When the material sustains damage, such as a tear, an infrared laser transmits light through the fiber-optic network, delivering thermal energy to the trouble-spot. That triggers the shape-memory polymers, which are programmed to toughen up to 11 times. The shape-memory effect can also close up a crack or tear, regaining an unheard of 96 percent of the material's original strength. Moreover, the material can self-heal while it is in operation – whatever that operation may be.