Fig. 3: Optical properties of laser-printed colors on TiAlN–TiN hybrid films.
From: High-speed laser writing of structural colors for full-color inkless printing
a Matrix palettes produced with various pulse energies and scanning speeds. The thickness of TiAlN and TiN are 60 nm and 50 nm, respectively. b, c Seven circles that are independently written. The colors in the overlapping areas are changed, indicating that the colors are rewritable. The scale bars are 5 mm. d Near-normal incidence (6°) reflectance spectra of several representative laser-written colors. e Experimentally measured CIE chromaticity diagram, comparing the colors of pristine bilayer TiAlN–TiN films (stars) and laser-produced colors (circles). f–j Photographs of a laser-written color swatch taken at five titled angles. Source data is available.
