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    Sequential Evolution of Colored Copper Surface Irradiated by Defocused Femtosecond Laser

    Year: 2020

    Journal: Adv. Eng. Mater., Volume 22, OCT

    Authors: Ding, Kaiwen; Li, Ming; Wang, Cong; Lin, Nai; Wang, Haoran; Luo, Zhi; Duan, Ji'an

    Organizations: National Key R&D Program of China [2017YFB1104300]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51975595]; Key Research and Development Program of Shaanxi [2018ZDXM-GY-058]

    Keywords: defocus dependent; femtosecond laser; hydrophobicity; sequential colors

    Herein, an effective method is proposed for the fabrication of sequential colors on copper by adjusting femtosecond laser defocusing distance. The sequential evolution tendency of induced colors by adjusting laser defocusing distance is conducted. It is revealed that such a change of surface optical response is originated from the gradual evolution of three different kinds of structures. The angle-resolved spectrum of the colored surface is investigated. In addition, the simultaneously derived hydrophobicity of the colored surface is explored.
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