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 …

In solid state physics, a bandgap (BG) refers to a range of energies where no electronic
states can exist. This concept was extended to classical waves, spawning the entire fields of …

Seismic metamaterial (SM) has lately received significant attention in the field of vibration
isolation and dam** due to its wave manipulation and bandgap properties. However, the …

In the last two decades, seismic metamaterials have attracted significant attention of
researchers because of the characteristic of the bandgap which can be used to control …

The study of phononic materials and structures is an emerging discipline that lies at the
crossroads of vibration and acoustics engineering and condensed matter physics. Broadly …

Auxetic materials with negative Poisson's ratio (PR) exhibit superior mechanical properties
with regard to energy absorption, while their potential for surface wave shielding is only in its …

Metamaterials and phononic crystals (PCs) with artificially designed periodic microstructures
have attracted increasing research interests due to their unique properties that cannot be …

Phononic crystals are composite materials made of periodic distributions of inclusions
embedded in a matrix. Due to their periodic structure, these materials may exhibit under …

Phononic crystals are artificial periodic structures that can alter efficiently the flow of sound,
acoustic waves, or elastic waves. They were introduced about twenty years ago and have …

We designed and characterized a two-dimensional, gradient-index phononic crystal (GRIN
PC) to control the propagation of acoustic waves. The GRIN PC was composed of solid …