Researchers have built a new super-small "nanodragster" that improves on prior nanocar designs and could speed up efforts to craft molecular machines.It’s said to be 50,000 times thinner than a single strand of human hair. It is driven using electricity or heat.Spherical molecules called buckyballs made of 60 carbon atoms each serve as the big rear wheels. Due to chemical attractions, these wheels nicely grip the "dragstrip," which is made of a superfine layer of gold rather than pavement. For the front wheels, the scientists opted for a less sticky compound called p-carborane. Surely it looks crappy, more like a diseased octopus rather than any thing else. But imagine the records it’s broken. Smallest wheel-base, most inaccessible, lightest vehicle, etc.
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