Shearing active gels close to the isotropic-nematic transition.

We study numerically the rheological properties of a slab of active gel close to the isotropic-nematic transition. The flow behavior shows a strong dependence on the sample size, boundary conditions, and on the bulk constitutive curve, which, on entering the nematic phase, acquires an activity-induc...

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Príomhchruthaitheoirí: Cates, M, Fielding, S, Marenduzzo, D, Orlandini, E, Yeomans, J
Formáid: Journal article
Teanga:English
Foilsithe / Cruthaithe: 2008
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author Cates, M
Fielding, S
Marenduzzo, D
Orlandini, E
Yeomans, J
author_facet Cates, M
Fielding, S
Marenduzzo, D
Orlandini, E
Yeomans, J
author_sort Cates, M
collection OXFORD
description We study numerically the rheological properties of a slab of active gel close to the isotropic-nematic transition. The flow behavior shows a strong dependence on the sample size, boundary conditions, and on the bulk constitutive curve, which, on entering the nematic phase, acquires an activity-induced discontinuity at the origin. The precursor of this within the metastable isotropic phase for contractile systems (e.g., actomyosin gels) gives a viscosity divergence; its counterpart for extensile suspensions admits instead a shear-banded flow with zero apparent viscosity.
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spelling oxford-uuid:5dbc79ad-3622-42e1-8385-5daf28561c842022-03-26T17:36:11ZShearing active gels close to the isotropic-nematic transition.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5dbc79ad-3622-42e1-8385-5daf28561c84EnglishSymplectic Elements at Oxford2008Cates, MFielding, SMarenduzzo, DOrlandini, EYeomans, JWe study numerically the rheological properties of a slab of active gel close to the isotropic-nematic transition. The flow behavior shows a strong dependence on the sample size, boundary conditions, and on the bulk constitutive curve, which, on entering the nematic phase, acquires an activity-induced discontinuity at the origin. The precursor of this within the metastable isotropic phase for contractile systems (e.g., actomyosin gels) gives a viscosity divergence; its counterpart for extensile suspensions admits instead a shear-banded flow with zero apparent viscosity.
spellingShingle Cates, M
Fielding, S
Marenduzzo, D
Orlandini, E
Yeomans, J
Shearing active gels close to the isotropic-nematic transition.
title Shearing active gels close to the isotropic-nematic transition.
title_full Shearing active gels close to the isotropic-nematic transition.
title_fullStr Shearing active gels close to the isotropic-nematic transition.
title_full_unstemmed Shearing active gels close to the isotropic-nematic transition.
title_short Shearing active gels close to the isotropic-nematic transition.
title_sort shearing active gels close to the isotropic nematic transition
work_keys_str_mv AT catesm shearingactivegelsclosetotheisotropicnematictransition
AT fieldings shearingactivegelsclosetotheisotropicnematictransition
AT marenduzzod shearingactivegelsclosetotheisotropicnematictransition
AT orlandinie shearingactivegelsclosetotheisotropicnematictransition
AT yeomansj shearingactivegelsclosetotheisotropicnematictransition