Study on one-way transmission of acoustic wave based on metasurface

Abstract

Abstract In this paper, using the characteristics of abnormal reflection metasurfaces that can produce different reflection angles, a method that can realize the one-way transmission of acoustic waves is designed, which is verified by simulation. And two different types of metasurface structures are used to verify the unidirectional transmission of acoustic waves. One is the acoustic impedance matching type metasurface, and the other is the geometric groove type metasurface. Based on the generalized Snell’s law, the principle of one-way transmission of sound waves is analyzed, and simulation is carried out by COMSOL multiphysics coupling simulation software, which verifies the theoretical analysis of one-way transmission of acoustic waves. The results of this study may have potential applications in architectural acoustics (such as noise control) and medicine (such as ultrasound therapy).