Researchers report a simple method to manufacture biocompatible structural colors using only melanin and silica. The silica shell provides a buffer layer of tunable thickness that allows customization of the particular color, offering the potential to fabricate a new breed of long-lasting pigments that don’t fade.
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Researchers at the Weizmann Institute and the Interuniversity Institute for Marine Sciences in Israel are taking a closer look at sea sapphires to figure out the science behind the “magic” of their seemingly instantaneous color changes and invisibility.
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