Pixelated bifunctional metasurface-driven dynamic vectorial holographic color prints for photonic security platform.

ABSTRACT: Vectorial holography has gained a lot of attention due to the promise of versatile polarization control of structured light for enhanced optical security and multi-channel optical communication. Here, we propose a bifunctional metasurface which combines both structural color printing and vectorial holography with eight polarization channels towards advanced encryption applications. The structural colour prints are observed under white light while the polarization encoded holograms are reconstructed under laser illumination. To encode multiple holographic images for different polarization states, a pixelated metasurface is adopted. As a proof-of-concept, we devise an electrically tunable optical security platform incorporated with liquid crystals. The optical security platform is doubly enc

SUBMITTER: Kim I 

PROVIDER: S-EPMC8203667 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature