Scientists create colour-changing electronic SKIN

Now, scientists have taken inspiration from such creatures, replicating their colour-changing abilities with artificial electronic skin. Their incredible material could be used in a variety of ways in the future, including in robotics, prosthetics and wearable technology used by armed forces. The material is made from graphene - a form of pure carbon that is 200 times stronger than steel. Two layers of graphene are included - a highly-resistive strain sensor, alongside a stretchable organic electrochromic device (ECD) that changes colour when a current is applied. While other colour-changing materials require enormous strain of 100-500 per cent to change colour, the researchers found that subtle strain - between zero and 10 per cent - was enough to cause an obvious colour change.