Open AccessMeasurement of the ultrasonic diffusion coefficient in a resonant multiple scattering suspension
Author(s) -
Fanambinana Delmotte,
Thomas Brunet,
Gérald Clisson,
Jacques Leng
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1761/1/012004
Subject(s) - suspension (topology) , ultrasonic sensor , diffusion , materials science , dispersity , thermal diffusivity , scattering , optics , range (aeronautics) , analytical chemistry (journal) , acoustics , composite material , chemistry , physics , thermodynamics , chromatography , polymer chemistry , mathematics , homotopy , pure mathematics
We report on frequency-resolved experimental measurements of the ultrasonic diffusivity in the MHz range. By means of robotics, we produced a highly monodisperse suspension made of soft metallic micro-beads randomly-dispersed in a water-based gel-matrix. The measured diffusion coefficient is shown to vary significantly with frequency by more than one order of magnitude that is probably due to the sharp scattering resonances of the metallic particles.