KentuckyFC writes "A pendulum converts the constant force of gravity into an oscillation — a useful trick by anyone's standards. But nanotechnologists have yet to match it — they just haven't been able to build nano-oscillators. Now arxivblog.com reports that a group at the University of the Madison have made mushroom-shaped nanopillars that oscillate in a constant DC field, like metronomes." Link to Original Source
Seen on a button at an SF Convention:
Veteran of the Bermuda Triangle Expeditionary Force. 1990-1951.