Fragile-to-strong liquid transition in deeply supercooled confined water

A. Faraone, L. Liu, C. Y. Mou, C. W. Yen, S. H. Chen

Research output: Contribution to journalArticlepeer-review

284 Citations (Scopus)

Abstract

Confining water in lab synthesized nanoporous silica matrices MCM-41-S with pore diameters of 18 and 14 Å, we have been able to study the molecular dynamics of water in deeply supercooled states, down to 200 K. Using quasielastic neutron scattering and analyzing the data with the relaxing cage model, we determined the temperature variation of the average translational relaxation time and its Q-dependence. We find a clear evidence of an abrupt change of the relaxation time behavior at T ≈ 225 K, which we interpreted as the predicted fragile-to-strong liquid-liquid transition.

Original languageEnglish
Article number4
Pages (from-to)10843-10846
Number of pages4
JournalJournal of Chemical Physics
Volume121
Issue number22
DOIs
Publication statusPublished - Dec 8 2004
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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