI), 4 figures.
Shankar, Suraj +3 more
openaire +5 more sources