Surface melting of a colloidal glass

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

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

<rdf:RDF xmlns:dcterms="" xmlns:dc="" xmlns:rdf="" xmlns:bibo="" xmlns:dspace="" xmlns:foaf="" xmlns:void="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dc:contributor>Bechinger, Clemens</dc:contributor> <dspace:isPartOfCollection rdf:resource=""/> <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> <dc:creator>Tian, Li</dc:creator> <dcterms:isPartOf rdf:resource=""/> <dcterms:rights rdf:resource=""/> <dspace:hasBitstream rdf:resource=""/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dcterms:hasPart rdf:resource=""/> <dc:rights>Attribution 4.0 International</dc:rights> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:creator>Bechinger, Clemens</dc:creator> <dc:date rdf:datatype="">2022-11-21T16:17:28Z</dc:date> <dcterms:title>Surface melting of a colloidal glass</dcterms:title> <dcterms:issued>2022-11-03</dcterms:issued> <dcterms:available rdf:datatype="">2022-11-21T16:17:28Z</dcterms:available> <dc:contributor>Tian, Li</dc:contributor> <bibo:uri rdf:resource=""/> <dc:language>eng</dc:language> </rdf:Description> </rdf:RDF>

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