The THz Spectrum of Density Fluctuations of Water: The Viscoelastic Regime
Author
Source
Advances in Condensed Matter Physics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-24, 24 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-26
Country of Publication
Egypt
No. of Pages
24
Main Subjects
Abstract EN
Relevant advances in the knowledge of the water dynamics at mesoscopic scales are reviewed, while mainly focusing on the contribution provided by high resolution inelastic X-ray scattering (IXS).
In particular it is discussed how the use of IXS has improved our understanding of viscoelastic properties of water at THz frequencies.
This specifically involves some solid-like features such as the onset of shear wave propagation, a sound velocity surprisingly similar to the one of ice, and an anomalously low sound absorption coefficient.
All these properties can be explained by assuming the coupling of THz density fluctuations with a structural relaxation process connected to the breaking and forming of hydrogen bonds (HBs).
This review also includes more recent IXS results demonstrating that, upon approaching supercritical conditions, relaxation phenomena in water gradually lose their structural character becoming essentially collisional in character.
Furthermore, GHz spectroscopy results on supercooled water, suggesting the occurrence of a structural arrest, are discussed.
An overview of the new opportunities offered by next generation IXS spectrometers finally concludes this review.
American Psychological Association (APA)
Cunsolo, Alessandro. 2015. The THz Spectrum of Density Fluctuations of Water: The Viscoelastic Regime. Advances in Condensed Matter Physics،Vol. 2015, no. 2015, pp.1-24.
https://search.emarefa.net/detail/BIM-1052224
Modern Language Association (MLA)
Cunsolo, Alessandro. The THz Spectrum of Density Fluctuations of Water: The Viscoelastic Regime. Advances in Condensed Matter Physics No. 2015 (2015), pp.1-24.
https://search.emarefa.net/detail/BIM-1052224
American Medical Association (AMA)
Cunsolo, Alessandro. The THz Spectrum of Density Fluctuations of Water: The Viscoelastic Regime. Advances in Condensed Matter Physics. 2015. Vol. 2015, no. 2015, pp.1-24.
https://search.emarefa.net/detail/BIM-1052224
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052224