Fabrication of biomimetic anisotropic super-hydrophobic surface with rice leaf-like structures by femtosecond laser

Yang, Liang; Shen, Xiaodong; Qin, Ying-zhi; Liu, Jiquan; Wu, Wenjie; Li, Daoyuan; Du, Jie; Zhang, Bing; Fan, Shuqian

doi:10.1016/j.optmat.2020.110740

Cited by 42 publications

(16 citation statements)

References 29 publications

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“…Using this characteristic of laser etching, superhydrophobic surfaces with excellent anisotropy can be easily prepared (Yong et al, 2014;Fang et al, 2018;Lasagni et al, 2018;Cai et al, 2019;Tuo et al, 2019;Bai et al, 2020;Rong et al, 2021;Yang et al, 2021). In another study, femtosecond laser and picosecond laser were used to construct nanostructures of aluminum, copper, and galvanized steel, respectively, and then aging in vacuum was used to replace low surface energy modification.…”

Section: Laser-etching Methodsmentioning

confidence: 99%

Biomimetic superhydrophobic metal/nonmetal surface manufactured by etching methods: A mini review

Ge-Zhang

Yang

et al. 2022

Front. Bioeng. Biotechnol.

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As an emerging fringe science, bionics integrates the understanding of nature, imitation of nature, and surpassing nature in one aspect, and it organically combines the synergistic complementarity of function and structure–function integrated materials which is of great scientific interest. By imitating the microstructure of a natural biological surface, the bionic superhydrophobic surface prepared by human beings has the properties of self-cleaning, anti-icing, water collection, anti-corrosion and oil–water separation, and the preparation research methods are increasing. The preparation methods of superhydrophobic surface include vapor deposition, etching modification, sol–gel, template, electrostatic spinning, and electrostatic spraying, which can be applied to fields such as medical care, military industry, ship industry, and textile. The etching modification method can directly modify the substrate, so there is no need to worry about the adhesion between the coating and the substrate. The most obvious advantage of this method is that the obtained superhydrophobic surface is integrated with the substrate and has good stability and corrosion resistance. In this article, the different preparation methods of bionic superhydrophobic materials were summarized, especially the etching modification methods, we discussed the detailed classification, advantages, and disadvantages of these methods, and the future development direction of the field was prospected.

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Section: Laser-etching Methodsmentioning

confidence: 99%

Biomimetic superhydrophobic metal/nonmetal surface manufactured by etching methods: A mini review

Ge-Zhang

Yang

et al. 2022

Front. Bioeng. Biotechnol.

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“…machines 2022, 13,937 increase, due to the excessive energy, the micro-scale structure of th showed larger craters and cracks, the surface consistency became poor, a CA all showed a decreasing trend.…”

Section: Surface With Macro-micro Composite Structure By Low Surface ...mentioning

confidence: 99%

“…Materials exhibit different hydrophobic properties in different directions with significant differences in the anisotropic CA. This property is known as anisotropic hydrophobic surfaces [10][11][12][13]. This property is common in biological surface structures.…”

Section: Introductionmentioning

confidence: 99%

Multi-Scale Structure and Directional Hydrophobicity of Titanium Alloy Surface Using Electrical Discharge

Wang

Peng

et al. 2022

Micromachines

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Titanium alloys with special macro-micro composite structures of directional hydrophobicity are difficult to prepare due to poor thermal conductivity and good corrosion resistance, inhibiting the wide engineering applications for aerospace, marine engineering, and biomedicine. To prepare macro-micro composite structures on the surface of titanium alloys and achieve directional hydrophobicity, the sub-millimeter structures with an edge width of 150 μm, a groove width of 250 μm, and a depth of 250 μm were fabricated on the titanium alloy by wire electrical discharge machining (WEDM) technology, and high voltage-induced weak electric arc machining (HV-μEAM) was used to fabricate micro-scale feature size micro-structures on the processed macro-structure edges. The influence of process parameters on the morphology of microstructures was studied experimentally. The smooth surface of the titanium alloy is isotropically hydrophilic, and its contact angle is 68°. After processing the macrostructure on the titanium alloy surface, it shows directional hydrophobicity after being modified by low surface energy materials. The macro-micro composite structure formed by HV-μEAM realizes a directional hydrophobic surface with contact angles (CA) of 140° (parallel direction) and 130° (perpendicular direction), respectively. This surface has been modified with low surface energy to achieve contact angles of 154° and 143°. The results of the abrasion resistance test show that under the load of 100 g, it retains directional hydrophobicity at a friction distance of 700 mm with 600# sandpaper. The existence of the sub-millimeter macrostructure is the reason for the directionality of surface hydrophobicity. The microstructure can realize the transformation of the titanium alloy surface from hydrophilic to hydrophobic. Under the combined effects of the macro and micro composite structure, the surface of the titanium alloy shows obvious directional hydrophobicity.

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“…Accordingly, a hybrid method is proposed based on extrusion compression molding ( Yang et al., 2021 ) and directional stretch demolding for the preparation of tilt micro/nanopillars on PP surfaces with directional water rebound property. Extrusion compression molding is a method that combines melt blending and polymer compression molding.…”

Section: Introductionmentioning

confidence: 99%

Efficient fabrication of tilt micro/nanopillars on polypropylene surface with robust superhydrophobicity for directional water droplet rebound

Du¹,

Wu²,

Li³

et al. 2022

iScience

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Fabrication of biomimetic anisotropic super-hydrophobic surface with rice leaf-like structures by femtosecond laser

Cited by 42 publications

References 29 publications

Biomimetic superhydrophobic metal/nonmetal surface manufactured by etching methods: A mini review

Biomimetic superhydrophobic metal/nonmetal surface manufactured by etching methods: A mini review

Multi-Scale Structure and Directional Hydrophobicity of Titanium Alloy Surface Using Electrical Discharge

Efficient fabrication of tilt micro/nanopillars on polypropylene surface with robust superhydrophobicity for directional water droplet rebound

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