Nonlocal Ventilating Metasurfaces
Yihuan Zhu, Ruizhi Dong, Dongxing Mao, Xu Wang, Yong Li
Abstract
A traditional metasurface is composed of metaunits that are elaborately designed to provide a precise local response, and these metaunits also inevitably impact mutual radiation from each other, affecting the global response of the metasurface. Beyond those nonlocal metasurfaces that utilize such radiation coupling to promote efficiency in wave manipulation, in this study the coupling effect also serves as a powerful tool for engineering the spectrum, showcased by an acoustic open metasurface that allows airflow while blocking sound in a dramatically extended frequency band. This finding offers an efficient approach for broadband wave manipulation in a hybrid nonlocal manner.
Topics & Concepts
BroadbandCoupling (piping)Blocking (statistics)PhysicsComputer scienceAcousticsRadiationOpticsEngineeringMechanical engineeringComputer networkAcoustic Wave Phenomena ResearchAerodynamics and Acoustics in Jet FlowsMetamaterials and Metasurfaces Applications