Fig. 1: OET control of micromotors.
From: Reconfigurable multi-component micromachines driven by optoelectronic tweezers
a SEM image of a 200-μm-diameter micro-gear. b 3D schematic structure of a micro-gear prior to release. c Schematic depicting the principle of manipulating a micro-gear in an OET device. d Microscope image of a micro-gear being manipulated in an OET device. e–h Frames from Supplementary Movie 3 illustrating the step-by-step process (represented by orange arrows) of manipulating nine micro-gears such that they can be simultaneously rotated. The red-dashed arrows in (h) indicate that the micro-gears are rotating clockwise at 60°/s in the upper row, counterclockwise at 60°/s in the mid row, and clockwise at 120°/s in the bottom row. This parallel manipulation process requires ~30 s.
