Abstract
Significance Commuting during rush hours teaches us that the denser the crowd, the slower the motion. Liquids follow this law, except water below ambient temperature: Increasing density decreases viscosity! This anomaly witnesses the progressive breaking of the hydrogen bond network in water. Because this network develops upon cooling, dramatic effects of pressure on viscosity are expected in water supercooled below its freezing point. However, no data were hitherto available under these extreme conditions. Using a time-of-flight viscometer, we provide viscosity data down to −29 °C and up to 3,000 atmospheres, revealing that pressure can reduce viscosity by nearly one half. We propose a model that treats water as a mixture of two species, and explains its thermodynamic and dynamic properties.
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Dates
Type | When |
---|---|
Created | 8 years, 4 months ago (April 12, 2017, 9:10 p.m.) |
Deposited | 3 years, 4 months ago (April 13, 2022, 2:23 a.m.) |
Indexed | 3 weeks, 6 days ago (Aug. 6, 2025, 8:12 a.m.) |
Issued | 8 years, 4 months ago (April 12, 2017) |
Published | 8 years, 4 months ago (April 12, 2017) |
Published Online | 8 years, 4 months ago (April 12, 2017) |
Published Print | 8 years, 4 months ago (April 25, 2017) |
Funders
1
EC | European Research Council
10.13039/501100000781
European Research CouncilRegion: Europe
gov (National government)
Labels
1
- ERC
Awards
1
- 240113
@article{Singh_2017, title={Pressure dependence of viscosity in supercooled water and a unified approach for thermodynamic and dynamic anomalies of water}, volume={114}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.1619501114}, DOI={10.1073/pnas.1619501114}, number={17}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Singh, Lokendra P. and Issenmann, Bruno and Caupin, Frédéric}, year={2017}, month=apr, pages={4312–4317} }