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Surface Tension of Supercooled Water: Inflection Point-Free Course down to 250 K Confirmed Using a Horizontal Capillary Tube
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SYSNO ASEP 0481327 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Surface Tension of Supercooled Water: Inflection Point-Free Course down to 250 K Confirmed Using a Horizontal Capillary Tube Author(s) Vinš, Václav (UT-L) RID, ORCID
Hošek, Jan (UT-L) RID
Hykl, Jiří (UT-L) RID, ORCID
Hrubý, Jan (UT-L) RID, ORCIDNumber of authors 4 Source Title Journal of Chemical and Engineering Data. - : American Chemical Society - ISSN 0021-9568
Roč. 62, č. 11 (2017), s. 3823-3832Number of pages 10 s. Publication form Print - P Language eng - English Country US - United States Keywords horizontal technique ; metastable liquid ; supercooled Subject RIV BJ - Thermodynamics OECD category Thermodynamics R&D Projects GJ15-07129Y GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 UT WOS 000415140900020 EID SCOPUS 85033594551 DOI 10.1021/acs.jced.7b00519 Annotation The temperature course of the surface tension of supercooled water was suspected to exhibit an anomalous feature – the so called second inflection point (SIP). Besides some theoretical and molecular simulation studies, this hypothesis was primarily supported by experimental data by P.T. Hacker (1951). Recently, the present group performed accurate surface tension measurements down to –26 °C using a modified capillary rise technique which, in contrast to Hacker’s data, showed no SIP anomaly. In order to confirm that the qualitatively different observations are not related to some fundamental phenomenon, we developed an experimental device employing basically the same method as Hacker with a horizontal capillary tube. New experimental data for the surface tension of supercooled water measured with the horizontal capillary setup down to –23 °C are presented in this study. The new data show a very good agreement with the previous capillary rise measurements. It was confirmed that the temperature dependence of the surface tension is free of SIP in a temperature range from –23 °C to 23 °C and can be well represented by the IAPWS standard extrapolated below 0.01 °C. However, a small systematic deviation from the IAPWS correlation can be seen at temperatures below –15 °C. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2018
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