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Scientists observed a nanoscale crack in platinum self-heal during an experiment, revealing metals' intrinsic ability to repair themselves under stress, which could revolutionize engineering and repair processes. The process occurred at room temperature in a vacuum, suggesting potential for broader applications.
Scientists have observed a metal healing itself for the first time, a phenomenon that could revolutionize engineering. Using a specialized transmission electron microscope technique, researchers witnessed a crack in a 40-nanometer-thick piece of platinum mend itself after about 40 minutes of observation. The process, known as nanocrack healing, occurs when tiny crystalline grains inside metals shift their boundaries in response to stress. The self-healing occurred at room temperature in a vacuum, raising the possibility of its application in conventional metals. The discovery could have significant implications for repairing structures, engines, and other materials.