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dc.contributor.author
Dietrich, Kilian
dc.contributor.author
Renggli, Damian
dc.contributor.author
Zanini, Michele
dc.contributor.author
Volpe, Giovanni
dc.contributor.author
Buttinoni, Ivo
dc.contributor.author
Isa, Lucio
dc.date.accessioned
2017-10-04T12:15:14Z
dc.date.available
2017-09-14T08:21:39Z
dc.date.available
2017-09-15T15:54:32Z
dc.date.available
2017-10-04T12:15:14Z
dc.date.issued
2017
dc.identifier.other
10.1088/1367-2630/aa7126
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/184774
dc.identifier.doi
10.3929/ethz-b-000184774
dc.description.abstract
Colloidal particles equipped with platinum patches can establish chemical gradients in H O -enrichedsolutionsandundergoself-propulsionduetolocaldiffusiophoreticmigration.Inbulk 2 2 (3D), this class of active particles swim in the direction of the surface heterogeneities introduced by the patches and consequently reorient with the characteristic rotational diffusion time of the colloids. In this article, we present experimental and numerical evidence that planar 2D confinements defy this simple picture. Instead, the motion of active particles both on solid substrates and at flat liquid–liquid interfaces is captured by a 2D active Brownian motion model, in which rotational and translational motion are constrained in the xy-plane. This leads to an active motion that does not follow the direction of the surface heterogeneities and to timescales of reorientation that do not match the free rotational diffusion times. Furthermore, 2D-confinement at fluid–fluid interfaces gives rise to a unique distribution of swimming velocities: the patchy colloids uptake two main orientations leading to two particle populations with velocities that differ up to one order of magnitude. Our results shed new light on the behavior of active colloids in 2D, which is of interest for modeling and applications where confinements are present.
en_US
dc.language.iso
en
en_US
dc.publisher
Institute of Physics
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.subject
Colloids
en_US
dc.subject
Active matter
en_US
dc.subject
Liquid interfaces
en_US
dc.subject
Catalytic microswimmers
en_US
dc.subject
Self-propelled particles
en_US
dc.title
Two-dimensional nature of the active Brownian motion of catalytic microswimmers at solid and liquid interfaces
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2017-06-30
ethz.journal.title
New Journal of Physics
ethz.journal.volume
19
en_US
ethz.journal.issue
6
en_US
ethz.pages.start
065008
en_US
ethz.size
11 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Two-dimensional self-assembled materials at liquid interfaces: basics, shear and patches
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02160 - Departement Materialwissenschaft / Department of Materials::09455 - Isa, Lucio (SNF-Professur)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02160 - Departement Materialwissenschaft / Department of Materials::09455 - Isa, Lucio (SNF-Professur)
en_US
ethz.grant.agreementno
144646
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
SNF-Förderungsprofessuren Stufe 2
ethz.date.deposited
2017-09-14T08:21:40Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-09-15T15:54:35Z
ethz.rosetta.lastUpdated
2017-10-04T12:15:18Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Two-dimensional%20nature%20of%20the%20active%20Brownian%20motion%20of%20catalytic%20microswimmers%20at%20solid%20and%20liquid%20interfaces&rft.jtitle=New%20Journal%20of%20Physics&rft.date=2017&rft.volume=19&rft.issue=6&rft.spage=065008&rft.au=Dietrich,%20Kilian&Renggli,%20Damian&Zanini,%20Michele&Volpe,%20Giovanni&Buttinoni,%20Ivo&rft.genre=article&rft_id=info:doi/10.1088/1367-2630/aa7126
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