Presentation Information
[10a-E308-9][Invited Talk] A new paradigm of ice crystal growth from supercooled water
〇Ken-ichiro Murata1 (1.ILTS, Hokkaido Univ.)
Keywords:
crystal growth,in situ observations
We report our recent study on the step-bunching instability (SBI) that appears during the melt growth of ice. SBI is an interfacial instability arising from the self-organization of elementary step flow inherent to crystal growth dynamics. Using an advanced optical microscope combined with a two-beam interferometer, we achieved quantitative in situ observations of the spatiotemporal evolution of SBI with nanometric height sensitivity. These measurements allow us to identify the origin of SBI in terms of step–step interactions. The insights gained from this work provide an important foundation for understanding the fundamental mechanisms governing melt growth far beyond the specific case of ice crystals, with implications that extend across multiple research areas, including cryobiology, geophysics, and materials science.