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Flowering plants have evolved their structural coloration strategies exquisitely to split various vivid colors into a spatially distributed sequence by using the 2D diffraction elements, confined onto a curved surface. Herein, A new strategy of artificially mimicking floral-inspired grating diffractive motifs onto the monodisperse and smooth microspheres is reported, developed by microfluidics; thus, the accessible design space of structural colorization can be greatly expanded.

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