Slow Crystal Growth of Cubic Ice with Stacking Faults in a Glassy Dilute Glycerol Aqueous Solution
Slow Crystal Growth of Cubic Ice with Stacking Faults in a Glassy Dilute Glycerol Aqueous Solution
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玻璃状稀甘油水溶液中具有堆垛层错的立方冰的缓慢晶体生长
DOI：
10.1021/acs.jpclett.0c02716
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Takeya Satoshi
中科院分区：
文献类型：
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作者：
Suzuki Yoshiharu;Takeya Satoshi
控制冰的形成是一个重要的问题，因为灾难性的冰的增长影响着我们的生活活动和许多工业系统。采用压力液冷玻璃化法制备了稀甘油水溶液的均质玻璃，并用粉末x射线衍射法考察了溶质对溶剂水结冰的影响。结晶后的溶剂水由纳米级纯立方冰（ice Ic）组成。具有层错的冰Ic的晶体生长速度比纯水慢得多。甘油分子均匀分散的存在可能阻碍晶体生长。在无序堆积冰向六边形冰转变的过程中，宏观偏析迅速发生。结果表明，可以通过改变溶质类型和浓度来控制冰的形成。本研究对低温生物学和冷冻食品工程中的解冻技术具有指导意义。
Control of ice formation is an important issue as catastrophic ice growth influences our life activities and many industrial systems. We prepared a homogeneous glass of a dilute glycerol aqueous solution by a pressure liquid cooling vitrification method and examined the effect of solute on the ice formation of solvent water using a powder X-ray diffraction method. The solvent water immediately after the crystallization is composed of nanosized pure cubic ice (ice Ic). The crystal growth of ice Ic with stacking faults is much slower than that of pure water. The presence of glycerol molecules dispersing homogeneously may hinder crystal growth. The macroscopic segregation occurs rapidly during the transformation from stacking disordered ice to hexagonal ice. The results suggest that ice formation can be controlled by changing the solute type and concentration. This study has implications for thawing technology in cryobiology and frozen food engineering.