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Nature 399, 23 (6 May 1999) | doi:10.1038/19866

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Microtechnology:  Laying it on thick

Sarah Tomlin

Using an electrochemical fabrication process (called EFAB), Adam Cohen and a team of engineers at the University of Southern California have made several multi-layered structures, such as the 12-layer nickel chain shown here that has six freely moving links. The chain is not much thicker than a sheet of paper, probably making it the world's thinnest.