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Mimicking bug eyes could brighten reflective signs and clothes
That bright, reflective coating used on road signs, bicycles and clothing are important safety measures at night. Now, inspired by the structure of insect eyes, scientists have developed new materials that could improve the color and effectiveness of these safeguards. Hongta Yang and colleagues turned to the compound eyes of insects for a new way to address these limitations. The color can be adjusted by changing the size of the silica crystals, and brightness can be boosted by adding layers.

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