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Low- and High-Density Unknown Waters at Ice-Water Interfaces

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Title: Low- and High-Density Unknown Waters at Ice-Water Interfaces
Authors: Niinomi, Hiromasa Browse this author
Kouch, Akira Browse this author
Hama, Tetsuya Browse this author
Nada, Hiroki Browse this author
Yamazaki, Tomoya Browse this author
Kimura, Yuki Browse this author →KAKEN DB
Issue Date: 11-May-2022
Publisher: American Chemical Society
Journal Title: Journal of physical chemistry letters
Volume: 13
Issue: 19
Start Page: 4251
End Page: 4256
Publisher DOI: 10.1021/acs.jpclett.2c00660
Abstract: Experimental confirmation of liquid polymorphs of water, high-density liquid (HDL) and low-density liquid (LDL), is desired for understanding not only the liquid state of matter but also the origin of the mysterious properties of water. However, this remains challenging because the liquid-liquid critical point of water lies in experimentally inaccessible supercooling conditions known as no man's land. Here, we show by in situ optical microscopy that droplets and layers of low- and high-density unknown waters (LDUW and HDUW) appear macroscopically depending upon ice polymorphs at non-equilibrium interfaces between water and ices under experimentally accessible (de)pressurization conditions. These unknown waters were found to have characteristic velocities (about 20 and 100 m/s for LDUW and HDUW, respectively) different from water (about 40 m/s) and quasi-liquid layers (QLLs) (about 2 and 0.2 m/s for droplet and layer forms of QLLs, respectively). Our discoveries provide insight on liquid polymorphism of water.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/articlesonrequest/AOR-RR3TNCITDDRE3HJ2IKDH.
Type: article (author version)
URI: http://hdl.handle.net/2115/89200
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 木村 勇気

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