| Budget Amount *help |
¥25,610,000 (Direct Cost: ¥19,700,000、Indirect Cost: ¥5,910,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Fiscal Year 2016: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
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| Outline of Final Research Achievements |
We have made in situ observations of ice-water interfaces with laser confocal microscopy combined with differential interference microscopy (LCM-DIM), whose resolution in the height direction reaches the order of an angstrom. We have demonstrated the microscopic structure of these interfaces and the hierarchical dynamics of ice interfaces during the melt growth. Specifically, we have revealed that there exist elementary (mono-molecular) steps even in supercooled water and these elementary steps often exhibit the bunching instability on the vicinal basal face, depending on experimental conditions.
In addition, with the aid of LCM-DIM, we have made direct observations of the formation of quasi liquid layers (QLLs) on ice surfaces, which allows us to elucidate a thermodynamic origin of surface melting of ice crystals. We also succeeded in making in situ observations of the perfect spiral growth during the vapor growth of ice.
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