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Continuous and Discontinuous Dynamic Crossover in Supercooled Water in Computer Simulations

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Specialty Chemistry
Date 2016 Aug 2
PMID 27476514
Citations 2
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Abstract

The dynamic crossover behavior of supercooled water as described by the first-principle based WAIL potential was investigated. Below the second liquid-liquid critical point, the viscosity shows a discontinuous jump consistent with a first-order phase transition between the high density liquid and the low density liquid. Above the critical point, a continuous transition occurs with only the first derivative of viscosity being discontinuous, and the dynamic crossover temperature is about 8 K below the thermodynamic switchover temperature. The 8 K shift can be explained by a delay in dynamic crossover, which does not occur until the more viscous liquid starts to dominate the population and jams the flow. On the basis of finite-size effects observed in our simulations, we believe that dynamic discontinuity may be observable above the critical point in confined water when the confinement is on a length scale shorter than the spatial correlation.

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References
1.
Kobayashi M, Tanaka H . Possible link of the V-shaped phase diagram to the glass-forming ability and fragility in a water-salt mixture. Phys Rev Lett. 2011; 106(12):125703. DOI: 10.1103/PhysRevLett.106.125703. View

2.
Smallenburg F, Sciortino F . Tuning the Liquid-Liquid Transition by Modulating the Hydrogen-Bond Angular Flexibility in a Model for Water. Phys Rev Lett. 2015; 115(1):015701. DOI: 10.1103/PhysRevLett.115.015701. View

3.
Cupane A, Fomina M, Piazza I, Peters J, Schiro G . Experimental evidence for a liquid-liquid crossover in deeply cooled confined water. Phys Rev Lett. 2014; 113(21):215701. DOI: 10.1103/PhysRevLett.113.215701. View

4.
Chen S, Zhang Y, Lagi M, Chong S, Baglioni P, Mallamace F . Evidence of dynamic crossover phenomena in water and other glass-forming liquids: experiments, MD simulations and theory. J Phys Condens Matter. 2011; 21(50):504102. DOI: 10.1088/0953-8984/21/50/504102. View

5.
Gallo P, Corradini D, Rovere M . Widom line and dynamical crossovers as routes to understand supercritical water. Nat Commun. 2014; 5:5806. DOI: 10.1038/ncomms6806. View