Scanning electron micrograph of a micromotor gear

Scanning electron micrograph of a micromotor gear

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This image is part of the feature Microengine Turns Gears, Operates Shutter

Credit: SANDIA NATIONAL LABORATORIES/SCIENCE PHOTO LIBRARY

Caption: Micromotor. Coloured scanning electron micrograph of the drive gear (orange) in a micromotor. This gear is smaller in diameter than a human hair and 100 times thinner than a sheet of paper. Driven by two microengines (not visible), it turns a larger gear (green, lower right) through one revolution per second. The whole device was etched into the surface of a wafer of silicon by the same techniques used to make silicon chips. Micromotors could one day be used in a range of exotic "nanotechnology" applications, such as microscopic electric drug pumps implanted in the human body. Magnification: x660 at 5x7cm size. Magnification: x2200 at 10x8 inch size.

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Keywords: gears, high-tech, mechanical, micro, micromechanic, micromechanical, micromechanics, micromotor, motor, nano, nanotechnology, scanning electron micrograph, sem, technology

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