Phononic crystals (PCs) and metamaterials (MMs) can exhibit abnormal properties, even far
beyond those found in nature, through artificial design of the topology or ordered structure of …

The study of granular crystals, which are nonlinear metamaterials that consist of closely
packed arrays of particles that interact elastically, is a vibrant area of research that combines …

Switches and rectification devices are fundamental componentsused for controlling the flow
of energy in numerous applications. Thermal,,, and acoustic,,, rectifiers have been proposed …

In this paper, elastic wave dispersion characteristics of two novel unit-cells are numerically
and experimentally studied. Based on Bloch's theorem for infinite cellular structures, the …

We demonstrate the utilisation of transition waves for realising input-invariant, frequency-
independent energy harvesting in 1D lattices of bistable elements. We propose a …

We study wave propagation in a chain of spherical particles containing a local resonator.
The resonant particles are made of an aluminum outer spherical shell and a steel inner …

This paper theoretically and numerically investigates a topological interface state in a highly
tunable granular crystal. This system allows us to tune the contact stiffness in a controllable …

Experimental evidence is presented for demonstrating frequency-preserved non-reciprocal
acoustic propagation in a lower frequency range. A 23-bead granular chain and a conical …

This chapter describes the dynamic behavior of nonlinear periodic phononic structures,
along with how such structures can be utilized to affect the propagation of mechanical …

By applying an out-of-phase actuation at the boundaries of a uniform chain of granular
particles, we demonstrate experimentally that time-periodic and spatially localized structures …