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<p>A simple and fast one-step process for fabricating superhydrophobic surfaces was developed that uses nanosecond laser beam machining under silicone oil without any additional post-processing. The need for this research arises from the challenge of rapidly and reliably fabricating superhydrophobic surfaces, which have numerous applications, including self-cleaning, water collection, antibacterial purposes, anticorrosion, and oil–water separation. Experiments were performed to investigate the effects of silicone oil and laser parameters on surface wettability. The results showed that a given laser power required a certain silicone oil height for a superhydrophobic surface to be fabricated. At a scan speed of 10&#xa0;mm/s, and step size of 100&#xa0;µm, superhydrophobic surfaces were achieved with a laser power of 5–10 W and silicone oil height of 0.5–1&#xa0;mm. The developed process can be used to fabricate superhydrophobic surfaces on various metals and ceramics, such as titanium, copper, stainless steel, aluminum, glass, and sapphire.</p>

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One-Step Process for Fabricating Superhydrophobic Surfaces on Metals and Ceramics

  • 期刊论文

  • 发表日期：

    2025年4月19日

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  • The-Hung Dinh,
  • Doo-Man Chun

摘要

A simple and fast one-step process for fabricating superhydrophobic surfaces was developed that uses nanosecond laser beam machining under silicone oil without any additional post-processing. The need for this research arises from the challenge of rapidly and reliably fabricating superhydrophobic surfaces, which have numerous applications, including self-cleaning, water collection, antibacterial purposes, anticorrosion, and oil–water separation. Experiments were performed to investigate the effects of silicone oil and laser parameters on surface wettability. The results showed that a given laser power required a certain silicone oil height for a superhydrophobic surface to be fabricated. At a scan speed of 10 mm/s, and step size of 100 µm, superhydrophobic surfaces were achieved with a laser power of 5–10 W and silicone oil height of 0.5–1 mm. The developed process can be used to fabricate superhydrophobic surfaces on various metals and ceramics, such as titanium, copper, stainless steel, aluminum, glass, and sapphire.