Abstract
Amorphous photonic structures with non-iridescent and highly-stable structural color were fabricated via a simple one-step spray-coating technique. With this strategy, the obtained films on textile substrates presented short-ordered and amorphous photonic structures (APSs) similar to the amorphous nanostructures of avian feathers. The structural color presented the same hue when viewed at different angles and could be well controlled by varying the diameters of the SiO2 nanospheres. The prepared fabrics with structural color exhibited high color stability due to stability in both the assembled physical structure and the refractive index. The high stability of the assembled physical structure was attributed to the cementing effect of Poly(methylmethacrylate-butylacrylate) P(MMA-BA) existing between textile substrate and SiO2 nanospheres and among SiO2 nanospheres, while the high stability in the refractive index was contributed by the liquid-resistance achieved by both the surface roughness and the low-surface-energy of the as-sprayed APSs. With the resistances to external forces and liquid invasion, the non-iridescent brilliant structural color of the as-prepared fabrics could be kept steady. In this study, an approach of fabricating APSs with non-iridescent and stable structural color was established to enhance its potential application in structural coloration of textiles, and other color-related smart textiles.
Highlights
Structural color, originating from the interaction of visible light with special nanostructures has attracted great attention owing to its non-photofading and eco-friendly properties [1,2,3]
Light interference and/or diffraction from most periodic nanostructures produce iridescent structural colors due to their anisotropy in modulating the light propagation. These iridescent structural colors result in variable and vivid metallic luster effects when they are used as an alternative to pigmentary colors for anti-counterfeiting [4,5], decorations [6], and cosmetics
The iridescent effect that changes hue when viewed from different angles often restricts the potential application of structural colors in color-related fields, such as textile colorations, electronic displays, and colorimetric sensors
Summary
Structural color, originating from the interaction of visible light with special nanostructures has attracted great attention owing to its non-photofading and eco-friendly properties [1,2,3]. Light interference and/or diffraction from most periodic nanostructures produce iridescent structural colors due to their anisotropy in modulating the light propagation. These iridescent structural colors result in variable and vivid metallic luster effects when they are used as an alternative to pigmentary colors for anti-counterfeiting [4,5], decorations [6], and cosmetics. Fabricating photonic nanostructures with isotropic optical properties has received considerable attention in the functional applications of structural colors. The iridescent effect that changes hue when viewed from different angles often restricts the potential application of structural colors in color-related fields, such as textile colorations, electronic displays, and colorimetric sensors.
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