Surface melting of a colloidal glass

Tian, Li; Bechinger, Clemens

Surface melting of a colloidal glass

Dateien

Zu diesem Dokument gibt es keine Dateien.

Datum

2022

Autor:innen

Tian, Li

Bechinger, Clemens

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Nature Communications. Nature Publishing Group. 2022, 13(1), 6605. eISSN 2041-1723. Available under: doi: 10.1038/s41467-022-34317-2

Zusammenfassung

Despite their technological relevance, a full microscopic understanding of glasses is still lacking. This applies even more to their surfaces whose properties largely differ from that of the bulk material. Here, we experimentally investigate the surface of a two-dimensional glass as a function of the effective temperature. To yield a free surface, we use an attractive colloidal suspension of micron-sized particles interacting via tunable critical Casimir forces. Similar to crystals, we observe surface melting of the glass, i.e., the formation of a liquid film at the surface well below the glass temperature. Underneath, however, we find an unexpected region with bulk density but much faster particle dynamics. It results from connected clusters of highly mobile particles which are formed near the surface and deeply percolate into the underlying material. Because its thickness can reach several tens of particle diameters, this layer may elucidate the poorly understood properties of thin glassy films which find use in many technical applications.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

TIAN, Li, Clemens BECHINGER, 2022. Surface melting of a colloidal glass. In: Nature Communications. Nature Publishing Group. 2022, 13(1), 6605. eISSN 2041-1723. Available under: doi: 10.1038/s41467-022-34317-2

BibTex

@article{Tian2022-11-03Surfa-59224,
  year={2022},
  doi={10.1038/s41467-022-34317-2},
  title={Surface melting of a colloidal glass},
  number={1},
  volume={13},
  journal={Nature Communications},
  author={Tian, Li and Bechinger, Clemens},
  note={Article Number: 6605}
}

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/123456789/59224">
    <dc:creator>Bechinger, Clemens</dc:creator>
    <dcterms:abstract xml:lang="eng">Despite their technological relevance, a full microscopic understanding of glasses is still lacking. This applies even more to their surfaces whose properties largely differ from that of the bulk material. Here, we experimentally investigate the surface of a two-dimensional glass as a function of the effective temperature. To yield a free surface, we use an attractive colloidal suspension of micron-sized particles interacting via tunable critical Casimir forces. Similar to crystals, we observe surface melting of the glass, i.e., the formation of a liquid film at the surface well below the glass temperature. Underneath, however, we find an unexpected region with bulk density but much faster particle dynamics. It results from connected clusters of highly mobile particles which are formed near the surface and deeply percolate into the underlying material. Because its thickness can reach several tens of particle diameters, this layer may elucidate the poorly understood properties of thin glassy films which find use in many technical applications.</dcterms:abstract>
    <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by/4.0/"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dcterms:issued>2022-11-03</dcterms:issued>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2022-11-21T16:17:28Z</dc:date>
    <dc:rights>Attribution 4.0 International</dc:rights>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/59224/1/Tian_2-z21b3fp26pgc0.pdf"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/59224/1/Tian_2-z21b3fp26pgc0.pdf"/>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/59224"/>
    <dc:contributor>Bechinger, Clemens</dc:contributor>
    <dc:creator>Tian, Li</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2022-11-21T16:17:28Z</dcterms:available>
    <dcterms:title>Surface melting of a colloidal glass</dcterms:title>
    <dc:contributor>Tian, Li</dc:contributor>
    <dc:language>eng</dc:language>
  </rdf:Description>
</rdf:RDF>

Universitätsbibliographie

Ja

Begutachtet

Ja