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http://hdl.handle.net/2445/142058
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DC Field | Value | Language |
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dc.contributor.author | Martínez Prat, Berta | - |
dc.contributor.author | Ignés i Mullol, Jordi | - |
dc.contributor.author | Casademunt i Viader, Jaume | - |
dc.contributor.author | Sagués i Mestre, Francesc | - |
dc.date.accessioned | 2019-10-10T08:24:00Z | - |
dc.date.available | 2019-10-10T08:24:00Z | - |
dc.date.issued | 2019-02-04 | - |
dc.identifier.issn | 1745-2473 | - |
dc.identifier.uri | http://hdl.handle.net/2445/142058 | - |
dc.description.abstract | Active turbulence describes a flow regime that is erratic, and yet endowed with a characteristic length scale. It arises in animate soft-matter systems as diverse as bacterial baths , cell tissues and reconstituted cytoskeletal preparations. However, the way that these turbulent dynamics emerge in active systems has so far evaded experimental scrutiny. Here we unveil a direct route to active nematic turbulence by demonstrating that, for radially aligned unconfined textures, the characteristic length scale emerges at the early stages of the instability. We resolve two-dimensional distortions of a microtubule-based extensile system in space and time, and show that they can be characterized in terms of a growth rate that exhibits quadratic dependence on a dominant wavenumber. This wavelength selection mechanism is justified on the basis of a continuum model for an active nematic including viscous coupling to the adjacent fluid phase. Our findings are in line with the classical pattern-formation studies in non-active systems, bettering our understanding of the principles of active self-organization, and providing potential perspectives for the control of biological fluids. | - |
dc.format.extent | 5 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Nature Publishing Group | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1038/s41567-018-0411-6 | - |
dc.relation.ispartof | Nature Physics, 2019, vol. 15, p. 362-366 | - |
dc.relation.uri | https://doi.org/10.1038/s41567-018-0411-6 | - |
dc.rights | (c) Martínez Prat, Berta et al., 2019 | - |
dc.source | Articles publicats en revistes (Ciència dels Materials i Química Física) | - |
dc.subject.classification | Turbulència | - |
dc.subject.classification | Dinàmica de fluids | - |
dc.subject.classification | Cristalls líquids nemàtics | - |
dc.subject.other | Turbulence | - |
dc.subject.other | Fluid dynamics | - |
dc.subject.other | Nematic liquid crystals | - |
dc.title | Selection mechanism at the onset of active turbulence | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 686803 | - |
dc.date.updated | 2019-10-10T08:24:01Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) |
Files in This Item:
File | Description | Size | Format | |
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686803.pdf | 1.21 MB | Adobe PDF | View/Open |
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