Altering Terahertz Sound Propagation in a Liquid upon Nanoparticle Immersion - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nanomaterials Année : 2022

Altering Terahertz Sound Propagation in a Liquid upon Nanoparticle Immersion

Résumé

One of the grand challenges of new generation Condensed Matter physicists is the development of novel devices enabling the control of sound propagation at terahertz frequency. Indeed, phonon excitations in this frequency window are the leading conveyor of heat transfer in insulators. Their manipulation is thus critical to implementing heat management based on the structural design. To explore the possibility of controlling the damping of sound waves, we used high spectral contrast Inelastic X-ray Scattering (IXS) to comparatively study terahertz acoustic damping in a dilute suspension of 50 nm nanospheres in glycerol and on pure glycerol. Bayesian inference-based modeling of measured spectra indicates that, at sufficiently large distances, the spectral contribution of collective modes in the glycerol suspension becomes barely detectable due to the enhanced damping, the weakening, and the slight softening of the dominant acoustic mode.
Fichier principal
Vignette du fichier
2022_DeFrancesco_Nanomaterials.pdf (3.26 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03798044 , version 1 (05-10-2022)

Identifiants

Citer

Alessio de Francesco, Ferdinando Formisano, Luisa Scaccia, Eleonora Guarini, Ubaldo Bafile, et al.. Altering Terahertz Sound Propagation in a Liquid upon Nanoparticle Immersion. Nanomaterials, 2022, 12 (14), pp.2401. ⟨10.3390/nano12142401⟩. ⟨hal-03798044⟩
805 Consultations
12 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More