Acoustics of cubic bubbles: six coupled oscillators
arXiv:1909.13724 · doi:10.1103/PhysRevLett.123.254501
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.
arXiv comment5 pages with 4 figures, supplementary material with two figures. To appear in Physical Review Letters, with Editors' suggestion
References in corpus (5)
- Enhanced and reduced transmission of acoustic waves with bubble meta-screens
- Time reversal sub-wavelength focusing in bubbly media
- Nanometer-Resolved Collective Micromeniscus Oscillations through Optical Diffraction
- Acoustic double negativity induced by position correlations within a disordered set of monopolar resonators
- Oscillations of a gas pocket on a liquid-covered solid surface
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