Putting those micro-slaves to work

by Tom Sanders

31 Aug 2006

Japanese researchers have created a first bacteria powered micromotor.

The device is essentially a minuscule (20 micrometres, about one fifth of a human hair) version of a horse mill. The bacteria are locked up in a grove and surrounded by proteins that make them all move in the same direction. This forces them to push against one of six feet sticking into the grove, which is attached to a larger circular device.

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