A polymer-dispersed liquid crystal layer thermally hides a QR code printed on a metal-insulator-metal-insulator nanocavity, creating a two-level flexible anti-counterfeiting tag.
Features, identity, tracing, and cryptography in product authentication
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Anti-counterfeiting tags with camouflaged QR codes on nanocavities, using polymer-dispersed-liquid-crystals
A polymer-dispersed liquid crystal layer thermally hides a QR code printed on a metal-insulator-metal-insulator nanocavity, creating a two-level flexible anti-counterfeiting tag.