Surface and bulk crystallization of amorphous solid water films: Confirmation of “top-down” crystallization
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- 作者：Chunqing Yuan ; R. Scott Smith ; scott.smith@pnnl.gov" class="auth_mail" title="E-mail the corresponding author ; Bruce D. Kay ; bruce.kay@pnnl.gov" class="auth_mail" title="E-mail the corresponding author
- 关键词：Amorphous solid water ; Crystallization kinetics ; Surface nucleation ; Temperature-programmed desorption (TPD) ; Reflection absorption infrared spectroscopy (RAIRS)
- 刊名：Surface Science
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：652
- 期：Complete
- 页码：350-354
- 全文大小：824 K
文摘
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Surface and bulk crystallization of ASW are measured using TPD and IR.
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Surface crystallization is found to be thickness independent.
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Bulk crystallization time increases linearly with increasing film thickness.
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Crystallization starts from the ASW/vacuum interface and propagates into the bulk.
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Isotope-labeled experiments confirms the top-down crystallization mechanism.