Pearls and bird feathers inspire simpler method for producing structural colors

Summary
Colors in nature are not always produced by pigments. Pearls, bird feathers, butterfly wings and opals display brilliant colors through the interaction of light with microscopic structures, a phenomenon known as structural color.
Description from Phys.
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Pearls and bird feathers inspire simpler method for producing structural colors
Colors in nature are not always produced by pigments. Pearls, bird feathers, butterfly wings and opals display brilliant colors through the interaction of light with microscopic structures, a phenomenon known as structural color.
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