Structural color printing with a dielectric layer coated on a nanotextured metal substrate: simulation and experiment

Abstract

Vivid structural colors are produced by texturing the surface of stainless steel and coating it with a dielectric layer.

Extremely‐Fine Color Printing by 2D Materials with the Synergetic Effects of Fabry–Pérot Cavity and Exciton Absorption

“…[8][9][10][11][12] Structural colors based on metallic, dielectric nanostructures have been realized by adjusting the parameters of periodic nanoresonators, such as periodicity, shape, position, size, composition, and ambient environments due to surface plasma resonance or dielectric Mie resonance effects. [3,5,9,[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] The high color resolution, which makes multiple colors be simultaneously stored in microarea as well as increases optical information channels by spectral coding, is a key factor in the realization of noble optical engineering, such as high-quality printing, high-density optical encryption, and encoding. The improvement in color resolution depends on the precise control of optical resonance peak which generates a specific wavelength color.…”

“…Nevertheless, the limited geometry parameter adjustments of the nanoresonators by lithography technique results in a finite color resolution. [16,[28][29][30] For example, the magnetic-resonance reflections of the cross-shaped Si nanoresonators redshift with an average of 30.1 nm with an increasement of 8 nm width and 15 nm length, and the points on the CIE 1931 xy chromaticity diagram converted from reflection spectra show average steps of 0.0664 and 0.1062 along x axis and y axis. [31] Average steps of 0.0210 and 0.0239 along x axis and y axis in the CIE 1931 color space were reported by using metal Cr-masked Si nanopatch arrays with an increasement of 5 nm in diameter, approaching to the limit of lithography technique.…”