Mechanical metamaterials and phononic crystals enable localizing, focusing, and guiding of
elastic or acoustic waves in various ways. Here, we describe the physical mechanisms …

The advancement in electromagnetic metamaterials, which commenced three decades ago,
experienced a rapid transformation into acoustic and elastic systems in the forms of …

Metamaterials are composed of arrays of subwavelength-sized artificial structures; these
architectures give rise to novel characteristics that can be exploited to manipulate …

Elastic phononic crystals (PnCs) and metamaterials show promising prospects in seismic
wave protection. Hitherto, most existing solutions for this purpose use PnCs' bandgaps …

In this work, solitary wave solutions of particle mechanical metamaterials are studied, in
which the mass-in-mass structure with local resonators is considered. The Hertzian contact …

The applicability of piezoelectric energy harvesting is increasingly investigated in the field of
renewable energy. In improving harvester efficiency, manipulating elastic waves through a …

Locally resonant acoustic materials were proposed to control sound using structures with
feature size orders of magnitude smaller than the acoustic wavelength in air. Millimeter …

We report on experimental high spatial confinement of elastic energy in a silicon phononic
cantilever for which the quality factor of a higher-order flexural resonance is increased by a …