## Dynamics of self-propelled Janus particles in viscoelastic fluids

2016
##### Authors
Gomez-Solano, Juan Ruben
Blokhuis, Alex
Journal article
Published
##### Published in
Physical Review Letters ; 116 (2016), 13. - 138301. - ISSN 0031-9007. - eISSN 1079-7114
##### Abstract
We experimentally investigate active motion of spherical Janus colloidal particles in a viscoelastic fluid. Self-propulsion is achieved by a local concentration gradient of a critical polymer mixture which is imposed by laser illumination. Even in the regime where the fluid's viscosity is independent from the deformation rate induced by the particle, we find a remarkable increase of up to two orders of magnitude of the rotational diffusion with increasing particle velocity, which can be phenomenologically described by an effective rotational diffusion coefficient dependent on the Weissenberg number. We show that this effect gives rise to a highly anisotropic response of microswimmers in viscoelastic media to external forces depending on its orientation.
530 Physics
##### Cite This
ISO 690GOMEZ-SOLANO, Juan Ruben, Alex BLOKHUIS, Clemens BECHINGER, 2016. Dynamics of self-propelled Janus particles in viscoelastic fluids. In: Physical Review Letters. 116(13), 138301. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.116.138301
BibTex
@article{GomezSolano2016-02-25T09:21:17ZDynam-39246,
year={2016},
doi={10.1103/PhysRevLett.116.138301},
title={Dynamics of self-propelled Janus particles in viscoelastic fluids},
number={13},
volume={116},
issn={0031-9007},
journal={Physical Review Letters},
author={Gomez-Solano, Juan Ruben and Blokhuis, Alex and Bechinger, Clemens},
note={Article Number: 138301}
}

RDF
<rdf:RDF
xmlns:dcterms="http://purl.org/dc/terms/"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:bibo="http://purl.org/ontology/bibo/"
xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
xmlns:foaf="http://xmlns.com/foaf/0.1/"
xmlns:void="http://rdfs.org/ns/void#"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#" >
<dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/39246/1/Gomez-Solano_0-410789.pdf"/>
<dc:contributor>Gomez-Solano, Juan Ruben</dc:contributor>
<dc:rights>terms-of-use</dc:rights>
<bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/39246"/>
<dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
<dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/39246/1/Gomez-Solano_0-410789.pdf"/>
<dc:language>eng</dc:language>
<dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
<dcterms:issued>2016-02-25T09:21:17Z</dcterms:issued>
<foaf:homepage rdf:resource="http://localhost:8080/"/>
<dc:creator>Bechinger, Clemens</dc:creator>
<dcterms:title>Dynamics of self-propelled Janus particles in viscoelastic fluids</dcterms:title>
<dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
<dc:contributor>Bechinger, Clemens</dc:contributor>
<dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-06-13T09:25:24Z</dc:date>
<void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
<dc:contributor>Blokhuis, Alex</dc:contributor>
<dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-06-13T09:25:24Z</dcterms:available>
<dc:creator>Gomez-Solano, Juan Ruben</dc:creator>
<dcterms:abstract xml:lang="eng">We experimentally investigate active motion of spherical Janus colloidal particles in a viscoelastic fluid. Self-propulsion is achieved by a local concentration gradient of a critical polymer mixture which is imposed by laser illumination. Even in the regime where the fluid's viscosity is independent from the deformation rate induced by the particle, we find a remarkable increase of up to two orders of magnitude of the rotational diffusion with increasing particle velocity, which can be phenomenologically described by an effective rotational diffusion coefficient dependent on the Weissenberg number. We show that this effect gives rise to a highly anisotropic response of microswimmers in viscoelastic media to external forces depending on its orientation.</dcterms:abstract>
<dc:creator>Blokhuis, Alex</dc:creator>
</rdf:Description>
</rdf:RDF>

No