Powerful nanoengine built from coated nanoparticles

http://www.foresight.org/nanodot/?p=7083

"The forces exerted by these tiny devices are several orders of magnitude larger than those for any other previously produced device, with a force per unit weight nearly a hundred times better than any motor or muscle. According to the researchers, the devices are also bio-compatible, cost-effective to manufacture, fast to respond, and energy efficient."

Nice!