Altering Terahertz Sound Propagation in a Liquid upon Nanoparticle Immersion.

Autor: De Francesco A; CNR-IOM & INSIDE@ILL c/o Operative Group in Grenoble (OGG), F-38042 Grenoble, France.; Institut Laue-Langevin (ILL), F-38042 Grenoble, France., Formisano F; CNR-IOM & INSIDE@ILL c/o Operative Group in Grenoble (OGG), F-38042 Grenoble, France.; Institut Laue-Langevin (ILL), F-38042 Grenoble, France., Scaccia L; Dipartimento di Economia e Diritto, Università di Macerata, Via Crescimbeni 20, I-62100 Macerata, Italy., Guarini E; Dipartimento di Fisica e Astronomia, Università di Firenze, Via G. Sansone 1, I-50019 Sesto Fiorentino, Italy., Bafile U; Consiglio Nazionale delle Ricerche, Istituto di Fisica Applicata 'Nello Carrara', Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy., Maccarini M; Université Grenoble-Alpes, CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, F-38000 Grenoble, France., Nykypanchuck D; Energy & Photon Sciences Directorate, Brookhaven National Lab, Upton, NY 11973, USA., Suvorov A; Energy & Photon Sciences Directorate, Brookhaven National Lab, Upton, NY 11973, USA., Cai YQ; Energy & Photon Sciences Directorate, Brookhaven National Lab, Upton, NY 11973, USA., Lynch ST; Department of Physics, University of Wisconsin at Madison, 1150 University Avenue, Madison, WI 53706-1390, USA., Cunsolo A; Department of Physics, University of Wisconsin at Madison, 1150 University Avenue, Madison, WI 53706-1390, USA.
Jazyk: angličtina
Zdroj: Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2022 Jul 14; Vol. 12 (14). Date of Electronic Publication: 2022 Jul 14.
DOI: 10.3390/nano12142401
Abstrakt: 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.
Databáze: MEDLINE
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