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 …

Nanophotonics has garnered intensive attention due to its unique capabilities in molding the
flow of light in the subwavelength regime. Metasurfaces (MSs) and photonic integrated …

Metasurfaces can perform high-performance multi-functional integration by manipulating the
abundant physical dimensions of light, demonstrating great potential in high-capacity …

Digital optical holograms can achieve nanometre-scale resolution as a result of recent
advances in metasurface technologies. This has raised hopes for applications in data …

Holography has been identified as a vital platform for three-dimensional displays, optical
encryption, microscopy and artificial intelligence through different physical dimensions …

Meta-holographic encryption is a potentially important technique for information security.
Despite rapid progresses in multi-tasked meta-holograms, the number of information …

Metasurface‐generated holography has emerged as a promising route for fully reproducing
vivid scenes by manipulating the optical properties of light using ultra‐compact devices …

Metasurfaces, which are the two-dimensional counterparts of metamaterials, have
demonstrated unprecedented capabilities to manipulate the wavefront of electromagnetic …

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 …

Allowing subwavelength-scale-digitization of optical wavefronts to achieve complete control
of light at interfaces, metasurfaces are particularly suited for the realization of planar phase …