Discontinuous shear modulus determines the glass transition temperature


Dateien zu dieser Ressource

Dateien Größe Format Anzeige

Zu diesem Dokument gibt es keine Dateien.

KLIX, Christian L., Georg MARET, Peter KEIM, 2015. Discontinuous shear modulus determines the glass transition temperature

@unpublished{Klix2015Disco-30996, title={Discontinuous shear modulus determines the glass transition temperature}, year={2015}, doi={10.1103/PhysRevX.5.041033}, author={Klix, Christian L. and Maret, Georg and Keim, Peter}, note={Erschienen in: Physical Review X ; 5 (2015), 4 ; http://nbn-resolving.de/urn:nbn:de:bsz:352-0-309941} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/30996"> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2015-05-21T07:08:53Z</dc:date> <dc:language>eng</dc:language> <dc:contributor>Maret, Georg</dc:contributor> <dcterms:issued>2015</dcterms:issued> <dcterms:abstract xml:lang="eng">A solid - amorphous or crystalline - is defined by a finite shear modulus while a fluid lacks such. We thus experimentally investigate the elastic properties of a colloidal glass former near the glass transition: spectroscopy of vibrational excitations yields the dispersion relations of longitudinal and transverse phonons in the glassy state. From the long wavelength limit of the dispersion relation we extract the bulk and the shear modulus. As expected, the latter disappear in a fluid and we measure a clearly resolved discontinuous behaviour of the elastic moduli at the glass transition. This not only determines the transition temperature T_G of the system but also directly addresses recent discussions about elasticity during vitrification. We show that low frequency excitations in our system are plane waves such that continuum elasticity theory can be used to describe the macroscopic behaviour.</dcterms:abstract> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2015-05-21T07:08:53Z</dcterms:available> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/30996"/> <dc:contributor>Klix, Christian L.</dc:contributor> <dc:creator>Keim, Peter</dc:creator> <dc:creator>Maret, Georg</dc:creator> <dc:creator>Klix, Christian L.</dc:creator> <dcterms:title>Discontinuous shear modulus determines the glass transition temperature</dcterms:title> <dc:contributor>Keim, Peter</dc:contributor> </rdf:Description> </rdf:RDF>

Das Dokument erscheint in:

KOPS Suche


Mein Benutzerkonto