Boson Peak in Deeply Cooled Confined Water: A Possible Way to Explore the Existence of the Liquid-to-Liquid Transition in Water

Published

June 13, 2014

Author(s)

Zhe Wang, Kao-Hsiang Liu, Peisi Le, Mingda Li, Wei-Shan Chiang, Juscelino Leao, John R. Copley, Madhu Sudan Tyagi, Andrey Podlesnyak, Alexander I. Kolesnikov, Chung-Yuan Mou, Sow-Hsin Chen

Abstract

The Boson peak in deeply-cooled water confined in nanopores is studied with inelastic neutron scattering. We show that the emergence of the Boson peak is correlated to the Widom line below 1600 bar. Above 1600 bar, the situation is different and from this difference the end-pressure of the Widom line is estimated. This is the second critical point of water if it exists. The frequency and width of the Boson peak correlate with the density of the water, which suggests a method to distinguish the hypothetical "low density liquid" phase and "high density liquid" phase in deeply-cooled water.

Citation

Physical Review Letters

Volume

112

Issue

23

Pub Type

Journals

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Keywords

Boson peak, deeply-cooled water, confined water, liquid-to-liquid transition, neutron scattering, Widom line

Citation

Wang, Z. , Liu, K. , Le, P. , Li, M. , Chiang, W. , Leao, J. , Copley, J. , Tyagi, M. , Podlesnyak, A. , Kolesnikov, A. , Mou, C. and Chen, S. (2014), Boson Peak in Deeply Cooled Confined Water: A Possible Way to Explore the Existence of the Liquid-to-Liquid Transition in Water, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=915415 (Accessed April 26, 2024)