Issue Date: April 21, 2014
Tiny Tags To Fight Fakes
Pharmaceuticals, electronics, and currency all have this in common: Counterfeiters make their ill-gotten gains by faking them. Patrick S. Doyle and coworkers at MIT have come up with a way to thwart counterfeiters by creating microparticle tags that could help verify the authenticity of goods (Nat. Mater. 2014, DOI: 10.1038/nmat3938). Each tag is about 200 μm long and made of colored stripes that . . .
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