title: Some considerations on the transport properties of water-glycerol suspensions.
abstract: We study the self-diffusion coefficient and viscosity of a water-glycerol mixture for several glycerol molar fractions as a function of temperature well inside the metastable supercooled regime. We perform NMR experiments and verify that the system has at different concentration a fragile-to-strong crossover accompanied by the violation of the Stokes-Einstein relation. We observe that the crossover temperature depends on the water amount. Studying the fractional representation of the Stokes-Einstein relation, we find that in these systems dynamical arrest does not exhibit criticality and the transport parameters have a universal behavior.
authors.affiliation: Department of Physics, Center for Polymer Studies, Boston University, Boston, Massachusetts 02215, USA.
authors.forename: Francesco
authors.initials: F
authors.lastname: Mallamace
authors.affiliation: Dipartimento MIFT, Sezione di Fisica, Università di Messina, I-98166 Messina, Italy.
authors.forename: Carmelo
authors.initials: C
authors.lastname: Corsaro
authors.affiliation: Dipartimento di Scienze dell'Ambiente, della Sicurezza, del Territorio, degli Alimenti della Salute, Università di Messina Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy.
authors.forename: Domenico
authors.initials: D
authors.lastname: Mallamace
authors.affiliation: Dipartimento MIFT, Sezione di Fisica, Università di Messina, I-98166 Messina, Italy.
authors.forename: Sebastiano
authors.initials: S
authors.lastname: Vasi
authors.affiliation: Consiglio Nazionale delle Ricerche-IPCF Messina, I-98158 Messina, Italy.
authors.forename: Cirino
authors.initials: C
authors.lastname: Vasi
authors.affiliation: Department of Physics, Center for Polymer Studies, Boston University, Boston, Massachusetts 02215, USA.
authors.forename: H Eugene
authors.initials: HE
authors.lastname: Stanley