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Hyperquenched glassy water
When water is cooled below its normal freezing point, it normally freezes to form hexagonal ice, or Ice I. If it is very pure and cooled carefully, it may be supercooled to about -42°C. If water is cooled very rapidly then it forms an amorphoric glass.
Hyperquenched glassy water (HGW) is formed by the rapid spraying of a fine jet of micrometre-sized water droplets into very cold liquefied gas, usually propane, at around or under 80 K, involving cooling rates greater than 105 K per second.
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10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details