Optical Security Feature (IMAGE)

Optica

Optical Security Feature

Caption

Researchers developed a two-part security feature that allows dynamic and reversible decryption. The figure illustrates an encrypted star pattern generated by raising the dielectric SiO2 layer by 10 nm. The star pattern is revealed when a thin-metal-coated elastomeric (PDMS) patch is applied. The star is 1 cm wide.

Credit

Gokhan Bakan, University of Manchester

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