In the past decades, many mechanical metamaterials with uncommon static properties have
been reported. On the other hand, mechanical metamaterials possessing extraordinary …

Cellular solids have gained extensive popularity in different areas of engineering due to
their unique physical and mechanical properties. Recent advancements in manufacturing …

Electromagnetic wave multiplexing, especially for that occurring at different incidences
(spatial-frequency multiplexing), is pivotal for ultrathin multifunctional interfaces and high …

Metasurface retroreflectors, which scatter the incident electromagnetic wave back to
incoming direction, have received significant attention due to their compelling advantages of …

Acoustic Luneburg lens (ALL) is a spherically/circularly symmetric gradient refractive index
lens, whose index varies smoothly from the outer surface to the centre. The variation of the …

Acoustic metasurfaces (AMs) used for reflected sound wavefront manipulation are generally
designed based on the generalized Snell's law (GSL) at a single frequency, suffering from …

A 3D-printed gradient-index phononic crystal structure based on air inclusions in a polymer
is introduced to manipulate underwater acoustic waves. The proposed approach enables a …

As engineered electromagnetic covers based on (space-) time modulated metamaterials
and metasurfaces, Doppler cloaks are able to compensate the Doppler effect induced by the …

The phenomenon of retroreflection of light characterized by a single transversely polarized
wave has been extensively explored. However, the phenomenon of retroreflection of a …

Conventional energy sources are continuously depleting, and the world is actively seeking
new green and efficient energy solutions. Enormous amounts of acoustic energy are …