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Quasi-liquid layers on ice crystal surfaces are made up of two different phases
| Title: | Quasi-liquid layers on ice crystal surfaces are made up of two different phases |
| Authors: | Sazaki, Gen Browse this author →KAKEN DB | | Zepeda, Salvador Browse this author | | Nakatsubo, Shunichi Browse this author | | Yokomine, Makoto Browse this author | | Furukawa, Yoshonori Browse this author |
| Keywords: | in situ observation | | laser confocal microscopy | | differential interference | | contrast microscopy |
| Issue Date: | 24-Jan-2012 |
| Publisher: | The National Academy of Sciences |
| Journal Title: | Proceedings of the National Academy of Sciences |
| Volume: | 109 |
| Issue: | 4 |
| Start Page: | 1052 |
| End Page: | 1055 |
| Publisher DOI: | 10.1073/pnas.1116685109 |
| Abstract: | Ice plays crucially important roles in various phenomena because of its abundance on Earth. However, revealing the dynamic behavior of quasi-liquid layers (QLLs), which governs the surface properties of ice crystals at temperatures near the melting point, remains an experimental challenge. Here we show that two types of QLL phases appear that exhibit different morphologies and dynamics. We directly visualized the two types of QLLs on ice crystal surfaces by advanced optical microscopy, which can visualize the individual 0.37-nm-thick elementary steps on ice crystal surfaces. We found that they had different stabilities and different interactions with ice crystal surfaces. The two immiscible QLL phases appeared heterogeneously, moved around, and coalesced dynamically on ice crystal surfaces. This picture of surface melting is quite different from the conventional picture in which one QLL phase appears uniformly on ice crystal surfaces. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/50127 |
| 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)
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Submitter: 佐崎 元
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