Please use this identifier to cite or link to this item: http://hdl.handle.net/2307/355
Title: "Similarities" between confined and supercooled water
Authors: Ricci, Maria Antonietta
Bruni, Fabio
Giuliani, Alessia
Keywords: INELASTIC NEUTRON-SCATTERING
SINGULARITY-FREE INTERPRETATION
RADIAL-DISTRIBUTION FUNCTIONS
VYCOR GLASS
MOMENTUM DISTRIBUTION
BEHAVIOR
LIQUID
THERMODYNAMICS
DIFFRACTION
POTENTIALS
Issue Date: 9-Sep-2009
Publisher: Royal Society of Chemistry
Abstract: Neutron diffraction and deep inelastic neutron scattering experimentsperformed on bulk stable and supercooled water compared with the sameexperiments performed on water confined in silica substrates.Similarities and differences between the two cases clearly show up, asfar as both microscopic structure and single proton dynamics areconcerned. In particular in both supercooled bulk water and water underconfinement we observe a closer average distance between firstneighbouring oxygen sites and shortening of the H-bonds. In contrastthe number of H-bonds per molecule and the number of interstitial watermolecules are severely reduced under confinement, and the second peakof the oxygen-oxygen radial distribution function is shifted to shorterdistances, compared to the bulk phase. Based on these results apossible scenario for understanding changes evidenced by deed inelasticneutron scattering when water is either confined or supercooled isproposed.
URI: http://hdl.handle.net/2307/355
ISSN: 1364-5498
DOI: 10.1039/b805706k
Appears in Collections:A - Articolo su rivista
X_Dipartimento di Fisica 'Edoardo Amaldi'

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