Compressibility Anomalies in Stretched Water and Their Interplay with Density Anomalies

Holten, Vincent; Qiu, Chen; Guillerm, Emmanuel; Wilke, Max; Ricka, Jaroslav; Frenz, Martin; Caupin, Frédéric (2017). Compressibility Anomalies in Stretched Water and Their Interplay with Density Anomalies. The journal of physical chemistry letters, 8(22), pp. 5519-5522. American Chemical Society 10.1021/acs.jpclett.7b02563

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Water keeps puzzling scientists because of its numerous properties which behave oppositely to those of usual liquids: for instance, water expands upon cooling, and liquid water is denser than ice. To explain this anomalous behavior, several theories have been proposed, with different predictions for the properties of supercooled water (liquid at conditions where ice is stable). However, discriminating between those theories with experiments has remained elusive because of spontaneous ice nucleation. Here we measure the sound velocity in liquid water stretched to negative pressure and derive an experimental equation of state, which reveals compressibility anomalies. We show by rigorous thermodynamic relations how these anomalies are intricately linked with the density anomaly. Some features we observe are necessary conditions for the validity of two theories of water.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Qiu, Chen; Ricka, Jaroslav and Frenz, Martin

Subjects:

600 Technology > 620 Engineering
500 Science > 530 Physics

ISSN:

1948-7185

Publisher:

American Chemical Society

Language:

English

Submitter:

Franziska Stämpfli

Date Deposited:

13 Jun 2018 10:48

Last Modified:

07 Dec 2018 13:13

Publisher DOI:

10.1021/acs.jpclett.7b02563

BORIS DOI:

10.7892/boris.114714

URI:

https://boris.unibe.ch/id/eprint/114714

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