Dynamical heterogeneities close to a colloidal gel

Puertas, Antonio M.; Fuchs, Matthias; Cates, Michael E.

Dynamical heterogeneities close to a colloidal gel

Files

Dynamical_Heterogeneities_2.pdf(846.76 KB)

Date

2004

Authors

Puertas, Antonio M.

Fuchs, Matthias

Cates, Michael E.

Publication type

Journal article

Published in

The Journal of Chemical Physics ; 121 (2004), 6. - pp. 2813-2822

Abstract

Dynamical heterogeneities in a colloidal fluid close to gelation are studied by means of computer simulations. A clear distinction between some fast particles and the rest, slow ones, is observed yielding a picture of the gel composed of two populations with different mobilities. Analyzing the statics and dynamics of both sets of particles, it is shown that the slow particles form a network of stuck particles, whereas the fast ones are able to move over long distances. Correlation functions show that the environment of the fast particles relaxes much faster than that of the slow ones, but at short times the bonds between fast particles are longer lived due to the flexibility of their structure. No stringlike motion is observed for the fast particles, but they occupy preferential sites in the surface of the structure formed by the slow ones.

Subject (DDC)

530 Physics

Cite This

ISO 690

PUERTAS, Antonio M., Matthias FUCHS, Michael E. CATES, 2004. Dynamical heterogeneities close to a colloidal gel. In: The Journal of Chemical Physics. 121(6), pp. 2813-2822. Available under: doi: 10.1063/1.1768936

BibTex

@article{Puertas2004Dynam-9346,
  year={2004},
  doi={10.1063/1.1768936},
  title={Dynamical heterogeneities close to a colloidal gel},
  number={6},
  volume={121},
  journal={The Journal of Chemical Physics},
  pages={2813--2822},
  author={Puertas, Antonio M. and Fuchs, Matthias and Cates, Michael E.}
}

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#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/9346">
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:language>eng</dc:language>
    <dcterms:abstract xml:lang="eng">Dynamical heterogeneities in a colloidal fluid close to gelation are studied by means of computer simulations. A clear distinction between some fast particles and the rest, slow ones, is observed yielding a picture of the gel composed of two populations with different mobilities. Analyzing the statics and dynamics of both sets of particles, it is shown that the slow particles form a network of stuck particles, whereas the fast ones are able to move over long distances. Correlation functions show that the environment of the fast particles relaxes much faster than that of the slow ones, but at short times the bonds between fast particles are longer lived due to the flexibility of their structure. No stringlike motion is observed for the fast particles, but they occupy preferential sites in the surface of the structure formed by the slow ones.</dcterms:abstract>
    <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by-nc-nd/2.0/"/>
    <dcterms:title>Dynamical heterogeneities close to a colloidal gel</dcterms:title>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:contributor>Puertas, Antonio M.</dc:contributor>
    <dcterms:bibliographicCitation>First publ. in: The Journal of Chemical Physics 121 (2004), 6, pp. 2813 2822</dcterms:bibliographicCitation>
    <dc:format>application/pdf</dc:format>
    <dc:contributor>Fuchs, Matthias</dc:contributor>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:55:43Z</dcterms:available>
    <dc:contributor>Cates, Michael E.</dc:contributor>
    <dcterms:issued>2004</dcterms:issued>
    <dc:creator>Fuchs, Matthias</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:55:43Z</dc:date>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:rights>Attribution-NonCommercial-NoDerivs 2.0 Generic</dc:rights>
    <dc:creator>Puertas, Antonio M.</dc:creator>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/9346"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/9346/1/Dynamical_Heterogeneities_2.pdf"/>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/9346/1/Dynamical_Heterogeneities_2.pdf"/>
    <dc:creator>Cates, Michael E.</dc:creator>
  </rdf:Description>
</rdf:RDF>

Bibliography of Konstanz

Yes