Invasion of the jivin' nano-shrooms

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."