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Plastics shine bright to warn of invisible cracks

Microscopic chinks in a material can spread and grow into larger fissures—ones that can split apart the plastics and composites used in airplanes, spacecraft, electronics, sports equipment, and pipes. A new, simple technique uses embedded microcapsules to reveal tiny, invisible cracks in a wide variety of plastics by making the cracks glow (ACS Cent. Sci. […]