Mean-square displacement relationship in bioprotectant systems by elastic neutron scattering (Articolo in rivista)

Type
Label
  • Mean-square displacement relationship in bioprotectant systems by elastic neutron scattering (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/S0006-3495(04)74372-6 (literal)
Alternative label
  • S. Magaz├╣; G. Maisano; F. Migliardo; C. Mondelli (2004)
    Mean-square displacement relationship in bioprotectant systems by elastic neutron scattering
    in Biophysical journal (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S. Magaz├╣; G. Maisano; F. Migliardo; C. Mondelli (literal)
Pagina inizio
  • 3241 (literal)
Pagina fine
  • 3249 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 86 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 9 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Messina, Dipartimento Fis, I-98166 Messina, Italy INFM-OGG Institut Laue Langevin Grenoble, France (literal)
Titolo
  • Mean-square displacement relationship in bioprotectant systems by elastic neutron scattering (literal)
Abstract
  • Neutron intensity elastic scans on trehalose, maltose, and sucrose/H2O mixtures as a function of concentration, temperature, and exchanged wave vector are presented. The experimental findings show a crossover in molecular fluctuations between harmonic and anharmonic dynamical regimes. A new operative definition for the degree of fragility of glass-forming systems is furnished by using explicitly the connection between viscosity and mean-square displacement. The procedure is tested for the investigated mixtures and for a set of glass-forming systems. In this frame, the stronger character of trehalose/H2O mixture indicates a better attitude in respect to maltose and sucrose/H2O mixtures to encapsulate biostructures in a more rigid matrix. (literal)
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