Indian-led MIT team makes 3D printed colour-changing 'skin'
An MIT team led by Indian researcher Subramanian Sundaram has 3-D printed a device that responds to mechanical stresses by changing the colour of some spots on its surface. A flexible electronic circuitry was printed on a T-shaped plastic substrate. The circuitry changes colour when the plastic crossbars are stretched, which could be used for 3-D printing robots, said Sundaram.