[Coco] OT: Nanomotors
tony.schountz at unco.edu
Thu Oct 6 19:43:20 EDT 2005
Of course, the "such beasts" are the nanomotors.
On Oct 6, 2005, at 5:38 PM, Tony Schountz wrote:
> Well, I was reading a paper on the 1918 influenza pandemic in
> today's issue of _Science_ and the article immediately following it
> caught my attention. Apparently, a group from the Netherlands has
> managed to make such beasts that run on chemical energy. Although
> "nanogears" have been made in the past, no one had yet produced
> motors. This, of course, has been one of the limitations in
> producing mobile nanoobjects. It has interesting, and perhaps
> frightful, prospects. Below is the paper's abstract.
> A Reversible, Unidirectional Molecular Rotary Motor Driven by
> Chemical Energy
> Stephen P. Fletcher, Frédéric Dumur, Michael M. Pollard, Ben L.
> Department of Organic and Molecular Inorganic Chemistry, Stratingh
> Institute, University of Groningen, Nijenborgh 4, 9747 AG
> Groningen, Netherlands.
> With the long-term goal of producing nanometer-scale machines, we
> describe here the unidirectional rotary motion of a synthetic
> molecular structure fueled by chemical conversions. The basis of
> the rotation is the movement of a phenyl rotor relative to a
> naphthyl stator about a single bond axle. The sense of rotation is
> governed by the choice of chemical reagents that power the motor
> through four chemically distinct stations. Within the stations, the
> rotor is held in place by structural features that limit the extent
> of the rotor's Brownian motion relative to the stator.
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