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Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12128/8666
Title: Evidence of a one-dimensional thermodynamic phase diagram for simple glass-formers
Authors: Hansen, H. W.
Sanz, A.
Adrjanowicz, Karolina
Frick, B.
Niss, K.
Keywords: glass; liquid; diagram; experiment; pressure; spectroscopy; temperature; thermodynamics
Issue Date: 2018
Citation: Nature Communications, Vol. 9, Issue 1 (2018), art. no. 518
Abstract: Glass formers show motional processes over an extremely broad range of timescales, covering more than ten orders of magnitude, meaning that a full understanding of the glass transition needs to comprise this tremendous range in timescales. Here we report simultaneous dielectric and neutron spectroscopy investigations of three glass-forming liquids, probing in a single experiment the full range of dynamics. For two van der Waals liquids, we locate in the pressure-temperature phase diagram lines of identical dynamics of the molecules on both second and picosecond timescales. This confirms predictions of the isomorph theory and effectively reduces the phase diagram from two to one dimension. The implication is that dynamics on widely different timescales are governed by the same underlying mechanisms.
URI: http://hdl.handle.net/20.500.12128/8666
DOI: 10.1038/s41467-017-02324-3
ISSN: 2041-1723
Appears in Collections:Artykuły (WNŚiT)

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