Laser Fabrication of Nanostructures on a Pure Aluminum Surface in Air |
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Authors: | Haifeng Yang Haidong He Enlan Zhao Jiguo Qian Jingbin Hao Wei Tang Hua Zhu |
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Affiliation: | 1. College of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, 221116, China
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Abstract: | We report on the fabrication of surface nanoparticles and micro/nanograting structures on bulk pure aluminum in air using a 150 fs, 775 nm femtosecond laser. We investigate the size of the generated surface nanoparticles under irradiation with different femtosecond laser pulses. Smaller nanoparticles can be induced by a larger number of laser pulses and a lower laser fluence. In addition, we observe the formation of micro/nanogratings when the laser focus is scanned across a pure aluminum surface in air. We obtain micro- and nano-grating composite structures on a pure aluminum surface by adjusting the laser fluence and scan velocity. Femtosecond laser surface ablation of bulk pure aluminum in air is potentially a promising technique for efficient fabrication of surface nanostructures. |
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