Dynamic contact angle measurements on lubricant infused surfaces

Kim, Do-hyung; Lee, Min-Ki; Kim, Jeonghyun; Lee, Jinkee

doi:10.1016/j.jcis.2020.10.134

Cited by 22 publications

(3 citation statements)

References 55 publications

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“…All coatings infused with PFPE displayed excellent amphiphobicity, as both water and n-hexadecane drops did not stick to these surfaces leading to low contact angle hysteresis values. The increase in CAH observed for PFPE-infused SLIPS from Krytox 100 to 107 has already been reported in the literature [28] and is due to the increasing chain length of PFPE molecules, which leads to higher oil viscosity: the recession of water drops on these surfaces is hindered by pinning of their contact line, thus diminishing drop mobility and receding contact angle [29].…”

Section: Slips Characterizationsupporting

confidence: 65%

Evaluation of the Durability of Slippery, Liquid-Infused Porous Surfaces in Different Aggressive Environments: Influence of the Chemical-Physical Properties of Lubricants

et al. 2021

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Liquid-repellent surfaces have been extensively investigated due to their potential application in several fields. Superhydrophobic surfaces achieve outstanding water repellence, however their limited durability in severe operational conditions hinders their large-scale application. The Slippery, Liquid-Infused Porous Surface (SLIPS) approach solves many of the durability problems shown by superhydrophobic surfaces due to the presence of an infused liquid layer. Moreover, SLIPS show enhanced repellence towards low surface tension liquids that superhydrophobic surfaces cannot repel. In this perspective, SLIPS assume significant potential for application in harsh environments; however, a systematic evaluation of their durability in different conditions is still lacking in the literature. In this work, we report the fabrication of SLIPS based on a ceramic porous layer infused with different lubricants, namely perfluoropolyethers with variable viscosity and n-hexadecane; we investigate the durability of these surfaces by monitoring the evolution of their wetting behavior after exposure to severe environmental conditions like UV irradiation, chemically aggressive solutions (acidic, alkaline, and saline), and abrasion. Chemical composition and viscosity of the infused liquids prove decisive in determining SLIPS durability; especially highly viscous infused liquids deliver enhanced resistance to abrasion stress and chemical attack, making them candidates for applicable, long-lasting liquid-repellent surfaces.

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Section: Slips Characterizationsupporting

confidence: 65%

Evaluation of the Durability of Slippery, Liquid-Infused Porous Surfaces in Different Aggressive Environments: Influence of the Chemical-Physical Properties of Lubricants

et al. 2021

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“…Although the methods of fabrication of SLIPS are beyond the scope of this review, we mention here some articles that interested readers could refer to [9,91,168,221]. Systematic studies of the effect of various system parameters on the wetting behavior of SLIPS, comparatively, remain less reported [63,65,81,86,88,89,169,[222][223][224][225]. A detailed understanding of the mechanisms and pathways of lubricant depletion is fundamental to enhance the durability of the SLIPS.…”

Section: Summary and Future Prospectsmentioning

confidence: 99%

Durability of Slippery Liquid-Infused Surfaces: Challenges and Advances

et al. 2023

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Slippery liquid-infused porous surfaces (SLIPS) have emerged as a unique approach to creating surfaces that can resist fouling when placed in contact with aqueous media, organic fluids, or biological organisms. These surfaces are composed of essentially two components: a liquid lubricant that is locked within the protrusions of a textured solid due to capillarity. Drops, immiscible to the lubricant, exhibit high mobility and very-low-contact-angle hysteresis when placed on such surfaces. Moreover, these surfaces are shown to resist adhesion to a wide range of fluids, can withstand high pressure, and are able to self-clean. Due to these remarkable properties, SLIPS are considered a promising candidate for applications such as designing anti-fouling and anti-corrosion surfaces, drag reduction, and fluid manipulation. These collective properties, however, are only available as long as the lubricant remains infused within the surface protrusions. A number of mechanisms can drive the depletion of the lubricant from the interior of the texture, leading to the loss of functionality of SLIPS. Lubricant depletion is one challenge that is hindering the real-world application of these surfaces. This review mainly focuses on the studies conducted in the context of enhancing the lubricant retention abilities of SLIPS. In addition, a concise introduction of wetting transitions on structured as well as liquid-infused surfaces is given. We also discuss, briefly, the mechanisms that are responsible for lubricant depletion.

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“…In recent years, some applications of superhydrophobic coatings, such as self-cleaning, anti-icing and anti-corrosion properties, have attracted great interest due to wide applications in science and engineering [1,2]. Such water-repellent coatings with static contact angle greater than 150° and low slip angle are highly desirable for anti-corrosion, anti-icing, self-cleaning and anti-slip applications [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Preparation of superhydrophobic coating with excellent abrasion resistance and anti-icing properties using Al2O3/PVDF composites with different Al2O3 particle sizes

Samsun

Alkan

Basaran

et al. 2023

Preprint

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Considering the application areas of ceramic materials (ceramic sinks, toilet bowls, washing areas, ceramic tiles tableware), the demand for improving dirt and water repellent properties is increasing day by day with the perception of hygiene and cleanliness that affects the whole world. In this study, super-hydrophobic solutions were prepared and applied to ceramic substrates by adding alumina particles with different particle size distributions into the polyvinylidene fluoride (PVDF) matrix. Alumina powders added to the PVDF matrix at four different rates to obtain composite materails. Alumina powders with two different particle sizes, coarse and fine, was used and the effect of grain size on the properties was investigated. The adhesion performance of the coatings was determined by brush tests. In addition, surface roughness values, colour variation after coating, and anti-icing performance were also evaluated. It was observed that the coating with the (PVDF:Al2O3) ratio (1:0.25) had the highest contact angle and adhesion property.

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Dynamic contact angle measurements on lubricant infused surfaces

Cited by 22 publications

References 55 publications

Evaluation of the Durability of Slippery, Liquid-Infused Porous Surfaces in Different Aggressive Environments: Influence of the Chemical-Physical Properties of Lubricants

Evaluation of the Durability of Slippery, Liquid-Infused Porous Surfaces in Different Aggressive Environments: Influence of the Chemical-Physical Properties of Lubricants

Durability of Slippery Liquid-Infused Surfaces: Challenges and Advances

Preparation of superhydrophobic coating with excellent abrasion resistance and anti-icing properties using Al2O3/PVDF composites with different Al2O3 particle sizes

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