Abstract
Constructing double-scale structures on material surface is helpful for achieving its superhydrophobicity. Therefore, it is quite necessary to investigate the forming mechanisms of double-scale structures on material surface. In the study, the forming mechanisms of various structures induced by femtosecond laser on the K9 glass surface are discussed, such as crater, ripples, and cones. The surface with double-scale structures is fabricated by femtosecond laser. On the surface, the apparent contact angle and sliding angle of a droplet are 152.3±1.5° and 4.6±0.8°, respectively. Lastly, through theoretical and experimental analyses, we demonstrate that the double-scale structures are effective for realizing superhydrophobicity of material surface and restricting the wetting transition from Cassie mode to Wenzel mode.
Published Version
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