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February 5th, 2004

Nanomaterials: Jagged edge

It's highly debatable whether these sharp-toothed ribbons will ever be put to use as blades for nanoscale saws. But the wonder is that they form at all. Made from semiconducting cadmium selenide (CdSe), they have one edge that is atomically smooth whereas the other traces out a sawtooth shape reminiscent of a graph of random noise.

* Nature

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