Researchers have developed tiny 'Janus balls' that show their colored side under a magnetic field. These microparticles could be useful in inks for anti-counterfeiting tags, which could be verified with an ordinary magnet, the researchers say.
Wednesday, December 16, 2020
Colorful, magnetic Janus balls could help foil counterfeiters (w/video)
Researchers have developed tiny 'Janus balls' that show their colored side under a magnetic field. These microparticles could be useful in inks for anti-counterfeiting tags, which could be verified with an ordinary magnet, the researchers say.
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