Impact of Strong Scattering Resonances on Ballistic and Diffusive Wave Transport

Physical Review Letters
Benoit TallonJohn H Page

Abstract

The strong impact of scattering resonances on all the key transport parameters of classical waves in disordered media is demonstrated through ultrasonic experiments on monodisperse emulsions. Through accurate measurements of both ballistic and diffusive transport over a wide range of frequencies, we show that the group velocity is large near sharp resonances, whereas the energy velocity (as well as the diffusion coefficient) is significantly slowed down by resonant scattering delay. Excellent agreement between theory and experiment is found, elucidating the effects of resonant scattering on wave transport in both acoustics and optics.

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Citations

Feb 7, 2018·The European Physical Journal. E, Soft Matter·Olivier LombardChristophe Barrière
Mar 22, 2019·Ultrasonics·Olivier LombardCédric Payan
Sep 4, 2021·Scientific Reports·Benoit TallonSergey E Skipetrov

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