Pressure Dependence of Acoustic Properties in Glycerol by Brillouin Scattering

ORAL

Abstract

Glycerol, a glass-forming fluid, is widely used in research and laboratory settings as a cryoprotectant. We employed high-pressure Brillouin scattering to study the pressure dependencies of longitudinal and transverse acoustic modes of glycerol up to 14 GPa in diamond anvil cells. We observed the transverse acoustic mode which has been unobserved in previous experiments. Our results allow us to derive values for a complete set of elastic properties for glycerol in this pressure range, as well as its density-pressure equation of state. In addition, we performed direct measurements of the pressure-volume equation of state from the sample thickness and area. Our results further allow us to quantify the pressure dependence of γ, the ratio of the adiabatic to the isothermal bulk modulus.

*This research was supported by NSF (DMR-1933622), DOE/NNSA (DE-NA0003975) and the US Department of Defense through the Educational and Research Training Collaborative at UIC, under award HQ 00342010037

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Presenters

  • Cade M Vallero

    • University of Illinois at Chicago, USA

Authors

  • Cade M Vallero

    • University of Illinois at Chicago, USA

  • Muhetaer Aihaiti

    • University of Illinois Chicago
    • Carnegie Inst of Washington
    • Department of Physics, University of Illinois at Chicago, Chicago, IL 60607, USA
    • University of Illinois at Chicago, USA

  • Sergey N Tkachev

    • GSECARS, Advanced Photon Source, Argonne National Laboratory

  • Stella Chariton

    • Center for Advanced Radiation Sources, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637, USA
    • Center for Advanced Radiation Sources, University of Chicago
    • University of Chicago
    • GSECARS, Advanced Photon Source, Argonne National Laboratory

  • Vitali B Prakapenka

    • Center for Advanced Radiation Sources, University of Chicago
    • University of Chicago
    • Center for Advanced Radiation Sources, University of Chicago, Chicago, IL 60439, USA
    • GSECARS, Advanced Photon Source, Argonne National Laboratory

  • Seiji Kojima

    • University of Tsukuba, Japan

  • Russell J Hemley

    • University of Illinois Chicago
    • University of Illinois at Chicago
    • George Washington Univ
    • Departments of Physics and Chemistry, University of Illinois at Chicago
    • Department of Physics, University of Illinois at Chicago, Chicago, IL 60607, USA; Department of Chemistry, University of Illinois at Chicago, Chicago, IL 60607, USA
    • Department of Physics, University of Illinois Chicago, Chicago, USA
    • University of Illinois at Chicago, USA