Abstract
Abstract: Unidirectional sound propagation introduces strong direction-dependent responses. Such effect has drawn considerable attentions in acoustics. In this presentation, we introduce some of the interesting unidirectional sound manipulation phenomenon that is achieved by acoustic metamaterials. The experimentally observed phenomenon is associated with the enhanced wave-structure interactions. We can predict and tune the operating frequency by further trimming the material’s geometry. Our demonstration provides a new degree of freedom to the realization of unique wave dynamics for applications like noise control, acoustic sensing, and imaging. [This work was supported by the Early Career Scheme (ECS) of Hong Kong RGC (Grant No. 25208115).]
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