Resonant ultrasonic attenuation in emulsions

11th Anglo-French Physical Acoustics Conference

Brunet, Thomas^1 ; Mascaro, Benoit^1 ; Poncelet, Olivier^1 ; Aristégui, Christophe^1 ; Raffy, Simon^2 ; Mondain-Monval, Olivier^2 ; Leng, Jacques^3

University Bordeaux, CNRS, I2M UMR 5295, F-33405 Talence, France^1

University Bordeaux, CNRS, CRPP UMR 5295, F-33600 Pessac, France^2

University Bordeaux, CNRS, LOF UMR 5258, F-33608 Pessac, France^3

关键词: Acoustic attenuation;    Experimental evidence;    Independent scattering;    Mie scattering;    Quantitative agreement;    Size and shape;    Ultrasonic attenuation;    Ultrasonic experiments;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/457/1/012006/pdf
DOI  :  10.1088/1742-6596/457/1/012006

来源: IOP

【 摘 要 】

We report the achievement of scattering resonant emulsions devoted to the frequency-control of acoustic attenuation in the megahertz range. By means of robotics, we produced highly monodisperse, in both size and shape, fluorinated-oil droplet suspensions, providing experimental evidence of several Mie scattering resonances. Ultrasonic experiments performed in such complex media are compared, with an excellent quantitative agreement, to theoretical predictions derived within the framework of the independent scattering approximation.