Results 51 to 60 of about 4,695,040 (225)
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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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
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Active nematic defects in compressible and incompressible flows. [PDF]
Physical Review E, 2022 We study the dynamics of active nematic films on a substrate driven by active flows with or without the incompressible constraint. Through simulations and theoretical analysis, we show that arch patterns are stable in the compressible case, while they ...
Supavit Pokawanvit +5 more
semanticscholar +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 order in active nematics on a curved surface
New Journal of Physics, 2020 We investigate the effects of extrinsic curvature on the turbulent behavior of a 2D active nematic confined to the surface of a cylinder. The surface of a cylinder has no intrinsic curvature and only extrinsic curvature.
D J G Pearce
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Active nematic ratchet in asymmetric obstacle arrays. [PDF]
Physical Review EWe numerically investigate the effect of an asymmetric periodic obstacle array in a two-dimensional active nematic. We find that activity in conjunction with the asymmetry leads to a ratchet effect or unidirectional flow of the fluid along the asymmetry ...
C. Schimming +2 more
semanticscholar +1 more source
Cell Sorting in an Active Nematic Vertex Model. [PDF]
Physical Review LettersWe study a mixture of extensile and contractile cells using a vertex model extended to include active nematic stresses. The two cell populations phase separate over time.
Jan Rozman, 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
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Active nematic–isotropic interfaces in channels [PDF]
Soft Matter, 2019 The hydrodynamic behavior of the interface between nematic (N) and isotropic (I) phases of a confined active liquid crystal is investigated using numerical simulations.
Rodrigo C. V. Coelho +2 more
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Analytical model for the motion and interaction of two-dimensional active nematic defects. [PDF]
Soft MatterWe develop an approximate, analytical model for the velocity of defects in active nematics by combining recent results for the velocity of topological defects in nematic liquid crystals with the flow field generated from individual defects in active ...
C. Schimming +2 more
semanticscholar +1 more source