Fig. 5. Versatility of optocapillarity-driven programmable reconfiguration.

(a) Photocontrol of four rectangular actuators to assemble into structures like the tetrominoes of the popular video game Tetris. The L and Z-shaped structures have chirality which can be switched from one enantiomer to another by light-driven reconfiguration. The first image shows the tetrominoes of the video game Tetris (Part 1 of Supplementary Movie 7). (b) Photographs showing light-induced reconfiguration of nine rectangular actuators into diverse structures with different patterns. The transformation between any two patterns is achieved by alternative localized irradiation of 450-nm and 360-nm laser as well as modulation of the incident direction of the laser (Supplementary Movie 8). The inset at the top right corner of each photograph schematically indicates the assembled structure. The intensity of the ultraviolet laser and visible laser is 60 mW cm⁻² and 45 mW cm⁻², respectively. The size of the rectangular actuators is 6 mm × 2 mm × 0.03 mm.