Stable superhydrophobic surface with hierarchical mesh-porous structure fabricated by a femtosecond laser |
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Authors: | Jiale Yong Qing Yang Feng Chen Dongshi Zhang Hao Bian Yan Ou Jinhai Si Guangqing Du Xun Hou |
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Institution: | 1. State Key Laboratory for Manufacturing Systems Engineering & Key Laboratory of Photonics Technology for Information, School of Electronics & Information Engineering, Xi’an Jiaotong University, 710049, Xi’an, Shaanxi, China
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Abstract: | Inspired by the lotus leaf, a new superhydrophobic surface with hierarchical mesh-porous structure is fabricated by femtosecond laser irradiation on silicon. The fabricated surface shows a superhydrophobic character with water contact angle being found to reach up to 158°±1° and sliding angle of 4°±0.5°. The superhydrophobicity is stable even if the PH of solution changes from 1 to 14. And the surface also exhibits excellent self-cleaning effect and bouncing behavior, implying that the adhesion of the surface is extremely low. This work will enhance further understanding of the wettability of a solid surface with special surface morphology. |
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