Compressibility Anomalies in Stretched Water and Their Interplay with Density Anomalies
- 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.
Author details: | Vincent Holten, Chen Qiu, Emmanuel Guillerm, Max WilkeORCiDGND, Jaroslav Ricka, Martin Frenz, Frederic CaupinORCiD |
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DOI: | https://doi.org/10.1021/acs.jpclett.7b02563 |
ISSN: | 1948-7185 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/29043801 |
Title of parent work (English): | The journal of physical chemistry letters |
Publisher: | American Chemical Society |
Place of publishing: | Washington |
Publication type: | Article |
Language: | English |
Year of first publication: | 2017 |
Publication year: | 2017 |
Release date: | 2020/04/20 |
Volume: | 8 |
Number of pages: | 4 |
First page: | 5519 |
Last Page: | 5522 |
Funding institution: | Agence Nationale de la Recherche [CGSmuLab-ANR-12-SEED-0001]; Swiss National Science Foundation [200021-140777] |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften |
Peer review: | Referiert |
Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften |