Bound States in the Continuum in Compact Acoustic Resonators

Abstract

We reveal that finite-size solid acoustic resonators can support genuine bound states in the continuum (BICs) completely localized inside the resonator. The developed theory provides the multipole classification of such BICs in the resonators of various shapes. It is shown how breaking of the resonator's symmetry turns BICs into quasi-BICs manifesting themselves in the scattering spectra as high-Q Fano resonances. We believe that the revealed novel states will push the performance limits of acoustic devices and will serve as high-Q building blocks for acoustic sensors, antennas, and topological acoustic structures.

14 pages, 5 figures

References in corpus (4)

• Interference traps waves in open system: Bound states in the continuum
• Sound Trapping in an Open Resonator
• Observation of phonon trapping in the continuum with topological charges
• Excitation of a bound state in the continuum via spontaneous symmetry breaking

Cited by in corpus (16)

• Applications of Bound States in the Continuum in Photonics
• Optical manipulation with metamaterial structures
• Strongly enhanced light-matter coupling of a monolayer WS2 from a bound state in the continuum
• Bound states in the continuum in photonic structures
• A Universal Mirror-stacking Approach for Constructing Topological Bound States in the Continuum
• Robust enhancement of high-harmonic generation from all-dielectric metasurfaces enabled by polarization-insensitive bound states in the continuum
• When does nonlinear circular dichroism appear in achiral dielectric nanoparticles?
• Acoustic Bound States in the Continuum in Coupled Helmholtz Resonators
• Exceptional points in single open acoustic resonator due to the symmetry breaking
• Deployable Nanoelectromechanical Bound States in the Continuum Enabled by GHz Lamb Wave Phononic Crystals on LiNbO3 Thin Films
• Bound states in the continuum induced via local symmetries in complex structures
• Bound states in the continuum in a fluxonium qutrit
• Optimal multipole center for subwavelength acoustic scatterers
• Lattice-induced sound trapping in biperiodic metasurfaces of acoustic resonators
• Layer-number parity induced topological phase transition
• Uncovering Bound States in the Continuum in InSb nanowire networks