Acoustic properties of Vycor porous glass at hypersonic frequencies Auteur(s): Levelut C., Pelous Jacques (Article) Publié: Journal Of Physics: Condensed Matter, vol. 19 p.416110 (2007) Ref HAL: hal-00175445_v1 PMID 28192342 DOI: 10.1088/0953-8984/19/41/416110 WoS: 000249987300033 Exporter : BibTex | endNote 1 Citation Résumé: Brillouin scattering experiments have been performed from 5 to 1600 K in vycor, a porous silica glass. The acoustic velocity and attenuation at hypersonic frequencies are compared to those of bulk silica and others porous silica samples. The experimental evidence for the influence of porosity on the scattering by acoustic waves is compared to calculations. The correlation between internal friction and thermal conductivity at low temperature is discussed. |