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

Topological valley metamaterial in classical wave systems has shown great potential for
manipulating electromagnetic, acoustic, and elastic waves due to the defect-immune and …

We present a reconfigurable electro-elastic topological insulator that produces a new valley
phase with a large Chern number. This piezoelectric metamaterial comprises a hexagon-like …

Tuning the band gap by mechanically generating deformation of soft phononic crystals
provides an effective means to manipulate the propagation of acoustic waves. In this paper …

Tunable acoustic metamaterials have excellent sound waves control and manipulation
properties because of their deformations under different stimuli. Pneumatic actuation has …

To develop phononic topological insulators (PTIs) with time reversal invariance, phononic
crystals (PCs) are elaborately configurated to ensure the lattice symmetry and meanwhile to …

The acoustic topological waveguide (ATW) hosting topologically protected waveguide
modes provides a unique opportunity for achieving large-scale sound transport with …

Acoustic topological insulators (ATIs) with topological states that are insensitive to defects
and impurities offer a robust way to steer acoustic waves. However, current ATIs in square …

Based on the quantum valley Hall effect analogy, this work proposes a phononic crystal
plate with ligament-type beams to obtain the topological valley transmission of elastic …

This paper analyses the thermal buckling and thermomechanical bending responses of
sandwich plates with FGM face layers, using new quasi-three-, and two-dimensional HSDTs …