Pressure dependence of fragile-to-strong transition and a possible second critical point in supercooled confined water

Li Liu, Sow Hsin Chen, Antonio Faraone, Chun Wan Yen, Chung Yuan Mou

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435 引文 斯高帕斯(Scopus)

摘要

By confining water in nanopores of silica glass, we can bypass the crystallization and study the pressure effect on the dynamical behavior in deeply supercooled state using neutron scattering. We observe a clear evidence of a cusplike fragile-to-strong (FS) dynamic transition. Here we show that the transition temperature decreases steadily with an increasing pressure, until it intersects the homogenous nucleation temperature line of bulk water at a pressure of 1600 bar. Above this pressure, it is no longer possible to discern the characteristic feature of the FS transition. Identification of this end point with the possible second critical point is discussed.

原文英語
文章編號117802
期刊Physical Review Letters
95
發行號11
DOIs
出版狀態已發佈 - 9月 9 2005
對外發佈

ASJC Scopus subject areas

  • 物理與天文學 (全部)

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