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Electromagnetic miniatures

rates magnetic fields of up to 2.8 mT within the central channel.

It was also possible to steer magnetic spheres through the channel: the scientists again made a channel with parallel wires on either side, but this time the channel forked after a few millimeters. A suspension of magnetic spheres flowed through the channel. If current was allowed to flow through wire on the right, the spheres flowed to the right as they reached the fork, and vice versa.


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Contact: George M. Whitesides
gwhitesides@gmwgroup.harvard.edu
617-495-9430
John Wiley & Sons, Inc.
6-Oct-2006


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