Laser?Empowered Random Metasurfaces for White Light Printed Image Multiplexing

Printed image multiplexing based on the design of metasurfaces has attracted much interest in past decade. Optical switching between different images displayed directly metasurface is performed by altering parameters incident light such as polarization, wavelength, or incidence angle. When using white light, only two-image implemented with polarization switching. Such are made nanostructures perfectly controlled individually, which provide high-resolution pixels but small and involve long fabrication processes. Here, it demonstrated that laser processing nanocomposites offers a versatile low-cost, high-speed method large area capabilities for controlling statistical properties random metasurfaces, allowing up to three-image under illumination. By independently absorption interference effects, colors reflection transmission can be varied yielding light. Using anisotropy plasmonic nanoparticles, third multiplexed revealed through changes. The strategy, fundamental properties, versatility implementation these laser-empowered discussed. technique, applied flexible substrate, find applications information encryption functional switchable optical devices, many advantages visual security anticounterfeiting.