High-pressure viscoelastic properties and equation of state of liquids derived from Brillouin data

W. F. Oliver, C. A. Herbst, Stuart Lindsay, George Wolf

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Brillouin scattering in an organic glass-forming liquid up to a pressure of 12 GPa is reported. The onset of the unrelaxed regime is indicated by a distinct maximum in the acoustic attenuation at a pressure P± above which weak shear modes are resolved. Sound velocity data are fitted in a self-consistent way which accounts for relaxation by combining the universal Vinet equation of state with an expression for the dynamical modulus. This analysis yields the pressure dependences of the relaxed and unrelaxed moduli, relaxation time, and density over the pressure range studied.

Original languageEnglish (US)
Pages (from-to)2795-2798
Number of pages4
JournalPhysical Review Letters
Volume67
Issue number20
DOIs
StatePublished - 1991

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equations of state
liquids
acoustic attenuation
acoustic velocity
pressure dependence
relaxation time
shear
glass
scattering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

High-pressure viscoelastic properties and equation of state of liquids derived from Brillouin data. / Oliver, W. F.; Herbst, C. A.; Lindsay, Stuart; Wolf, George.

In: Physical Review Letters, Vol. 67, No. 20, 1991, p. 2795-2798.

Research output: Contribution to journalArticle

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