1 Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Central 5-2, Tsukuba 305-8565, Japan. takashi-arimura@aist.go.jp.
In the wake of the Belousov-Zhabotinsky reaction catalyzed by ferroin, the swelling-deswelling oscillating soft actuator exhibits 7 min period of self-oscillation for the first time.