Preparation of hydrophobic surface on steel by patterning using laser ablation process

Luo, Binhui; Shum, P.W.; Zhou, Zhifeng; Li, K.Y.

doi:10.1016/j.surfcoat.2009.10.043

Cited by 74 publications

(30 citation statements)

References 48 publications

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“…Luo et al [18] machined micro-patterns on 316 stainless steel by a short pulse excimer laser, and the contact angle increased from 68.5º to 130º . Chunhong et al [19] investigated surface microstructuring of SiC material using fiber optic laser, and found that contact angle varied from 89.8º to 119º .…”

Section: Introductionmentioning

confidence: 99%

“…Many researches about laser-induced hydrophobic surface have been reported in various literatures [18][19][20], but the specific reason for the change of surface wettability after laser processing has no comprehensive research. In this paper, nanosecond laser is used to fabricate patterned microstructures on the surface of titanium, including line pattern, grid pattern and spot pattern.…”

Section: Introductionmentioning

confidence: 99%

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Modification of wettability property of titanium by laser texturing

Yang

Mei

Tian

et al. 2016

Int J Adv Manuf Technol

112

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Three different microstructures with line pattern, grid pattern and spot pattern were fabricated on titanium surfaces by nanosecond laser. Scanning electron microscopy (SEM), contact angle measurement, surface roughness gauge and X-ray photoelectron spectroscopy (XPS) analysis were used to characterize and measure the surface morphology, contact angle, surface roughness and chemical composition of titanium after laser processing. The results indicate that the contact angle of titanium surface is 77.8º immediately after laser processing, which shows hydrophilicity, and the contact angle presents a rising tendency with time in general. At steady state, the maximum contact angles for line pattern, grid pattern and spot pattern increased to 157.2º , 153º and 132.5º , respectively. It can be found that the surface wettability has changed from hydrophilicity to hydrophobicity and even to superhydrophobicity. The influence of surface morphology on the surface wettability effects immediately after laser treatment and does not change with time, while the effect of surface chemical composition on the surface wettability will continue from the beginning of laser processing to the stabilization of surface chemical composition. Finally, it can be deduced that the accumulation of carbon on the surface is probably the critical factor to improve the surface hydrophobicity. Therefore, it is concluded that laser-induced modification of surface wettability correlates with surface morphology and surface chemical composition.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modification of wettability property of titanium by laser texturing

Yang

Mei

Tian

et al. 2016

Int J Adv Manuf Technol

112

View full text Add to dashboard Cite

show abstract

“…Liquid on a circle-dimpled surface can only spread along the depth direction, whereas on micro-square-convex surfaces, it can infiltrate along the depth direction and also diffuse along the horizontal direction with the grooves. The different diffusion modes on the two textured surfaces lead to the distinct wetting behaviors [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influence of laser geometric morphology type on SiC surface wettability

Wang

Bai

2015

Sci. China Technol. Sci.

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To obtain effective surface morphology to control surface wettability, this work investigated the influence of protuberant and concave morphology, which are respectively represented by circle-dimpled and micro-square-convex morphology, on surface wettability. The geometric morphologies were processed on silicon carbide (SiC) surfaces by a laser-marking machine, and surface wettability was monitored by the measurement of contact angles using the sessile drop method. Correlation analysis between contact angles and morphology parameters was conducted to determine the extent of influence. The results showed that the circle-dimpled diameter had a significant influence on surface wettability, whereas grooved width did not. Additionally, the depth of dimples and grooves exerted less influence on controlling wetting behaviors. In addition, surface wettability transformed from a superhydrophilic state to a hydrophobic state on micro-square-convex surfaces; contact angles on circle-dimpled surfaces showed a relatively slow transformation, though the surface wettability also underwent the state change.circle-dimpled morphology, micro-square-convex morphology, wettability, SiC Citation:Wang R, Bai S X. Influence of laser geometric morphology type on SiC surface wettability.

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“…Physical methods like sand-blasting for removing biofilm on vessel surface or instrument surface require constant management by thinning the thickness of protective coating such as paint on the surface. On the other hand, Wrinkle-like micropatterns formed on the skin surface of the whale or on the shells of many shellfishes and leaves of lotus are effective in preventing the biofilm formation that easily occurs in the underwater environment [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Study on micro fabricated stainless steel surface to anti-biofouling using electrochemical fabrication

Hwang

Lee

2017

Micro and Nano Syst Lett

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Biofilm formed on the surface of the object by the microorganism resulting in fouling organisms. This has led to many problems in daily life, medicine, health and industrial community. In this study, we tried to prevent biofilm formation on the stainless steel (SS304) sheet surface with micro fabricated structure. After then forming the microscale colloid patterns on the surface of stainless steel by using an electrochemical etching forming a pattern by using a FeCl 3 etching was further increase the surface roughness. Culturing the Pseudomonas aeruginosa on the stainless steel fabricated with a micro structure on the surface was observed a relationship between the surface roughness and the biological fouling of the micro structure. As a result, the stainless steel surface with a micro structure was confirmed to be the biological fouling occurs less. We expect to be able to solve the problems caused by biological fouling in various fields such as medicine, engineering, using this research.

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Preparation of hydrophobic surface on steel by patterning using laser ablation process

Cited by 74 publications

References 48 publications

Modification of wettability property of titanium by laser texturing

Modification of wettability property of titanium by laser texturing

Influence of laser geometric morphology type on SiC surface wettability

Study on micro fabricated stainless steel surface to anti-biofouling using electrochemical fabrication

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