Water and solutions at negative pressure: Raman spectroscopic study to -80 megapascals

J. L. Green, D. J. Durben, George Wolf, Charles Angell

Research output: Contribution to journalArticle

83 Scopus citations

Abstract

Microscopic inclusions of aqueous fluids trapped in interstices in quartz and other crystals provide novel systems for the deliberate study of liquids under tension. Liquids under tension should differ in interesting ways from those at ambient pressure or compressed liquids because attractive, rather than repulsive, forces should dominate their behavior. Static tensions in excess of 100 megapascals (∼1000 atmospheres) have been obtained reproducibly. Video-recorded observations of the final liquid rupture process, coupled with extrapolations of data at positive pressure, suggest that the homogeneous vapor nucleation point was reached in two of the cases studied. Raman spectra of the fluids at -80 megapascals show that an isothermal volume stretch of ∼5 percent by volume has only a weak effect on the spectral features and is similar to the effect of isobaric heating.

Original languageEnglish (US)
Pages (from-to)649-652
Number of pages4
JournalScience
Volume249
Issue number4969
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • General

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