Probability densities of a forced probe particle in glass : results from mode coupling theory and simulations of active microrheology
Dateien
Datum
Autor:innen
Herausgeber:innen
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
DOI (zitierfähiger Link)
Internationale Patentnummer
Link zur Lizenz
EU-Projektnummer
DFG-Projektnummer
Projekt
Open Access-Veröffentlichung
Sammlungen
Titel in einer weiteren Sprache
Publikationstyp
Publikationsstatus
unikn.publication.listelement.citation.prefix.version.undefined
Zusammenfassung
We investigate the displacements of a probe particle inside a glass, when a strong external force is applied to the probe (active nonlinear microrheology). Calculations within mode coupling theory are presented for glasses of hard spheres and compared to Langevin and Brownian dynamics simulations. Under not too strong forces where the probe remains trapped, the probe density distribution becomes anisotropic. It is shifted towards the direction of the force, develops an enhanced tail in that direction (signalled by a positive skewness), and exhibits different variances along and perpendicular to the force direction. A simple model of an harmonically trapped probe rationalizes the low force limit, with strong strain softening setting in at forces of the order of a few thermal energies per particle radius.
Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
Schlagwörter
Konferenz
Rezension
Zitieren
ISO 690
HARR, Christian, Antonio M. PUERTAS, Thomas VOIGTMANN, Matthias FUCHS, 2012. Probability densities of a forced probe particle in glass : results from mode coupling theory and simulations of active microrheology. In: Zeitschrift für Physikalische Chemie. 2012, 226(7-8), pp. 779-795. ISSN 0942-9352. Available under: doi: 10.1524/zpch.2012.0275BibTex
@article{Harr2012Proba-22713, year={2012}, doi={10.1524/zpch.2012.0275}, title={Probability densities of a forced probe particle in glass : results from mode coupling theory and simulations of active microrheology}, number={7-8}, volume={226}, issn={0942-9352}, journal={Zeitschrift für Physikalische Chemie}, pages={779--795}, author={Harr, Christian and Puertas, Antonio M. and Voigtmann, Thomas and Fuchs, Matthias} }
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/123456789/22713"> <dcterms:abstract xml:lang="eng">We investigate the displacements of a probe particle inside a glass, when a strong external force is applied to the probe (active nonlinear microrheology). Calculations within mode coupling theory are presented for glasses of hard spheres and compared to Langevin and Brownian dynamics simulations. Under not too strong forces where the probe remains trapped, the probe density distribution becomes anisotropic. It is shifted towards the direction of the force, develops an enhanced tail in that direction (signalled by a positive skewness), and exhibits different variances along and perpendicular to the force direction. A simple model of an harmonically trapped probe rationalizes the low force limit, with strong strain softening setting in at forces of the order of a few thermal energies per particle radius.</dcterms:abstract> <dcterms:title>Probability densities of a forced probe particle in glass : results from mode coupling theory and simulations of active microrheology</dcterms:title> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-05-10T12:25:23Z</dcterms:available> <dc:contributor>Voigtmann, Thomas</dc:contributor> <dc:contributor>Fuchs, Matthias</dc:contributor> <dc:creator>Harr, Christian</dc:creator> <dc:contributor>Puertas, Antonio M.</dc:contributor> <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/> <dc:contributor>Harr, Christian</dc:contributor> <dcterms:bibliographicCitation>Zeitschrift für Physikalische Chemie ; 226 (2012), 7-8. - S. 779-795</dcterms:bibliographicCitation> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-05-10T12:25:23Z</dc:date> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/22713/2/Harrer_227136.pdf"/> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/22713/2/Harrer_227136.pdf"/> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/> <dcterms:issued>2012</dcterms:issued> <dc:language>eng</dc:language> <dc:rights>terms-of-use</dc:rights> <dc:creator>Fuchs, Matthias</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/22713"/> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/52"/> <dc:creator>Voigtmann, Thomas</dc:creator> <dc:creator>Puertas, Antonio M.</dc:creator> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/52"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <foaf:homepage rdf:resource="http://localhost:8080/"/> </rdf:Description> </rdf:RDF>