Laser & Optoelectronics Progress, Volume. 57, Issue 11, 111423(2020)
Laser Induced Periodic Nanostructure Pattern and Coloring on Free-Form Surface
In this paper, periodic subwavelength ripples were fabricated on the plane and free-form surface by using nanosecond laser with wavelength of 532 nm and pulse width of 90 ns, precise five-axis motion system, and self-developed computer-aided manufacturing (CAM) program. The effects of laser fluence and scanning rate on the formation of ripples were studied. The results show that the best ripples are formed when fluence F is 7.52 J/cm 2 and scanning rate v is 7 mm/s. Combined with a laser polarization control device, a synchronous polarization control technology was developed to achieve synchronous control of the laser polarization direction, so as to achieve precise control of ripple direction. At the same time, the effect of ripple direction on the coloring effect was studied. Furthermore, a bright color pattern with clear outer contour can be obtained on a stainless steel plate, which further realizes the preparation of complex patterns on curved surfaces.
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Chaopeng Feng, Ke Cheng, Kaiqiang Cao, Long Chen, Yuchan Zhang, Tianqing Jia. Laser Induced Periodic Nanostructure Pattern and Coloring on Free-Form Surface[J]. Laser & Optoelectronics Progress, 2020, 57(11): 111423
Category: Lasers and Laser Optics
Received: Nov. 27, 2019
Accepted: Jan. 17, 2020
Published Online: Jun. 2, 2020
The Author Email: Jia Tianqing (tqjia@phy.ecnu.edu.cn)