Rice leaf inspired anisotropic wettability surface based on femtosecond laser direct writing

Zhenkai Zhu; Zhihao Chen; Hongbing Yuan; Peichao Wu; Chongbin Chen; Wenwu Zhang

doi:10.1117/12.2691250

16 October 2023 Rice leaf inspired anisotropic wettability surface based on femtosecond laser direct writing

Zhenkai Zhu, Zhihao Chen, Hongbing Yuan, Peichao Wu, Chongbin Chen, Wenwu Zhang

Proceedings Volume 12792, Eighteenth National Conference on Laser Technology and Optoelectronics; 127921C (2023) https://doi.org/10.1117/12.2691250
Event: Eighteenth National Conference on Laser Technology and Optoelectronics, 2023, Shanghai, China

Abstract

Glass fiber reinforced composite material (GFRP) is a functional material made of glass fiber as reinforcing material and synthetic resin as matrix material. GFRP has the advantages of high strength, fatigue resistance, corrosion resistance, etc., and is widely used in various industrial fields. However, the surface of GFRP is hydrophilic and easily wetted by water, which sometimes limits the practical application of GFRP. In this paper, we propose a method to prepare superhydrophobic GFRP surfaces using femtosecond laser direct writing combined with fluorosilane modification. By optimizing the laser parameters, the prepared superhydrophobic GFRP surface shows groove structures with a period of 25 μm and a depth of 40 μm. The surface possesses good superhydrophobicity and anisotropy wettability. In the vertical groove direction the contact angle is 158.7° and the sliding angle is 7.3° . In the parallel groove direction, the contact angle is 160.4° and the sliding angle is 5.0°.

Citation Download Citation

Zhenkai Zhu, Zhihao Chen, Hongbing Yuan, Peichao Wu, Chongbin Chen, and Wenwu Zhang "Rice leaf inspired anisotropic wettability surface based on femtosecond laser direct writing", Proc. SPIE 12792, Eighteenth National Conference on Laser Technology and Optoelectronics, 127921C (16 October 2023); https://doi.org/10.1117/12.2691250

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