Friday, 5 June 2015

"Nano-spirals" could make counterfeiting almost impossible

The nano-spirals emit a very specific optical signature that could be recognized by a barcode reader-like device

Researchers from Vanderbilt University in Nashville, Tennessee have created the world's smallest continuous spirals. Made from gold, the spirals exhibit a set of very specific optical properties that would be difficult to fake, making them ideal for use in identity cards or other items where authenticity is paramount.

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Section: Science

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from Gizmag Emerging Technology Magazine http://ift.tt/1FBLyQf

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