MANFRED KAGE / SCIENCE PHOTO LIBRARY MANFRED KAGE / SCIENCE PHOTO LIBRARY
Leafcutter ant (Atta cephalotes) holding a micromechanical gear. Coloured scanning electron micrograph (SEM) of an ant with a gear from a micromotor on its leg. Microgears are made by shining a computer-guided laser onto a chemical film. The laser solidifies the film that it moves over, leaving the gears when the liquid film is washed away. Magnification: x30 when printed at 10 centimetres wide.
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