Abstract:Abstract. We investigate the relation between changes in dynamic and thermodynamic anomalies arising from the presence of the liquid-liquid critical point in (i) Two models of water, TIP5P and ST2, which display a first order liquid-liquid phase transition at low temperatures; (ii) the Jagla model, a spherically symmetric two-scale potential known to possess a liquid-liquid critical point, in which the competition between two liquid structures is generated by repulsive and attractive ramp interactions; and (ii… Show more
“…Stanley et al [256] performed MD simulations to study the relation between dynamic transitions of biomolecules and dynamic properties of water. The TIP5P [360], and ST2 [28] potentials were chosen to describe water confined by lysozyme and DNA.…”
Self-diffusion coefficient of bulk and confined water a critical review of classical molecular simulation studies Tsimpanogiannis, Ioannis N.; Moultos, Othonas A.; Franco, Luís F.M.; Spera, Marcelle B.de M.; Erdös, Mate; Economou, Ioannis G.
“…Stanley et al [256] performed MD simulations to study the relation between dynamic transitions of biomolecules and dynamic properties of water. The TIP5P [360], and ST2 [28] potentials were chosen to describe water confined by lysozyme and DNA.…”
Self-diffusion coefficient of bulk and confined water a critical review of classical molecular simulation studies Tsimpanogiannis, Ioannis N.; Moultos, Othonas A.; Franco, Luís F.M.; Spera, Marcelle B.de M.; Erdös, Mate; Economou, Ioannis G.
“…However, the freezing in the temperature range of interest can be avoided only for water in confined geometries or on the surface of macromolecules [4,6]. Since experiments in the supercooled region are difficult to perform, numerical simulations have played an important role in recent years to help interpret the data.…”
Using Wolff's cluster Monte Carlo simulations and numerical minimization within a mean field approach, we study the low temperature phase diagram of water, adopting a cell model that reproduces the known properties of water in its fluid phases. Both methods allow us to study the thermodynamic behavior of water at temperatures, where other numerical approaches -both Monte Carlo and molecular dynamics -are seriously hampered by the large increase of the correlation times. The cluster algorithm also allows us to emphasize that the liquid-liquid phase transition corresponds to the percolation transition of tetrahedrally ordered water molecules.Published by Elsevier B.V.
“…geometries [16][17][18] or on the surface of macromolecules. [19][20][21][22][23][24][25] Since experiments in simulations has been developed in recent years to help interpret of the data 26,27 . However, simulations at very low temperature T are hampered by the glassy dynamics of the empirical models of water.…”
for bulk, confined and interfacial water. By analyzing a cell model within a mean field approximation and with Monte Carlo simulations, we have showed that all the scenarios proposed for water's P-T phase diagram may be viewed as special cases of a more general scheme. In particular, our study shows that it is the relationship between H bond strength and H bond cooperativity that governs which scenario is valid. The investigation of the properties of metastable liquid water under pressure could provide essential information that could allow us to understanding could, ultimately, lead us to the explanation of the reasons why water is such an essential liquid for life.
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