Architecture of the proposed compact twisted meta-device for frequency-reconfigurable holography. The meta-device integrates cascaded radiation-type metasurfaces (RA-M) with phase-only metasurfaces (P ...

Schematic illustration of a dynamic multifunctional metasurface based on Miura-ori. The reconfigurable origami metasurface enables the display or concealment of image information for dynamic display ...

A chip smaller than one square millimeter stores 160 holographic images at arbitrary 3D coordinates, with each spatial location functioning as an encryption key. (Nanowerk Spotlight) Most storage ...

Layered metasurfaces trained as optical neural networks enable multifunctional holograms and security features, integrating neural computation principles with nanostructured optics to create a ...

Metamaterials are an exciting development in materials science with their remarkable mechanical, electromagnetic, and optical properties. They differ from ordinary materials in that their qualities ...