Substrate induced crystallization of amorphous solid water at low temperatures
Journal Article
·
· Journal of Chemical Physics
- Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, 902 Battelle Boulevard, P.O. Box 999, MSN K8-88, Richland, Washington 99352 (United States)
We show that N{sub 2} monolayer desorption from ice surfaces is a quantitative, highly sensitive method for following the surface crystallization kinetics at low temperatures. Vapor deposited water films on a crystalline ice substrate exhibit amorphous growth at temperatures below {approximately}110 K. The rate of crystallization for these amorphous films is dramatically accelerated compared to the rate of crystallization observed for the amorphous films deposited directly on Pt(111). We find that the crystalline ice substrate acts as a two-dimensional nucleus for the growth of the crystalline phase, thereby accelerating the crystallization kinetics. {copyright} {ital 1999 American Institute of Physics.}
- OSTI ID:
- 321951
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 12 Vol. 110; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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