Acoustic/elastic metamaterials exhibit a wealth of unusual properties conducive to wave
manipulation. This review outlines state-of-the-art developments from FPUT chains, granular …

Traditional asymmetric transmission of elastic waves is mostly based on mode conversion,
which presents a real challenge to get pure-mode elastic waves. In this letter, without the aid …

We investigate how Rayleigh waves interact with time-modulated resonators located on the
free surface of a semi-infinite elastic medium. We begin by studying the dynamics of a single …

One dimensional active metamaterials with broadband controllable bending stiffness are
studied in this paper. The key unit of the active metamaterials is composed of a host beam …

A nonreciprocal system composed of a one-dimensional piezoelectric phononic crystal
whose periodic electrical conditions are modulated in time is presented. One-way …

In this letter, prestress is harnessed to break the spatial or/and time wave reciprocity and
realize asymmetric elastic wave propagations in the full elastodynamic context. Unlike other …

Asymmetric transmission in which wave energy propagates only in one direction attracts
significant attention in various fields because of its rich physics and potential applications. In …

This study establishes a non-Bloch band theory for time-modulated discrete mechanical
systems. We consider simple mass–spring chains whose stiffness is periodically modulated …

A modulated metamaterial that exhibits both time-periodic stiffness and mass simultaneously
is presented. The metamaterial element includes a primary body that undergoes …

The recent progress in the context of elastic metamaterials and modulated waveguides with
digitally controllable properties has opened new pathways to overcome the limitations …