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 …

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

The effective operation of certain electronic, medical, industrial, and testing equipment relies
on high-quality focusing and imaging capability, which also plays a vital role in the field of …

Initially proposed to achieve strong noise isolation levels beyond the mass-density law,
acoustic metamaterials (AMMs) have now overturned the conventional views in all aspects …

In this letter, an elastic metamaterial which exhibits simultaneously negative effective mass
density and bulk modulus is presented with a single unit structure made of solid materials …

To protect civil structures from seismic damage, metasurfaces have been designed to control
the propagation of Rayleigh wave along the free surface of an elastic half-space. The …

Acoustic and elastic metamaterials are media with a subwavelength structure that behave as
effective materials displaying atypical effective dynamic properties. These material systems …

Metamaterials are artificial composite materials engineered to have properties that may not
be found in nature. By exploring locally resonant effect of the building units, elastic …

Manipulating acoustic waves beyond the diffraction limit offers alternative possibilities to
many applications in wave physics. Here, we show that a gradient-index acoustic …

Metamaterials have demonstrated the possibility to produce super-resolved images by
restoring propagative and evanescent waves. However, for efficient information transfer, for …