Chinese researchers develop colour-shifting electronic skin

From Colour-shifting electronic skin could have wearable tech and prosthetic uses – IOP Publishing

researchers in China have developed a new type of user-interactive electronic skin, with a colour change perceptible to the human eye, and achieved with a much-reduced level of strain. Their results could have applications in robotics, prosthetics and wearable technology.

…the study from Tsinghua University in Beijing, employed flexible electronics made from graphene, in the form of a highly-sensitive resistive strain sensor, combined with a stretchable organic electrochromic device.