Super-Absorption of Acoustic Waves with Bubble Meta-Screens

Valentin Leroy (1) , Anatoliy Strybulevych (2) , Maxime Lanoy (1, 3) , Fabrice Lemoult (2, 3) , Arnaud Tourin (3) , John H. Page (2)

1 MSC - Matière et Systèmes Complexes
2 Department of physics and astronomy [Winnipeg]
3 IL - Institut Langevin - Ondes et Images (UMR7587)

A bubble meta-screen, i.e. a single layer of gas inclusions in a soft solid, can be modeled as an acoustic open resonator, whose behavior is well captured by a simple analytical expression. We show that by tuning the parameters of the meta-screen, acoustic super-absorption can be achieved over a broad frequency range, which is confirmed by finite element simulations and experiments. Bubble meta-screens can thus be used as ultra thin coatings for turning acoustic reflectors into perfect absorbers.

Domains: Materials Science [cond-mat.mtrl-sci]

Valentin Leroy, Anatoliy Strybulevych, Maxime Lanoy, Fabrice Lemoult, Arnaud Tourin, et al.. Super-Absorption of Acoustic Waves with Bubble Meta-Screens. 2014. ⟨hal-01090207v1⟩