The Emergence Processes of two Types of Quasi-Liquid Layer Phases with Different Morphologies on an Ice Basal Face
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- SAZAKI Gen
- Institute of Low Temperature Science, Hokkaido University
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- ASAKAWA Harutoshi
- Institute of Low Temperature Science, Hokkaido University
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- NAGASHIMA Ken
- Institute of Low Temperature Science, Hokkaido University
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- NAKATSUBO Shunichi
- Institute of Low Temperature Science, Hokkaido University
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- FURUKAWA Yoshinori
- Institute of Low Temperature Science, Hokkaido University
Bibliographic Information
- Other Title
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- 氷ベーサル面上での形態が異なる 2 種類の擬似液体層の生成過程
Description
We and Olympus Engineering Co.,Ltd. developed laser confocal microscopy combined with differential interference contrast microscopy (LCM-DIM), by which elementary steps (0.37 nm in thickness) on ice crystal surfaces can be visualized in situ at air-ice interfaces. Using LCM-DIM, we observed surface melting processes of ice crystals in situ, and found that an ice basal face grown from water vapor exhibits two types of quasi-liquid layer (QLL) phases that have different morphologies and dynamics. In this review, we show how these QLL phases emerge from an ice basal face. We found that round liquid-like drops (an α-QLL phase) emerge from outcrops of screw dislocations, and that thin liquid-like layers (a β-QLL phase) appear from crystal surfaces where many microdefects are embedded. These results strongly suggest that strain caused by lattice defects induces the appearance of both QLL phases. In addition, we also found that a β-QLL phase spontaneously forms at the interface between an α-QLL phase and a basal face when the diameter of an α-QLL phase becomes larger than several 10 µm. This result implies that a β-QLL phase has an intermediate structure between those of an α-QLL phase and a basal face.
Journal
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- International journal of microgravity science and application
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International journal of microgravity science and application 31 (3), 100-, 2014-07-31
The Japan Society of Microgravity Application
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Details 詳細情報について
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- CRID
- 1390848250110954112
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- NII Article ID
- 130007842470
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- ISSN
- 21889783
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed