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dc.contributor.author
Yaman, Yusuf I.
dc.contributor.author
Demir, Esin
dc.contributor.author
Vetter, Roman
dc.contributor.author
Kocabas, Askin
dc.date.accessioned
2019-06-07T06:21:28Z
dc.date.available
2019-06-07T03:01:48Z
dc.date.available
2019-06-07T06:21:28Z
dc.date.issued
2019-05-23
dc.identifier.other
10.1038/s41467-019-10311-z
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/346142
dc.identifier.doi
10.3929/ethz-b-000346142
dc.description.abstract
Growing tissue and bacterial colonies are active matter systems where cell divisions and cellular motion generate active stress. Although they operate in the non-equilibrium regime, these biological systems can form large-scale ordered structures. How mechanical instabilities drive the dynamics of active matter systems and form ordered structures are not well understood. Here, we use chaining Bacillus subtilis, also known as a biofilm, to study the relation between mechanical instabilities and nematic ordering. We find that bacterial biofilms have intrinsic length scales above which a series of mechanical instabilities occur. Localized stress and friction drive buckling and edge instabilities which further create nematically aligned structures and topological defects. We also observe that topological defects control stress distribution and initiate the formation of sporulation sites by creating three-dimensional structures. In this study we propose an alternative active matter platform to study the essential roles of mechanics in growing biological tissue.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Nature Publishing Group
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Emergence of active nematics in chaining bacterial biofilms
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Nature Communications
ethz.journal.volume
10
en_US
ethz.pages.start
2285
en_US
ethz.size
9 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2019-06-07T03:01:51Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-06-07T06:21:40Z
ethz.rosetta.lastUpdated
2019-06-07T06:21:40Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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