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Slow Dynamics in Supercooled Water

Published online by Cambridge University Press:  10 February 2011

Francesco Sciortino,
Piero Tartaglia,
Paola Gallo and
Sow-Hsin Chen
Francesco Sciortino
Affiliation:
Dipartimento di Fisica and Istituto Nazionale per la Fisica della Materia, Università di Roma La Sapienza, P.le Aldo Moro 2, 1–00185, Roma, Italy, fs@dectar.romal.infn.it
Piero Tartaglia
Affiliation:
Dipartimento di Fisica and Istituto Nazionale per la Fisica della Materia, Università di Roma La Sapienza, P.le Aldo Moro 2, 1–00185, Roma, Italy, fs@dectar.romal.infn.it
Paola Gallo
Affiliation:
Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139
Sow-Hsin Chen
Affiliation:
Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139
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Abstract

We review some recent results on the self-dynamics in deep supercooled (simulated) water, obtained by analyzing very long Molecular Dynamics simulations. We discuss the possibility of interpreting the observed slowing down of the dynamics in terms of Mode Coupling Theory for supercooled liquids and, at the same time, of associating the experimentally observed anomalies of the transport coefficients in water on lowering the temperature to the formation of long living cages. The so-called critical Angeli temperature TA in supercooled water could be interpreted as kinetic glass transition temperature, relaxing the need of a thermodynamic singularity for the explanation of the dynamic anomalies of liquid water. In the end we discuss the possibility that TA acts as cross-over temperature from fragile to strong liquid behavior.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 455: Symposium T – Glasses and Glass Formers–Current Issues , 1996, 235
Copyright
Copyright © Materials Research Society 1997

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References

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