Robust superhydrophobicity: mechanisms and strategies

Zhang, Wenluan; Wang, Dehui; Sun, Zhengnan; Song, Jianing; Deng, Xu

doi:10.1039/d0cs00751j

Cited by 417 publications

(236 citation statements)

References 329 publications

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“…More attention should be paid to the realization of completely stable superamphiphobic surfaces with no adhesion to drops. [ 131,136,264–266 ] Second, although ordered colloidal assemblies have been obtained using superhydrophilic substrates, they commonly suffer from cracking. Despite the abundance of methods developed to resolve this problem, cracking still hinders the practical applications of colloidal assembly systems.…”

Section: Discussionmentioning

confidence: 99%

Functional Colloidal Assemblies Based on Superwettable Substrates

Zhang

Wang

Jiang

2021

Part & Part Syst Charact

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Colloidal assembly, which finds numerous applications in functional optics, sensing materials, and other fields, is significantly affected by substrate wettability. In particular, the pinning or sliding of the three‐phase contact line (TCL) strongly influences the assembly process and the resultant functional structures. The present review focuses on this influence and provides a reference for effective colloidal assembly guidance to facilitate the related practical applications, covering the continuous and high‐quality colloidal crystals (CCs) fabricated using superhydrophilic substrates, coffee‐ring‐like assemblies produced using hydrophilic substrates, crack‐free and ultranarrow stopband CCs produced using low‐adhesive superhydrophobic substrates, dome‐like aggregates with excellent wide‐view properties obtained using hydrophobic substrates, and multi‐functional patterns assembled using substrates with hydrophilic‐hydrophobic patterns.

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Section: Discussionmentioning

confidence: 99%

Functional Colloidal Assemblies Based on Superwettable Substrates

Zhang

Wang

Jiang

2021

Part & Part Syst Charact

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“…However, it appears di cult to mutually achieve all these features in one design. First, from the structure perspective, achieving ideal superhydrophobicity generally requires the design of micro/nanostructures, which, on the other hand, are susceptible to external dynamic mechanical load (e.g., crush and abrasion) owing to mechanical stress concentration 20,21 . Second, to obtain a high adhesion with underlying substrates, the coating should be equipped with su cient polar building blocks, while increasing the polarity inevitably compromises surface hydrophobicity 22 .…”

Section: Full Textmentioning

confidence: 99%

“…In spite of extensive progress, practical implementations of superhydrophobic coatings with preferred functionalities and durability for energy saving dictate a wide-spectrum robustness including mechanochemical strength, high adhesion with substrates, and ame resistance, a challenge remaining unsolved to date.However, it appears di cult to mutually achieve all these features in one design. First, from the structure perspective, achieving ideal superhydrophobicity generally requires the design of micro/nanostructures, which, on the other hand, are susceptible to external dynamic mechanical load (e.g., crush and abrasion) owing to mechanical stress concentration 20,21 . Second, to obtain a high adhesion with underlying substrates, the coating should be equipped with su cient polar building blocks, while increasing the polarity inevitably compromises surface hydrophobicity 22 .…”

mentioning

confidence: 99%

Skin-inspired scalable superhydrophobic coatings with strong mechano-chemical-thermal robustness

Zhang

et al. 2022

Preprint

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Designing environment-friendly, scalable superhydrophobic coatings with a wide spectrum of robustness in mechanochemical strength, interfacial adhesion, and flame retardancy is critical to low-carbon economy and green environment, especially for green buildings. Simultaneously achieving these preferred functionalities dominated by either interfacial or bulky properties has proved challenging. Herein, we propose an integral skin-inspired triple-layered coating (STC) that resolves conflicting demands imposed by individual features on the structure, component, and thermal property of materials. The STC demonstrates sustained anti-wetting and anti-corrosion even under harsh environments, strong adhesion and anti-abrasion, and excellent flame retardancy, all of which enhance its durability and lifetime so as to eliminate the maintenance and repair, thereby reducing cost and energy consumption. Together with facile spraying fabrication process, our STC paves the way to construct a green and resource-saving society.

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“…The chemical compositions of the surface determine the surface energy, which has a signicant effect on its wettability. [1][2][3][4] There are many superhydrophobic surfaces in nature, such as rice leaves, rose petals, waterfowl feathers, strider legs, spider silk, and especially the famous lotus leaves. [5][6][7] Superhydrophobic surfaces have attracted wide attention because of their importance in scientic research and engineering.…”

Section: Introductionmentioning

confidence: 99%