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Article: Tense encounters drive a nanomotor.(PHYSICS)(Brief Article)
- Article from:
- Science News
- Article date:
- April 9, 2005
CopyrightCOPYRIGHT 2005 Science Service, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Walking on water is a miracle for people, but it's no sweat for some insects. The key for the bugs is surface tension, the cohesive forces of the liquid's surface molecules that are strong enough to support tiny weights. Now, researchers in California have found a way to exploit the powerful force of surface tension on small scales to make an extraordinarily hardworking nanomotor.
The motor is one of the oddest engines around. Its primary components are two minuscule molten blobs of the metal indium, kept at 400[degrees]C to 500[degrees]C, clinging like dewdrops to a kind of carbon wire known as a nanotube (SN: 9/18/04, p. 180). Roughly 200 nanometers across, the ...
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