Invisible inks to guard against counterfeits

Two groups of researchers have recently made important contributions to the arsenal of anti-counterfeit measures. Researchers from China’s Fuzhou University developed a high-tech version of invisible ink that can only be seen with a fluorescence microplate reader. The researchers published their findings in Angewandte Chemie.
Researchers from the University of Zaragoza in Spain demonstrated that transparent ink containing gold, silver and magnetic nanoparticles could be screen-printed onto paper. The nanoparticles are small enough to disappear into the paper’s pores, making them invisible to humans. The scientists published their findings in Nanotechnology (News Item drupa, March 2016).
Click here for the news item.
Click here for an abstract of the article published in Angewandte Chemie.
Click here for the article published in Nanotechnology (3 MB).
Click here for more information about the NVC Project Innovation in Packaging Print.

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