Movie S4.

Four cogwheel-shaped microrobots (with payloads of one or two 15-μm-diameter polystyrene beads) are simultaneously, repeatedly translated in different directions such that they exchange places (clip 1). Eight cogwheel-shaped microrobots are simultaneously rotated at different angular velocities (clip 2). Four cogwheel-shaped microrobots (with payloads of one, two, or three 15-μm-diameter polystyrene beads) are simultaneously translated in the same direction (clip 3).