Researchers at the Institute of Industrial Science, part of The University of Tokyo, and Yokohama City University have introduced novel color-changing organic crystals that spontaneously return to their original shape and hue after being stressed, a property they call superelastochromism. These materials can be used to make sensors for shear forces to monitor locations susceptible to damage.
Click here for original story, Red light for stress: A color-changing organic crystal
Source: Phys.org