Chemical robots -design of active soft materials

Here, we introduce autonomous gel actuators driven by the chemical energy. The polymer gels prepared here have cyclic chemical reaction networks. With a cyclic reaction, the polymer gels generate periodical motion. The periodic motion of the gel is produced by the chemical energy of the oscillatory Belouzov-Zhabotinsky (BZ) reaction. We have succeeded in making the synthetic polymer gel move autonomously like a living organism. This experimental fact represents the great possibility of the chemical robot.