On the insights into phases of liquid water from study of its unusual glass-forming properties

Details On the insights into phases of liquid water from study of its unusual glass-forming properties On the insights into phases of liquid water from study of its unusual glass-forming properties

2008-06-29

arxiv.org/abs/0806.4775v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages

Scientific paper

We investigate whether an interpretation of water's thermodynamics [Science, 319, 582 (2008)] by using analogy with the binary metal alloys lambda-type ordering transition or buckminsterfullerene's orientational-ordering transition has merit. On examining the heat capacity data used for the nanoconfined water, the construction of the heat capacity peak, and the number of water molecules in nanoconfinement, we find that (i) the peak had been obtained by joining the data for emulsified water with that of the nanoconfined water and (ii) only three water molecules can be fitted across the 1.1 nm diameter pores used in the study, two of which form a cylindrical shell that is hydrogen bonded to silica. The remaining connectedness of one water molecule would not produce a metal alloy-like lambda-transition, or cooperative motions. Therefore, there is no basis for considering such an ordering in supercooled water.

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