Paris, 16 April 2014

How do liquid foams block sound ?

Liquid foams have a remarkable property: they completely block the transmission of sound over a wide range of frequencies. CNRS physicists working in collaboration with teams from Paris Diderot and Rennes Universities1
have studied how sound is attenuated in liquid foams. Their findings, published in Physical Review Letters, open the way to the development of tools called acoustic probes that could be used to monitor the quality of foams used in industry, especially in the mining and petroleum sectors.

To download the press release: Bulle de savon


1From the 'Matière et Systèmes Complexes' Laboratory (CNRS/Université Paris Diderot) and the Institut de Physique de Rennes (CNRS/Université Rennes 1)


Resonant Acoustic Propagation and Negative Density in Liquid Foams. J. Pierre, B. Dollet, and V. Leroy. Physical Review Letters. 11 April 2014.
DOI : View web site


CNRS researcher l Valentin Leroy l T + 33 (0)1 57 27 62 59 l
CNRS Press Office l Alexiane Agullo l T + 33 (0)1 44 96 43 90 l


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