Wettability Transition for Laser Textured Surfaces: A Comprehensive Review

Ijaola, Ahmed Olanrewaju; Bamidele, Emmanuel Anuoluwa; Akisin, Cletus John; Bello, Idris Temitope; Oyatobo, Abiola Tunde; Abdulkareem, Abdullah; Farayibi, Peter Kayode; Asmatulu, Eylem

doi:10.1016/j.surfin.2020.100802

Cited by 85 publications

(50 citation statements)

References 179 publications

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“…Laser etching can provide dual scale hierarchical structures on such surfaces and induce superhydrophobicity, as described in some recent review papers [22,68]. Moreover, laser-based surface texturing is considered as a precise and flexible method and several examples exist in the literature.…”

Section: Laser Etchingmentioning

confidence: 99%

“…Water control at extreme states (i.e., superhydrophobicity or superhydrophilicity [1]), enables a palette of functionalities, such as self-cleaning, antifogging [2,3], anti-icing [4,5], anti-biofouling [6], high-binding [7], antibacterial activity [8][9][10], chemical shielding [11], drag reduction [12,13], etc. Wetting control has been achieved in a wide range of materials, such as polymers [14,15], metals [16,17], alloys [18], and ceramics using several fabrication methods [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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A Review of Fabrication Methods, Properties and Applications of Superhydrophobic Metals

et al. 2021

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Hydrophobicity and superhydrophobicity with self-cleaning properties are well-known characteristics of several natural surfaces, such as the leaves of the sacred lotus plant (Nelumbo nucifera). To achieve a superhydrophobic state, micro- and nanometer scale topography should be realized on a low surface energy material, or a low surface energy coating should be deposited on top of the micro-nano topography if the material is inherently hydrophilic. Tailoring the surface chemistry and topography to control the wetting properties between extreme wetting states enables a palette of functionalities, such as self-cleaning, antifogging, anti-biofouling etc. A variety of surface topographies have been realized in polymers, ceramics, and metals. Metallic surfaces are particularly important in several engineering applications (e.g., naval, aircrafts, buildings, automobile) and their transformation to superhydrophobic can provide additional functionalities, such as corrosion protection, drag reduction, and anti-icing properties. This review paper focuses on the recent advances on superhydrophobic metals and alloys which can be applicable in real life applications and aims to provide an overview of the most promising methods to achieve sustainable superhydrophobicity.

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Section: Laser Etchingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review of Fabrication Methods, Properties and Applications of Superhydrophobic Metals

et al. 2021

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“…111 Whereas the problem of periodic textures is being utilized by researchers to their advantage to control hydrophobicity of the surface. 114 Laser texturing has been successfully used in various applications such as bearings, 99 piston/cylinder, 81 mechanical seals, 115 friction reduction, 116 biomedical applications, 117 and tribological components. 118 Direct laser interferences patterning (DLIP) has been widely adopted for the last two decades due to the advantage of high processing speeds (close to 1 m 2 /min) and improved quality of surface textures of both micro-nano levels.…”

Section: Laser Texturing (Lt)mentioning

confidence: 99%

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

Singh

Kango

Sharma

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Superamphiphobic (water and oil repellent) surfaces have distinct application areas such as anti-corrosion, anti-friction, anti-icing, self-cleaning, etc. To fabricate these types of surfaces, the base material must have low surface energy and dual-scale roughness (micro and nano levels). The durability of such surfaces is indicated by the duration up to which they remain stable and effective. When mechanical forces interact with these surfaces, it deteriorates the surface integrity and ultimately degrades its superamphiphobic property. Hence, these surfaces have very limited mechanical wear sturdiness and long-term durability. Therefore, in this article, efforts have been made to review the different types of mechanical durability tests performed on superamphiphobic metallic and non-metallic surfaces. Moreover, various kinds of surface texturing techniques in context with durability of such surfaces have been discussed. Finally, from the reported literature, critical conclusions, challenges, and scopes for future work have also been presented.

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“…One possible way in which LST could affect tribological properties is to change wettability of fluid lubricants on the textured surfaces [64,72,73]. In surface science community, surface wettability is often quantified using the contact angle between a small droplet of the target liquid and the solid surface.…”

Section: A Friction Reduction Model Based On Surface Roughness Ratiomentioning

confidence: 99%

“…In its definition, roughness ratio reflects the relative increase of counterface's real fluid-solid interface area from a flat surface when wetted with lubricants. There are quantities of reports in tribology literature that the increased fluid-solid interface area in textured surfaces often lead to increased wettability towards the lubricants [64,72,73]. Based on these observations, the fluid-solid interface area may similarly affect the secondary lubrication mechanism as increased interfacial area tends to retain more lubricants during sliding from increased surface wettability.…”

Section: A Friction Reduction Model Based On Surface Roughness Ratiomentioning

confidence: 99%

A Simple Analysis of Texture-Induced Friction Reduction Based on Surface Roughness Ratio

Xuan

Qiao³

et al. 2021

Tribol Lett

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The effect of surface texture on friction reduction under fluid lubrication has been broadly acknowledged in the tribology community. However, the lack of understanding of the underlying mechanisms remains a challenge for the advancement of textured enhanced lubrication. Numerous models have been proposed, but they are almost all based on the hydrodynamic effect alone and have proven cumbersome, system specific and unreflective of the beneficial secondary lubrication provided by the residual lubricants within the texture. This paper presents a simple analysis of texture induced friction reduction based on the actual liquid-solid interface area and the secondary lubrication hypothesis. A simple model based on the surface roughness ratio (the ratio between the actual and projected solid surface area) of the textured surface was proposed which 1) is simple, intuitive, quantitative and sensitive to texture shape and area fraction; 2) directly reflects proposed secondary lubrication mechanisms; 3) reflects the general data trend in the collected literature. By focusing on the variations of key texture parameters, the proposed model combined with a sampling of independent studies in literature has demonstrated that 1) the effect of increased pit depth-to-diameter ratio (d/D) on friction reduction is most significant between 0.01 and 0.2; 2) further increase in d/D only marginally affects the friction coefficient; 3) texture's area fraction plays a much weaker role than the depth/diameter ratio in friction reduction. By quantitatively isolating the secondary lubrication effects, this model may help to link disparate studies in the literature while providing defensible quantitative insights into texture induced lubrication mechanisms.

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Wettability Transition for Laser Textured Surfaces: A Comprehensive Review

Cited by 85 publications

References 179 publications

A Review of Fabrication Methods, Properties and Applications of Superhydrophobic Metals

A Review of Fabrication Methods, Properties and Applications of Superhydrophobic Metals

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

A Simple Analysis of Texture-Induced Friction Reduction Based on Surface Roughness Ratio

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