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Shrinking of Rapidly Evaporating Water Microdroplets Reveals their Extreme Supercooling

Goy, Claudia ; Potenza, Marco A. C. ; Dedera, Sebastian ; Tomut, Marilena ; Guillerm, Emmanuel ; Kalinin, Anton ; Voss, Kay-Obbe ; Schottelius, Alexander ; Petridis, Nikolaos ; Prosvetov, Alexey ; Tejeda, Guzmán ; Fernández, José M. ; Trautmann, Christina ; Caupin, Frédéric ; Glasmacher, Ulrich ; Grisenti, Robert E. :
Shrinking of Rapidly Evaporating Water Microdroplets Reveals their Extreme Supercooling.
[Online-Edition: https://doi.org/10.1103/PhysRevLett.120.015501]
In: Physical Review Letters, 120 (1) 015501. ISSN 0031-9007
[Artikel] , (2018)

Offizielle URL: https://doi.org/10.1103/PhysRevLett.120.015501

Kurzbeschreibung (Abstract)

The fast evaporative cooling of micrometer-sized water droplets in a vacuum offers the appealing possibility to investigate supercooled water—below the melting point but still a liquid—at temperatures far beyond the state of the art. However, it is challenging to obtain a reliable value of the droplet temperature under such extreme experimental conditions. Here, the observation of morphology-dependent resonances in the Raman scattering from a train of perfectly uniform water droplets allows us to measure the variation in droplet size resulting from evaporative mass losses with an absolute precision of better than 0.2%. This finding proves crucial to an unambiguous determination of the droplet temperature. In particular, we find that a fraction of water droplets with an initial diameter of 6379±12  nm remain liquid down to 230.6±0.6  K. Our results question temperature estimates reported recently for larger supercooled water droplets and provide valuable information on the hydrogen-bond network in liquid water in the hard-to-access deeply supercooled regime.

Typ des Eintrags: Artikel
Erschienen: 2018
Autor(en): Goy, Claudia ; Potenza, Marco A. C. ; Dedera, Sebastian ; Tomut, Marilena ; Guillerm, Emmanuel ; Kalinin, Anton ; Voss, Kay-Obbe ; Schottelius, Alexander ; Petridis, Nikolaos ; Prosvetov, Alexey ; Tejeda, Guzmán ; Fernández, José M. ; Trautmann, Christina ; Caupin, Frédéric ; Glasmacher, Ulrich ; Grisenti, Robert E.
Titel: Shrinking of Rapidly Evaporating Water Microdroplets Reveals their Extreme Supercooling
Sprache: Englisch
Kurzbeschreibung (Abstract):

The fast evaporative cooling of micrometer-sized water droplets in a vacuum offers the appealing possibility to investigate supercooled water—below the melting point but still a liquid—at temperatures far beyond the state of the art. However, it is challenging to obtain a reliable value of the droplet temperature under such extreme experimental conditions. Here, the observation of morphology-dependent resonances in the Raman scattering from a train of perfectly uniform water droplets allows us to measure the variation in droplet size resulting from evaporative mass losses with an absolute precision of better than 0.2%. This finding proves crucial to an unambiguous determination of the droplet temperature. In particular, we find that a fraction of water droplets with an initial diameter of 6379±12  nm remain liquid down to 230.6±0.6  K. Our results question temperature estimates reported recently for larger supercooled water droplets and provide valuable information on the hydrogen-bond network in liquid water in the hard-to-access deeply supercooled regime.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Physical Review Letters
Band: 120
(Heft-)Nummer: 1
Verlag: American Physical Society
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien
Hinterlegungsdatum: 10 Dez 2018 11:06
DOI: 10.1103/PhysRevLett.120.015501
Offizielle URL: https://doi.org/10.1103/PhysRevLett.120.015501
Sponsoren: This work was partially supported by the Bundesministerium für Bildung und Forschung through Grant No. 05K13RF5 and by the Spanish Ministerio de Economía y Competitividad (MINECO) through Grant No. FIS2013-48275-C2.
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