Fig. 1. Laser scanning process

Fig. 2. Chromatic block diagrams under varying scanning velocities and power percentages, with a focal length of 156 mm, a scanning interval of 0.07 mm, and a Q-frequency of 20 kHz

Fig. 3. Micrographs and macroscopic color images under varying scanning intervals, with a scanning velocity of 100 mm/s, repetition frequency of 20 kHz, and power percentage of 54%. (a) 0.02 mm; (b) 0.05 mm; (c) 0.07 mm; (d) 0.10 mm; (e) macroscopic pictures of colors

Fig. 4. Optical micrographs and color macrographs at varying power percentages, with a scanning velocity of 100 mm/s, repetition rate of 20 kHz, and scanning interval of 0.05 mm. (a) 46%; (b) 50%; (c) 54%; (d) 58%; (e) 62%; (f) 66%; (g) macroscopic pictures of colors

Fig. 5. Cat paw diagrams marked with four color arrays. (a) Small size of cat paw; (b) large size of cat claw

Fig. 6. Colorful peacock pattern marked by laser and its microscopic map. (a) Peacock pattern; (b) microscopic map of feather details

Fig. 7. Reflectance spectra of structural colors

Fig. 8. SEM image of the yellow sample surface

Fig. 9. EDS image of the yellow sample surface