Active microfluidic transport in two-dimensional handlebodies

Unlike traditional nematic liquid crystals, which adopt ordered equilibrium configurations compatible with the topological constraints imposed by the boundaries, active nematics are intrinsically disordered because of their self- sustained internal flows. Controlling the flow patterns of active nema...

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Detalhes bibliográficos
Autores: Hardoüin, Jérôme, Laurent, Justine, Lopez-Leon, Teresa, Ignés i Mullol, Jordi, Sagués i Mestre, Francesc
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/172434
Acesso em linha:https://hdl.handle.net/2445/172434
Access Level:acceso abierto
Palavra-chave:Microfluídica
Cristalls líquids nemàtics
Microfluidics
Nematic liquid crystals
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spelling Active microfluidic transport in two-dimensional handlebodiesHardoüin, JérômeLaurent, JustineLopez-Leon, TeresaIgnés i Mullol, JordiSagués i Mestre, FrancescMicrofluídicaCristalls líquids nemàticsMicrofluidicsNematic liquid crystalsUnlike traditional nematic liquid crystals, which adopt ordered equilibrium configurations compatible with the topological constraints imposed by the boundaries, active nematics are intrinsically disordered because of their self- sustained internal flows. Controlling the flow patterns of active nematics remains a limiting step towards their use as functional materials. Here we show that confining a tubulin-kinesin active nematic to a network of connected annular microfluidic channels enables controlled directional flows and autonomous transport. In single annular channels, for narrow widths, the typically chaotic streams transform into well-defined circulating flows, whose direction or handedness can be controlled by introducing asymmetric corrugations on the channel walls. The dynamics is altered when two or three annular channels are interconnected. These more complex topologies lead to scenarios of synchronization, anti-correlation, and frustration of the active flows, and to the stabilisation of high topological singularities in both the flow field and the orientational field of the material. Controlling textures and flows in these microfluidic platforms opens unexplored perspectives towards their application in biotechnology and material science.Royal Society of Chemistry2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/172434Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1039/d0sm00610fSoft Matter, 2020, vol. 16, num. 40, p. 9230-9241https://doi.org/10.1039/d0sm00610finfo:eu-repo/grantAgreement/EC/H2020/674979(c) Hardoüin, Jérôme et al., 2020info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1724342026-05-27T06:46:51Z
dc.title.none.fl_str_mv Active microfluidic transport in two-dimensional handlebodies
title Active microfluidic transport in two-dimensional handlebodies
spellingShingle Active microfluidic transport in two-dimensional handlebodies
Hardoüin, Jérôme
Microfluídica
Cristalls líquids nemàtics
Microfluidics
Nematic liquid crystals
title_short Active microfluidic transport in two-dimensional handlebodies
title_full Active microfluidic transport in two-dimensional handlebodies
title_fullStr Active microfluidic transport in two-dimensional handlebodies
title_full_unstemmed Active microfluidic transport in two-dimensional handlebodies
title_sort Active microfluidic transport in two-dimensional handlebodies
dc.creator.none.fl_str_mv Hardoüin, Jérôme
Laurent, Justine
Lopez-Leon, Teresa
Ignés i Mullol, Jordi
Sagués i Mestre, Francesc
author Hardoüin, Jérôme
author_facet Hardoüin, Jérôme
Laurent, Justine
Lopez-Leon, Teresa
Ignés i Mullol, Jordi
Sagués i Mestre, Francesc
author_role author
author2 Laurent, Justine
Lopez-Leon, Teresa
Ignés i Mullol, Jordi
Sagués i Mestre, Francesc
author2_role author
author
author
author
dc.subject.none.fl_str_mv Microfluídica
Cristalls líquids nemàtics
Microfluidics
Nematic liquid crystals
topic Microfluídica
Cristalls líquids nemàtics
Microfluidics
Nematic liquid crystals
description Unlike traditional nematic liquid crystals, which adopt ordered equilibrium configurations compatible with the topological constraints imposed by the boundaries, active nematics are intrinsically disordered because of their self- sustained internal flows. Controlling the flow patterns of active nematics remains a limiting step towards their use as functional materials. Here we show that confining a tubulin-kinesin active nematic to a network of connected annular microfluidic channels enables controlled directional flows and autonomous transport. In single annular channels, for narrow widths, the typically chaotic streams transform into well-defined circulating flows, whose direction or handedness can be controlled by introducing asymmetric corrugations on the channel walls. The dynamics is altered when two or three annular channels are interconnected. These more complex topologies lead to scenarios of synchronization, anti-correlation, and frustration of the active flows, and to the stabilisation of high topological singularities in both the flow field and the orientational field of the material. Controlling textures and flows in these microfluidic platforms opens unexplored perspectives towards their application in biotechnology and material science.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/172434
url https://hdl.handle.net/2445/172434
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1039/d0sm00610f
Soft Matter, 2020, vol. 16, num. 40, p. 9230-9241
https://doi.org/10.1039/d0sm00610f
info:eu-repo/grantAgreement/EC/H2020/674979
dc.rights.none.fl_str_mv (c) Hardoüin, Jérôme et al., 2020
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Hardoüin, Jérôme et al., 2020
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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