Within a time span of 15 years, acoustic metamaterials have emerged from academic
curiosity to become an active field driven by scientific discoveries and diverse application …

Guided waves, elastic waves propagating through bounded structures, play a pivotal role in
various applications, including ultrasonic non-destructive testing and structural health …

A novel hierarchical re-entrant honeycomb metamaterial is proposed by integrating the re-
entrant honeycomb (RH) with square unit cell and named as square re-entrant honeycomb …

Negative refraction of elastic waves has been studied and experimentally demonstrated in
three-and two-dimensional phononic crystals, but Bragg scattering is impractical for low …

We present a structurally and conceptually simple acoustic double negative metamaterial
comprising two coupled membranes. Owing to its symmetry, the system can generate both …

Metamaterials can exhibit electromagnetic and elastic characteristics beyond those found in
nature. In this work, we present a design of elastic metamaterial that exhibits multiple …

We propose a type of elastic metamaterial comprising fluid-solid composite inclusions which
can possess a negative shear modulus and negative mass density over a large frequency …

Propagation of elastic waves in acoustic metamaterials based on locally resonant
viscoelastic phononic crystals is discussed. A variational formulation of the complex band …

We fabricated a one-dimensional acoustic metamaterial with negative effective density using
an array of very thin elastic membranes. We observed acoustic equivalence of the plasma …

In this work, a chiral metacomposite is proposed by integrating two-dimensional periodic
chiral lattice with elastic metamaterial inclusions for low-frequency wave applications. The …