Answer: non-oscillating Belousov-Zhabotinsky (BZ) gel
Researchers at MIT and the University of Pittsburgh have successfully resuscitated non-oscillating Belousov-Zhabotinsky (BZ) gel through a process akin to the resuscitation of a human heart, according to gizmag.com. By exhibiting a chemical response to a mechanical stimulus (a rare feat for non-living matter), it's thought the material could lead to the development of artificial skin that would enable robots to feel and self-repair.
