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Niss, Kristine
Roskilde University
in Cooperation with on an Cooperation-Score of 37%
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Publications (7/7 displayed)
- 2022Piezoelectric shear rheometrycitations
- 2018High-pressure cell for simultaneous dielectric and neutron spectroscopycitations
- 2017Coupling between Molecular Mobility and Kinetics of Crystal Growth in a Hydrogen-Bonded Liquidcitations
- 2017Connection between fragility, mean-squared displacement and shear modulus in two van der Waals bonded glass-forming liquidscitations
- 2015Communication: High pressure specific heat spectroscopy reveals simple relaxation behavior of glass forming molecular liquidcitations
- 2014The dynamic bulk modulus of three glass-forming liquidscitations
- 2005Dielectric and shear mechanical relaxations in glass-forming liquidscitations
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article
Connection between fragility, mean-squared displacement and shear modulus in two van der Waals bonded glass-forming liquids
Abstract
The temperature dependence of the high-frequency shear modulus measured in the kHz range is compared with the mean-squared displacement measured in the nanosecond range for the two van der Waals bonded glass-forming liquids cumene and 5-polyphenyl ether. This provides an experimental test for the assumption<br/>connecting two versions of the shoving model for the non-Arrhenius temperature dependence of the relaxation time in glass formers. The two versions of the model are also tested directly and both are shown to work well for these liquids.