Structural color is a more durable and less hazardous alternative to conventional pigments, but the angle-dependence of the color limits its broader application in synthetic systems. Researchers at ETH Zurich proposed a 3D printing process to create complex-shaped objects with angle-independent “isotropic” structural color generated from photonic colloidal glasses.
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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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