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 …

Structures with near-zero parameters (for example, media with near-zero relative permittivity
and/or relative permeability, and thus a near-zero refractive index) exhibit a number of …

Acoustic metamaterials can manipulate and control sound waves in ways that are not
possible in conventional materials. Metamaterials with zero, or even negative, refractive …

Acoustics is a classical field of study that has witnessed tremendous developments over the
past 25 years. Driven by the novel acoustic effects underpinned by phononic crystals with …

In the past two decades, the research on acoustic metamaterials has flourished, which is
also benefited from the development of additive manufacturing technology. The exotic …

Double-negative acoustic metamaterials (AMMs) offer the promising ability of superlensing
for applications in ultrasonography, biomedical sensing and nondestructive evaluation …

By studying platonic crystals based on lattices of cavities containing N-beam resonators, we
conclude that crystals made of 1-beam resonators easily produce low-frequency …

Acoustic metamaterial comprising an array of resonators being attached to the side wall of a
rigid duct is investigated in this study. We propose a resonator design by employing a pre …

Through a combination of analytical, numerical, and experimental methods, we study a three-
dimensional metamaterial with the ability to attenuate both airborne sound and mechanical …

Metamaterials, man-made composites that are scaled smaller than the wavelength, have
demonstrated a huge potential for application in acoustics, allowing the production of sub …