Sharp acoustic multipolar-resonances in highly monodisperse emulsions
Language
en
Article de revue
This item was published in
Applied Physics Letters. 2012-07-06, vol. 101, n° 1, p. 011913 (1-4)
American Institute of Physics
English Abstract
We report the achievement of highly monodisperse emulsions exhibiting about ten acoustic Mie resonances. Thanks to robotics, the effective acoustic properties of such strongly scattering media can be precisely targeted by ...Read more >
We report the achievement of highly monodisperse emulsions exhibiting about ten acoustic Mie resonances. Thanks to robotics, the effective acoustic properties of such strongly scattering media can be precisely targeted by means of the production of calibrated (random) liquid-droplets. Ultrasonic experiments are compared, with an excellent quantitative agreement, to theoretical predictions derived within the framework of the independent scattering approximation. The dependence of the sound speed and of the acoustic attenuation on both the size and the volume fraction of droplets is quantitatively examined for dilute and more concentrated emulsions, and is presented in a dimensionless way.Read less <
Keywords
Acoustic
Resonance
Monodisperse emulsions
ANR Project
Approche rationnelle pour la réalisation de métamatériaux pour l'acoustique ultrasonore - ANR-11-BS09-0021
Origin
Hal imported