All-dielectric metamaterials and metasurfaces have been demonstrated as ideal platforms to
manipulate electromagnetic waves and enhance light–matter interaction. Analogous to …

Optically variable devices (OVDs) are in tremendous demand as optical indicators against
the increasing threat of counterfeiting. Conventional OVDs are exposed to the danger of …

The growing interest to develop modern digital displays and colour printing has driven the
advancement of colouration technologies with remarkable speed. In particular, metasurface …

The achievement of structural color has shown advantages in large-gamut, high-saturation,
high-brightness, and high-resolution. While a large number of plasmonic/dielectric …

Deep learning has become the dominant approach in artificial intelligence to solve complex
data-driven problems. Originally applied almost exclusively in computer-science areas such …

Metasurfaces, a two-dimensional (2D) form of metamaterials constituted by planar meta-
atoms, exhibit exotic abilities to tailor electromagnetic (EM) waves freely. Over the past …

Flat optics, realized by the artificially created 2D material platform called optical
metasurfaces, is currently undergoing a science‐to‐technology transition. However,“real …

The coloration of some butterflies, Pachyrhynchus weevils, and many chameleons are
notable examples of natural organisms employing photonic crystals to produce colorful …

Metasurfaces are planar photonic elements composed of subwavelength nanostructures,
which can deeply interact with light and exploit new degrees of freedom (DOF) to manipulate …

Metasurfaces open up new avenues for designing planar optics, enabling compact dynamic
metadevices. Numerous dynamic strategies have been proposed, among which liquid …