Metamaterials (MMs), which include phononic crystals (PCs) as a particular type, exhibit
anomalous wave propagation properties through artificial design of topologies or lattice …

Willis fluids, or more generally Willis materials, are homogenized composites that exhibit
coupling between momentum and strain. This coupling is intrinsic to inhomogeneous media …

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 …

Materials that require coupling between the stress–strain and momentum–velocity
constitutive relations were first proposed by Willis (Willis 1981 Wave Motion 3, 1–11.(doi …

Based on the granular diatomic lattice chain model, the band gap properties and
nonreciprocal transmission of elastic wave metamaterials with the nonlinearity are studied …

Defects are generally inevitable when fabricating the constituent structures of tensegrity
metamaterials. How structural defects affect the mechanical properties of such …

We present a procedure for the systematic estimation of the dispersion properties of linear
discrete systems with periodic time-varying coefficients. The approach relies on the analysis …

Asymmetric manipulation of acoustic waves has gained significant attention due to its rich
physical properties and potential application prospects. In this study, we design and …

A new type of metamaterial element is proposed to possess time-dependent effective inertial
mass, and proved to be valid for the design of the space-time lattice metamaterial that …

In the design of locally resonant acoustic metamaterials (LRAMs), the incompressible rubber
is widely used. However, the physical behavior of LRAMs with a ternary structure is very …