Wednesday, April 20, 2011

‘Wedding rings’ made out of DNA

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By Alan Boyle

Thorsten Schmidt can now say he had a hand in creating the world’s smallest wedding rings, measuring less than a thousandth of the width of a human hair. The interlocked rings, known as catenans (after the Latin word for “chain”), were made from looped strands of DNA and measure just 18 nanometers wide. The wedding angle comes about not only because of the rings’ perfectly circular shape, but also because Schmidt got married while he was working on the

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