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Acoustics of cubic bubbles: six coupled oscillators

Abstract : In this manuscript we introduce cubic bubbles that are pinned to 3D printed millimetric frames immersed in water. Cubic bubbles are more stable over time and space than standard spherical bubbles, while still allowing large oscillations of their faces. We found that each face can be described as a harmonic oscillator coupled to the other ones. These resonators are coupled by the gas inside the cube but also by acoustic interactions in the liquid. We provide an analytical model and 3D numerical simulations predicting the resonance with a very good agreement. Acoustically, cubic bubbles prove to be good monopole sub-wavelength emitters, with non-emissive secondary surfaces modes.
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https://hal.archives-ouvertes.fr/hal-02302146
Contributor : Maxime Harazi <>
Submitted on : Friday, December 20, 2019 - 11:56:36 AM
Last modification on : Tuesday, June 23, 2020 - 12:06:05 PM
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Maxime Harazi, Matthieu Rupin, Olivier Stephan, Emmanuel Bossy, Philippe Marmottant. Acoustics of cubic bubbles: six coupled oscillators. Physical Review Letters, American Physical Society, 2019, 123 (25), ⟨10.1103/PhysRevLett.123.254501⟩. ⟨hal-02302146⟩

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