[Invited] Quasi-Bound States in the Continuum for Acoustic and Elastic Waves
Résumé
We study the localization of flexural and acoustic waves in metasurfaces by means of clusters of scatterers. We show that when the scatterers are placed regularly in the perimeter of a circumference these structures form a resonator which quality factor grows up exponentially with the number of scatterers. Numerical experiments are performed for elastic waves in thin elastic plates and acoustic waves trapped atop a metasurface, and an experimental validation of the latter is also presented.