Fragile to strong crossover and Widom line in supercooled water: A comparative study
Margherita De Marzio , Gaia Camisasca , Mauro Rovere , Paola Gallo
Front. Phys. ›› 2018, Vol. 13 ›› Issue (1) : 136103
Fragile to strong crossover and Widom line in supercooled water: A comparative study
The aim of this paper is to discuss the relationship between the dynamics and thermodynamics of water in the supercooled region. Reviewed case studies comprehend bulk water simulated with the SPC/E, TIP4P and TIP4P/2005 potentials, water at protein interfaces, and water in solution with electrolytes. Upon supercooling, the fragile to strong crossover in the-relaxation of water is found to occur when the Widom line emanating from the liquid-liquid critical point is crossed. This appears to be a general characteristic of supercooled water, not depending on the applied interaction potential and/or different local environments.
molecular dynamics simulation / supercooled water / slow dynamics / hydration water / aqueous solutions
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Higher Education Press and Springer-Verlag GmbH Germany
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