
Open access
Author
Date
2017Type
- Journal Article
Citations
Cited 23 times in
Web of Science
Cited 23 times in
Scopus
ETH Bibliography
yes
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Abstract
Homogeneous ice nucleation needs supercooling of more than 35 K to become effective. When pressure is applied to water, the melting and the freezing points both decrease. Conversely, melting and freezing temperatures increase under negative pressure, i.e. when water is stretched. This study presents an extrapolation of homogeneous ice nucleation temperatures from positive to negative pressures as a basis for further exploration of ice nucleation under negative pressure. It predicts that increasing negative pressure at temperatures below about 262 K eventually results in homogeneous ice nucleation while at warmer temperature homogeneous cavitation, i. e. bubble nucleation, dominates. Negative pressure occurs locally and briefly when water is stretched due to mechanical shock, sonic waves, or fragmentation. The occurrence of such transient negative pressure should suffice to trigger homogeneous ice nucleation at large supercooling in the absence of ice-nucleating surfaces. In addition, negative pressure can act together with ice-inducing surfaces to enhance their intrinsic ice nucleation efficiency. Dynamic ice nucleation can be used to improve properties and uniformity of frozen products by applying ultrasonic fields and might also be relevant for the freezing of large drops in rainclouds. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000221361Publication status
publishedExternal links
Journal / series
Scientific ReportsVolume
Pages / Article No.
Publisher
Nature Publishing GroupOrganisational unit
03517 - Peter, Thomas / Peter, Thomas
03690 - Lohmann, Ulrike / Lohmann, Ulrike
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Show all metadata
Citations
Cited 23 times in
Web of Science
Cited 23 times in
Scopus
ETH Bibliography
yes
Altmetrics