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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| Veröffentlicht in: | Physical review letters 2008-08, Vol.101 (6), p.068102-068102, Article 068102 |
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| container_end_page | 068102 |
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| container_issue | 6 |
| container_start_page | 068102 |
| container_title | Physical review letters |
| container_volume | 101 |
| creator | Cates, M E Fielding, S M Marenduzzo, D Orlandini, E Yeomans, J M |
| 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. |
| doi_str_mv | 10.1103/physrevlett.101.068102 |
| format | Article |
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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. 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| ispartof | Physical review letters, 2008-08, Vol.101 (6), p.068102-068102, Article 068102 |
| issn | 0031-9007 1079-7114 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_69508712 |
| source | MEDLINE; American Physical Society Journals |
| subjects | Algorithms Gels - chemistry Models, Chemical Nonlinear Dynamics Rheology - methods Viscosity |
| title | Shearing active gels close to the isotropic-nematic transition |
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