We used Kerker’s conditions to design broad and dynamic structural colors by metasurface composed of near-zero-loss dielectric material. The colors are modulated by changing unit nanocuboid structures and incident polarization state; this process enables highly-secured dynamic cryptographic nanoprints. We demonstrate cryptographic nanoprints that contains overlapped QR codes which can be decrypted under polarized light of a specific angle.

© 2018 Optical Society of Japan

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