The super-hydrophobic copper surface was obtained by using a nanosecond pulsed laser. Different micro- and nano-structures were fabricated by changing the laser scanning interval and scanning speed, before heating in an electric heater at 150 °C for two hours to explore the effect of laser parameters and heat treatment on the wettability of the copper surface. It was found that the laser-treated copper surface is super-hydrophilic, and then, after the heat treatment, the surface switches to hydrophobic or even super-hydrophobic. The best super-hydrophobic surface’s apparent contact angle (APCA) was 155.6°, and the water sliding angle (WSA) was 4°. Super-hydrophobic copper is corrosion-resistant, self-cleaning, and dust-proof, and can be widely used in various mechanical devices.

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superhydrophobic surface8217s apparent contact angle laser scanning interval treatment wettability copper mechanical devices speed nanosecond pulsed water sliding angle heater

Linxu Ma,Lina Wang,Chengying Li,Jian Guo,Pranav Shrotriya,Cui Deng,Jingnan Zhao,.Hybrid Nanosecond Laser Processing and Heat Treatment for Rapid Preparation of Super-Hydrophobic Copper Surface. 9 (6),.

Linxu Ma,Lina Wang,Chengying Li,Jian Guo,Pranav Shrotriya,Cui Deng,Jingnan Zhao,"Hybrid Nanosecond Laser Processing and Heat Treatment for Rapid Preparation of Super-Hydrophobic Copper Surface" 9

Linxu Ma,Lina Wang,Chengying Li,Jian Guo,Pranav Shrotriya,Cui Deng,Jingnan Zhao,"Hybrid Nanosecond Laser Processing and Heat Treatment for Rapid Preparation of Super-Hydrophobic Copper Surface"