Micromachines Are Getting Some Real Muscle
Scientists are making microscopic gears, turbines, and other components of micromachines--tiny motorized systems that might one day be built into semiconductors or placed inside the human body. But many of the efforts involve silicon components so thin they can't generate much torque. Yet, fashioning thicker metal microstructures often requires exotic and expensive equipment--such as X-ray synchrotrons--available only to a few top labs.
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