Resonant acoustic propagation and negative density in liquid foams

Juliette Pierre; Benjamin Dollet; Valentin Leroy

doi:10.1103/PhysRevLett.112.148307

Resonant acoustic propagation and negative density in liquid foams

Juliette Pierre
, Benjamin Dollet
, Valentin Leroy

Laboratoire Matière et Systèmes Complexes
IPR (Institut de Physique de Rennes) - UMR 6251

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

68 Citations (Scopus)

Résumé

We measured the dispersion relation for acoustic longitudinal waves in liquid foams, over a broad frequency range (60-600 kHz). Strong dispersion was found, with two nondispersive behaviors, separated by a negative density regime. A new model, based on the coupled displacements of films, liquid channels, and gas in the foam, rationalizes all the experimental findings.

langue originale	Anglais
Numéro d'article	148307
journal	Physical Review Letters
Volume	112
Numéro de publication	14
Les DOIs	https://doi.org/10.1103/PhysRevLett.112.148307
état	Publié - 11 avr. 2014
Modification externe	Oui

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10.1103/PhysRevLett.112.148307

Contient cette citation

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title = "Resonant acoustic propagation and negative density in liquid foams",

abstract = "We measured the dispersion relation for acoustic longitudinal waves in liquid foams, over a broad frequency range (60-600 kHz). Strong dispersion was found, with two nondispersive behaviors, separated by a negative density regime. A new model, based on the coupled displacements of films, liquid channels, and gas in the foam, rationalizes all the experimental findings.",

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AB - We measured the dispersion relation for acoustic longitudinal waves in liquid foams, over a broad frequency range (60-600 kHz). Strong dispersion was found, with two nondispersive behaviors, separated by a negative density regime. A new model, based on the coupled displacements of films, liquid channels, and gas in the foam, rationalizes all the experimental findings.

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Resonant acoustic propagation and negative density in liquid foams

Résumé

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