Chinese Journal of Lasers, Volume. 51, Issue 12, 1202203(2024)
Rapid Preparation of Iris and Color Composite Patterns by Laser Direct Writing
Fig. 2. Initial parameters when iris effect appears during laser scanning.(a) At different intervals; (b) at different laser repetition frequencies
Fig. 3. Micrographs under different energy percentages at scanning speed of 400 mm/s, repetition rate of 20 kHz, and scanning interval of 0.02 mm. (a) 55%; (b) 57%; (c) 59%; (d) 61%; (e) 63 %; (f) 65%
Fig. 4. Micrographs under different laser scanning intervals at scanning speed of 400 mm/s, repetition rate of 20 kHz, and energy percentage of 80%. (a) 0.04 mm; (b) 0.05 mm; (c) 0.06 mm; (d) 0.07 mm
Fig. 5. Generation process of iris on stainless steel surface induced by laser. (a)‒(c) Process of laser influence on stainless steel surface; (d) generation principle of iris
Fig. 6. Effect of pattern iris prepared by laser. (a)(b) Vertical iris effects; (c)(d) horizontal iris effects; (e)(f) normal overhead views;
Fig. 7. Laser induced composite structural colors of stainless steel. (a)‒(d) Color produced by oxide film; (e)‒(h) iris structural colors of Fig.7(d) produced at different inclined angles; (i) microstructure of Fig.7(d)
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Di Peng, Dazheng Wang, Guowei Zhang. Rapid Preparation of Iris and Color Composite Patterns by Laser Direct Writing[J]. Chinese Journal of Lasers, 2024, 51(12): 1202203
Category: Laser Surface Machining
Received: Jul. 20, 2023
Accepted: Oct. 10, 2023
Published Online: Feb. 19, 2024
The Author Email: Zhang Guowei (zgw318@tust.edu.cn)