Abstract: Manipulation for asymmetric wave reflection based on exceptional points (EPs) is studied systematically in elastic media with the space–time modulated stiffness, density, and the simultaneous modulation of them. A theoretical ...

Abstract: Underwater acoustic non-reciprocal transmission via dynamic-modulation structures with time-varying mass and stiffness is studied. The model system consists of spatiotemporally modulated discrete lattices immersed in the ...