## Recoil experiments determine the eigenmodes of viscoelastic fluids

2022
Journal article
Published
##### Published in
New Journal of Physics ; 24 (2022). - 123013. - Institute of Physics Publishing (IOP). - eISSN 1367-2630
##### Abstract
We experimentally investigate the transient recoil dynamics of a colloidal probe particle in a viscoelastic fluid after the driving force acting on the probe is suddenly removed. The corresponding recoil displays two distinct timescales which are in excellent agreement with a microscopic model which considers the probe particle to be coupled to two bath particles via harmonic springs. Notably, this model exhibits two sets of eigenmodes which correspond to reciprocal and non-reciprocal force conditions and which can be experimentally confirmed in our experiments. We expect our findings to be relevant under conditions where particles are exposed to non-steady shear forces as this is encountered e.g. in microfluidic sorting devices or the intermittent motion of motile bacteria within their natural viscoelastic surrounding.
530 Physics
##### Cite This
ISO 690GINOT, Félix, Juliana CASPERS, Luis-Frieder REINALTER, Karthika KRISHNA KUMAR, Matthias KRÜGER, Clemens BECHINGER, 2022. Recoil experiments determine the eigenmodes of viscoelastic fluids. In: New Journal of Physics. Institute of Physics Publishing (IOP). 24, 123013. eISSN 1367-2630. Available under: doi: 10.1088/1367-2630/aca8c7
BibTex
@article{Ginot2022Recoi-59783,
year={2022},
doi={10.1088/1367-2630/aca8c7},
title={Recoil experiments determine the eigenmodes of viscoelastic fluids},
volume={24},
journal={New Journal of Physics},
author={Ginot, Félix and Caspers, Juliana and Reinalter, Luis-Frieder and Krishna Kumar, Karthika and Krüger, Matthias and Bechinger, Clemens},
note={This project was funded by the Deutsche Forschungsgemeinschaft (DFG), Grant No. SFB 1432—Project ID 425217212 Article Number: 123013}
}

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#" >
<bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/59783"/>
<dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
<dc:creator>Ginot, Félix</dc:creator>
<dc:creator>Krüger, Matthias</dc:creator>
<void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
<dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
<dc:contributor>Reinalter, Luis-Frieder</dc:contributor>
<dc:contributor>Ginot, Félix</dc:contributor>
<dc:contributor>Krishna Kumar, Karthika</dc:contributor>
<dc:contributor>Caspers, Juliana</dc:contributor>
<dc:creator>Reinalter, Luis-Frieder</dc:creator>
<dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
<dc:contributor>Bechinger, Clemens</dc:contributor>
<dc:creator>Krishna Kumar, Karthika</dc:creator>
<dc:creator>Caspers, Juliana</dc:creator>
<dcterms:title>Recoil experiments determine the eigenmodes of viscoelastic fluids</dcterms:title>
<dcterms:issued>2022</dcterms:issued>
<dc:creator>Bechinger, Clemens</dc:creator>
<dc:language>eng</dc:language>
<dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2023-01-18T12:38:17Z</dcterms:available>
<foaf:homepage rdf:resource="http://localhost:8080/"/>
<dc:contributor>Krüger, Matthias</dc:contributor>
<dc:rights>terms-of-use</dc:rights>
<dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2023-01-18T12:38:17Z</dc:date>
<dcterms:abstract xml:lang="eng">We experimentally investigate the transient recoil dynamics of a colloidal probe particle in a viscoelastic fluid after the driving force acting on the probe is suddenly removed. The corresponding recoil displays two distinct timescales which are in excellent agreement with a microscopic model which considers the probe particle to be coupled to two bath particles via harmonic springs. Notably, this model exhibits two sets of eigenmodes which correspond to reciprocal and non-reciprocal force conditions and which can be experimentally confirmed in our experiments. We expect our findings to be relevant under conditions where particles are exposed to non-steady shear forces as this is encountered e.g. in microfluidic sorting devices or the intermittent motion of motile bacteria within their natural viscoelastic surrounding.</dcterms:abstract>
<dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/59783/1/Ginot_2-4pyrdlqhzmen4.pdf"/>
<dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/59783/1/Ginot_2-4pyrdlqhzmen4.pdf"/>
</rdf:Description>
</rdf:RDF>

##### Comment on publication
This project was funded by the Deutsche Forschungsgemeinschaft (DFG), Grant No. SFB 1432—Project ID 425217212
Yes
Yes