Nanosecond laser fabrication of superhydrophobic copper and anti-frost surface on copper

Shu, Yunxiang; Lu, Xiangyou; Liang, Yifei; Su, Wenbo; Gao, Wen; Yao, Jianjie; Niu, Zhuang; Lin, Yen-Hui; Xie, Yahong

doi:10.1016/j.surfcoat.2022.128514

Cited by 29 publications

(7 citation statements)

References 42 publications

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“…The presence of micropores and nanoflakes helped to obtain a rougher surface, which, in interaction with the low free energy obtained during fluorination treatment, enables a better superhydrophobic effect to be obtained. The micro- and nanostructured superhydrophobic surfaces possess better mechanical stability and wear resistance compared to those prepared by other methods [ 30 ]. Compared to chemical methods of preparing superhydrophobic surfaces, the preparation method becomes more environmentally friendly and greener, as well as safer.…”

Section: Resultsmentioning

confidence: 99%

“…Poor mechanical robustness greatly limits the scale of superhydrophobic aluminum surfaces in practical applications, where even slight touch or abrasive forces can damage the surface structure and thus lose hydrophobicity [ 30 ]. Therefore, we investigated the mechanical robustness of the specimens after laser etching + fluorination treatment by abrasion experiments.…”

Section: Resultsmentioning

confidence: 99%

“…However, the superhydrophobic surfaces prepared by the usual methods can have some inherent drawbacks that are not conducive to practical applications. For example, the mechanical resistance of the metal surface after laser processing is low and the hardness can be reduced [ 30 ]. The superhydrophobic coatings obtained by electrostatic spraying become less wear-resistant and the coatings become prone to wear [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

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Robust, Superhydrophobic Aluminum Fins with Excellent Mechanical Durability and Self-Cleaning Ability

Shu

et al. 2023

Micromachines

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The self-cleaning ability of superhydrophobic metal surfaces has attracted extensive attention. The preparation of superhydrophobic material using the coating method is a common processing method. In this experiment, aluminum fins were processed by laser etching and perfluorinated two-step coating. The aluminum surface was modified using a femtosecond laser and 1H,1H,2H,2H- perfluorooctane triethoxysilane (PFOTES). A superhydrophobic aluminum surface with excellent mechanical stability and self-cleaning properties was obtained with the superhydrophobic contact angle (WCA) of 152.8° and the rolling angle (SA) of 0.6°. The results show that the superhydrophobic surface has an excellent cleaning effect compared with an ordinary surface in unit time. Then, a wear resistance test of the superhydrophobic surface was carried out by using the physical wear method. The results show that physical wear had a low influence on the hydrophobic property of the specimen surface. Finally, the Vickers hardness analysis found that the superhydrophobic surface hardness was significantly better than the ordinary surface hardness compared with the superhydrophobic surface hardness. Based on the excellent self-cleaning properties, wear resistance, and robustness of superhydrophobic materials, the laser-etched and perfluorinated superhydrophobic aluminum fins designed and manufactured in this study have broad application prospects in improving the heat transfer efficiency of finned heat exchangers.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Robust, Superhydrophobic Aluminum Fins with Excellent Mechanical Durability and Self-Cleaning Ability

Shu

et al. 2023

Micromachines

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“…In the recent decade, researchers have developed many methods to design superhydrophobic surfaces with excellent water-repellency properties including, sol-gel, hydrothermal, anodization, etching, lithographic, spraycoating, laser, and electrospinning. [13][14][15][16][17][18][19][20] Although artificial superhydrophobic surfaces have made significant strides, there are still two critical issues that need to be overcome before these surfaces may be effectively used in the real world. First is the use of the environmentally friendly method (green technique) for the fabrication of large-scale superhydrophobic surfaces.…”

Section: Introductionmentioning

confidence: 99%

A highly robust, non‐fluorinated, and economical PDMS‐based superhydrophobic flexible surface with repairable and flame‐retardant properties

Barthwal

2023

J of Applied Polymer Sci

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Nature-inspired artificial superhydrophobic surfaces have attracted tremendous attention due to their potential applications in various fields. However, the use of toxic chemicals and expensive nanoparticles with limited durability has restricted the practical applications of these surfaces. Here, we proposed a novel and non-fluorinated technique to fabricate robust and flexible polydimethylsiloxane (PDMS)-based superhydrophobic surface. Fabrication involved two simple steps: preparation of superhydrophobic nanoparticles by burning PDMS, and fabrication of flexible superhydrophobic PDMS surface (SPS) by dispersing particles in a solvent containing PDMS solution and curing agent. Effect of PDMS particle content on morphology and wettability was examined and 10 wt.% PDMS nanoparticles demonstrated superior superhydrophobicity with a water contact angle of 156 and sliding angle of $6 . The SPS displayed excellent mechanical robustness in a sandpaper abrasion test and showed no apparent wettability deterioration even when stretched by up to 50%. Additionally, surface maintained outstanding superhydrophobicity even after 300 cycles of mechanical deformation. Impressively, damaged surface can restore its superhydrophobicity after removing the damaged layer using sandpaper abrasion and displayed exceptional chemical, thermal, flame-retardant, and long-lasting superhydrophobic properties. The work provides an innovative, low-cost, and environment-friendly strategy for designing robust and flexible superhydrophobic surfaces that can be used in real-life applications.

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“…The surface with water contact angle more than 150°can be realized by adjusting the surface structure and surface energy. 11 Currently, a large number of superhydrophobic materials have been prepared on different substrates by chemical electrospinning, 12 laser etching, [13][14][15] electrochemical treatment, 16,17 physical or chemical deposition, 18,19 and self-assembly 20,21 to get superhydrophobic wettability. T. P. Manoj et al 22 fabricated a superhydrophobic surface by changing the etching time of titanium alloy in acid, the coating exhibits a maximum WCA of 162.3°± 1°with a sliding angle of 1°.…”

Section: Introductionmentioning

confidence: 99%

Preparation of SiO₂ resin coating with superhydrophobic wettability and anti-icing behavior analysis

et al. 2022

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Nanosecond laser fabrication of superhydrophobic copper and anti-frost surface on copper

Cited by 29 publications

References 42 publications

Robust, Superhydrophobic Aluminum Fins with Excellent Mechanical Durability and Self-Cleaning Ability

Robust, Superhydrophobic Aluminum Fins with Excellent Mechanical Durability and Self-Cleaning Ability

A highly robust, non‐fluorinated, and economical PDMS‐based superhydrophobic flexible surface with repairable and flame‐retardant properties

Preparation of SiO₂ resin coating with superhydrophobic wettability and anti-icing behavior analysis

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Nanosecond laser fabrication of superhydrophobic copper and anti-frost surface on copper

Cited by 29 publications

References 42 publications

Robust, Superhydrophobic Aluminum Fins with Excellent Mechanical Durability and Self-Cleaning Ability

Robust, Superhydrophobic Aluminum Fins with Excellent Mechanical Durability and Self-Cleaning Ability

A highly robust, non‐fluorinated, and economical PDMS‐based superhydrophobic flexible surface with repairable and flame‐retardant properties

Preparation of SiO2 resin coating with superhydrophobic wettability and anti-icing behavior analysis

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Preparation of SiO₂ resin coating with superhydrophobic wettability and anti-icing behavior analysis