We employed high-pressure Brillouin scattering to study the pressure dependencies of acoustic modes of glycerol up to 14 GPa at 300 K. We observed longitudinal acoustic velocities and transverse acoustic velocities for the first time from 5 to 14 GPa. The results allow the determination of a complete set of elastic properties and an accurate determination of the pressure–volume (P–V) equation of state (EOS). EOS parameters, K0 = 14.9 ± 1.8 GPa and K′0 = 5.6 ± 0.5, were determined from fits to the data from ambient pressure to 14 GPa. Direct volume measurements of the P–V EOS are consistent with those determined by Brillouin scattering. A deviation from a Cauchy-like relationship for elastic properties was observed, and the pressure dependencies of the photoelastic constants and relaxation times were documented from 5 to 14 GPa. These results have broad implications for glass-forming liquids, viscoelastic theory, and mode coupling theory.
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14 August 2023
Research Article|
August 08 2023
Acoustic properties, elasticity, and equation of state of glycerol under pressure
Cade Vallero
;
Cade Vallero
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Department of Physics, University of Illinois Chicago
, Chicago, Illinois 60607, USA
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Muhtar Ahart
;
Muhtar Ahart
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Validation, Visualization, Writing – review & editing)
1
Department of Physics, University of Illinois Chicago
, Chicago, Illinois 60607, USA
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Sergey Tkachev;
Sergey Tkachev
(Methodology)
2
GSECARS, Advanced Photon Source, Argonne National Laboratory
, Lemont, Illinois 60334, USA
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Stella Chariton
;
Stella Chariton
(Methodology)
2
GSECARS, Advanced Photon Source, Argonne National Laboratory
, Lemont, Illinois 60334, USA
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Vitali Prakapenka
;
Vitali Prakapenka
(Methodology)
2
GSECARS, Advanced Photon Source, Argonne National Laboratory
, Lemont, Illinois 60334, USA
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Seiji Kojima
;
Seiji Kojima
(Conceptualization)
3
Faculty of Pure and Applied Sciences, University of Tsukuba
, Tsukuba, Ibaraki 305-8573, Japan
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Stephen A. Gramsch
;
Stephen A. Gramsch
a)
(Funding acquisition, Resources, Supervision, Writing – review & editing)
4
Department of Chemistry, University of Illinois Chicago
, Chicago, Illinois 60607, USA
a)Author to whom correspondence should be addressed: [email protected]
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Russell J. Hemley
Russell J. Hemley
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – review & editing)
1
Department of Physics, University of Illinois Chicago
, Chicago, Illinois 60607, USA
4
Department of Chemistry, University of Illinois Chicago
, Chicago, Illinois 60607, USA
5
Department of Earth and Environmental Sciences, University of Illinois Chicago
, Chicago, Illinois 60607, USA
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a)Author to whom correspondence should be addressed: [email protected]
J. Chem. Phys. 159, 064506 (2023)
Article history
Received:
March 27 2023
Accepted:
July 10 2023
Citation
Cade Vallero, Muhtar Ahart, Sergey Tkachev, Stella Chariton, Vitali Prakapenka, Seiji Kojima, Stephen A. Gramsch, Russell J. Hemley; Acoustic properties, elasticity, and equation of state of glycerol under pressure. J. Chem. Phys. 14 August 2023; 159 (6): 064506. https://doi.org/10.1063/5.0152093
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