Invisible Anti-Counterfeit Labels Make Forgery Very Difficult
With a laser, the Russian scientists add ions of a rare-earth metal called erbium that create a unique image on a sticker made of a silicone nanofilm.
(Picture: Dmitry Lisovsky )
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/cdn4.vogel.de/infinity/white.jpg "With a laser, the Russian scientists add ions of a rare-earth metal called erbium that create a unique image on a sticker made of a silicone nanofilm.")
