Hall effect of angular momentum-carrying acoustic waves interacting with metasurfaces

This research focuses on investigating the fundamental wave dynamics of acoustic Hall effect for angular momentum-carrying acoustic waves interacting with metasurfaces. The Hall effect was first studied in electric and magnetic fields, and then in optics, and is herein extended to acoustics. Metasurfaces can manipulate wavefronts in a desired way that natural materials cannot achieve and has found promising applications in acoustics in the past decades. By introducing metasurfaces, the phenomenon of acoustic Hall effect is herein studied by numerical simulations and experimental measurements. This fundamental study of the acoustic Hall effect will help to understand the basis of the associated wave dynamics that can find applications like underwater communications and medical treatments. The fundamental physics of angular momentum-carrying acoustic waves interacting with metasurfaces will also inspire studies in the corresponding area in optics.