Researchers at the University of Gothenburg have made light-powered gears on a micrometer scale. This paves the way for the smallest on-chip motors in history, which can fit inside a strand of hair.
When the RepRap project was started in 2005 by [Dr Adrian Bowyer], the goal was to develop low-cost 3D printers, capable of printing most of their own components. The project slipped into a bit of a ...
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