Durable self-cleaning antireflective and antifog Al micro-nano structure on glass by laser marker ablation

Cui, Hongtao; Teng, Chao; Zhao, Yuying; Wang, Pengfei; Guo, Yu; Qi, Xiaowen

doi:10.1016/j.optmat.2023.114675

Cited by 5 publications

(1 citation statement)

References 32 publications

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“…Compared to the aforementioned fabrication methods, laser processing is a cost-effective, simple, and efficient alternative. It allows for the precise and complex etching of micro-nanostructures on material surfaces by designing the laser processing path [29][30][31][32][33]. Song et al [34] used nanosecond laser and low surface energy modification to embed a superhydrophilic wedge channel in the superhydrophobic plate to produce a superwetting surface capable of spontaneous directional delivery.…”

Section: Introductionmentioning

confidence: 99%

One-step laser preparation of unidirectional liquid spontaneous transport structures

Zhang,

Wang,

Lian

et al. 2024

Surf. Topogr.: Metrol. Prop.

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The Tilted Wedge Microcavity Array (TWMA) structure of the Nepenthes alata peristome allows for unidirectional fluid transport without any surface energy gradient. However, current methods of creating bionic Nepenthes alata peristome structures have significant improvement room in terms of structural shape, machining efficiency, and cost-effectiveness. To address these issues, in this paper, bionic Nepenthes alata peristome TWMA structures on 7075 aluminium alloy was built via a nanosecond laser with highly efficiency, low cost and flexible processing pattern. A unilateral tilted microcavity structure was fabricated by designing the laser processing path, and at the same time, the samples were tilted to change the angle at which the laser beam hit the working surface. This ensures that the microcavity is machined without destroying the microcavity structure underneath. The variation law of aluminum alloy ablation threshold under the influence of laser incidence angle was studied. The dimensional parameters of the TWMA structure were analysed in relation to laser incidence angle θ, laser processing power P, number of laser scans n, and laser scanning speed V. Additionally, liquid spreading tests were carried out on different surfaces of bionic structures, and the influence of surface wettability on the spreading results was investigated. The results indicate that the ablation threshold decreases initially and then increases with an increase in the laser incidence angle. This reflects the trend of the aluminium alloy absorption rate, which initially increases and then decreases with an increase in the incidence angle. For the prepared TWMA structure, the optimum speed of achieving the unidirectional spreading effect was found to be 2.41 mm/s with a surface contact angle (CA) of 35°. This study presents a low-cost and rapid preparation method for creating liquid unidirectional transport structures without any energy input.

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Section: Introductionmentioning

confidence: 99%

One-step laser preparation of unidirectional liquid spontaneous transport structures

Zhang,

Wang,

Lian

et al. 2024

Surf. Topogr.: Metrol. Prop.

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Flexible, transparent, and durable slippery liquid‐infused porous surface achieved by void‐centered PVDF‐co‐HFP membrane for self‐cleaning antifog coating

Tran,

Nguyen,

Bui

et al. 2024

J of Applied Polymer Sci

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Bioinspired smart surfaces, such as slippery liquid‐infused porous surfaces (SLIPS), have garnered significant attention due to their efficacy in self‐cleaning, antifouling, and antibacterial applications. Despite their advantages, SLIPS exhibit limitations such as compromised transparency, insufficient stability, and limited slippery performance, which have hindered their widespread practical use. To address these challenges, this article proposes a rational design utilizing a void‐centered poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF) membrane for slippery liquid‐infused porous surfaces with exceptional flexibility, transparency, durability, and superior slippery performance. These advancements promise to enhance high‐performance, self‐cleaning, and antifogging coatings. The membranes, featuring large‐area, thickness‐customizable void‐centered PVDF, are fabricated through a two‐step process involving phase separation and selective etching. The utilization of PVDF polymer, which has a refractive index similar to that of silicon‐based lubricant oil, enhances transparency, while macrovoids positioned at the membrane's center, acting as oil reservoirs, improve the stability and performance of the SLIPS surfaces. Experimental findings demonstrate remarkable transparency of up to 93% in the visible light range and a lubricant oil uptake of 2.32 at a porosity of 70%. Moreover, the developed SLIPS exhibit outstanding durability, maintaining slippery performance with sliding angles of <10° following exposure to either 400 consecutive droplets or aging for up to 40 days. This study significantly contributes to the development of future SLIPS, particularly for applications such as antifogging coatings on vehicle glass and solar panels, and self‐cleaning surfaces.

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Laser-Induced Texturing: A sustainable approach to Self-Cleaning Mechanisms in Solar Panel

Rai,

Ishak,

Mohd Halil

et al. 2024

Cleaner Engineering and Technology

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Durable self-cleaning antireflective and antifog Al micro-nano structure on glass by laser marker ablation

Cited by 5 publications

References 32 publications

One-step laser preparation of unidirectional liquid spontaneous transport structures

One-step laser preparation of unidirectional liquid spontaneous transport structures

Flexible, transparent, and durable slippery liquid‐infused porous surface achieved by void‐centered PVDF‐co‐HFP membrane for self‐cleaning antifog coating

Laser-Induced Texturing: A sustainable approach to Self-Cleaning Mechanisms in Solar Panel

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