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## Generating Nano Oscillatory Motion70

Posted by kdawson
from the maybe-you-could-power-an-atomic-clock dept.
KentuckyFC sends us to arxivblog.com, where he summarizes (in prose that is somewhat more twee than we usually encounter in writing about physics) the conversion of a constant force into oscillatory motion on the nano scale. Here is the article preprint. A research group at the University of Wisconsin-Madison has made mushroom-shaped nano-pillars that oscillate in a constant DC field, like metronomes.
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## Generating Nano Oscillatory Motion

• #### Twee (Score:4, Informative)

on Friday August 24, 2007 @04:55PM (#20348635) Journal
Twee: Nausiatingly cute. [worldwidewords.org]
• #### Re:Twee (Score:3, Informative)

on Friday August 24, 2007 @04:59PM (#20348665)
The title is "Invasion of the jivin' nano-shrooms" just to give you a taste of the twee.
• #### Smaller Scale Still (Score:3, Informative)

on Friday August 24, 2007 @05:05PM (#20348719)
Excuse me, but, doesn't this happen on the atomic level? Apply heat, and atoms vibrate.
• #### Re:(YES it is) - Re:NOT a constant force. (Score:3, Informative)

on Friday August 24, 2007 @05:52PM (#20349091) Homepage

It's really no different a concept than seeing a bouncing ball as subject to a constant (gravitational) force, except when it's not, as when the concrete smacks it back upward.

If you have an oscillating body of a given mass, then obviously the net force on the body isn't constant, given F=ma. There's no question about that (though it would certainly be newsworthy if someone discovered that F=ma doesn't hold). The question here is whether the input force is constant. The story is that they've replicated on a nano-scale turning a constant force input into an oscillating net force at the point of interest, something which has apparently not been done before.

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