Scientists Build the World's Tiniest Rotary MotorPopular MechanicsThey're currently developing the nano-sized equivalents of all the tools you'd find in an engineer's toolbox, including hinges, clamps and bearings. Today's rotary motor, with an axle bearing case that clicks together, is easily "the most complex …
Source: Scientists Build the World's Tiniest Rotary Motor – Popular Mechanics
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