Diffusion driven by temperature or concentration gradients is a fundamental mechanism of
energy and mass transport that inherently differs from wave propagation in both physical …

Diffusion and wave propagation are both fundamental transport mechanisms, but they have
intrinsically different dynamics, governing equations, and applications. Over the past …

Acoustic metamaterials (AMs), which are materials composed of subwavelength periodic
artificial structures with specific designs, have drawn significant research attention. This is …

As a new kind of artificial material developed in recent decades, metamaterials exhibit novel
performance and the promising application potentials in the field of practical engineering …

Mechanical metamaterials, also known as architected materials, are rationally designed
composites, aiming at elastic behaviors and effective mechanical properties beyond ('meta') …

The original Kerker effect was introduced for a hypothetical magnetic sphere, and initially it
did not attract much attention due to a lack of magnetic materials required. Rejuvenated by …

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 …

The phonon is the physical particle representing mechanical vibration and is responsible for
the transmission of everyday sound and heat. Understanding and controlling the phononic …

Recently, with advances in acoustic metamaterial science, the possibility of sound
attenuation using subwavelength structures, while maintaining permeability to air, has been …

Metamaterials are rationally designed man-made structures composed of functional building
blocks that are densely packed into an effective (crystalline) material. While metamaterials …