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Researchers observed films of chalcogenide glass with gamma-ray-induced defects gradually become whole again over time at room temperature, returning to a state of structural integrity without any other intervention.
"These glasses are seeing more and more use in systems where the community is looking for alternatives to some of the crystalline solutions that have historically been used before."– those that include sulfur, selenium, tellurium, or polonium – interact with light in ways that make them useful for optical devices, especially in the realm of infrared sensing.
We're not exposed to space gamma rays here on Earth's surface, since our atmosphere works as a highly effective shield, but the radioactive decay of certain elemental isotopes can produce gamma radiation. "Because they're big atoms and weak bonds, over time, these bonds can relax back and reform from this distorted arrangement, and therefore heal,"
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