期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.068102
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资金
- EPSRC [EP/E5336X/1]
- Royal Society
- EPSRC [EP/E05336X/1, EP/E030173/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E05336X/1, EP/E030173/1] Funding Source: researchfish
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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