Grass‐to‐stone surface inspired long‐term inhibiting scaling

Luo, Yimin; Tan, Sheng; Luo, Zhen; Li, Jingbo; Zhu, Zewei; Jia, Baoguang; Liu, Zhipeng

doi:10.1002/nano.202200068

Cited by 4 publications

(4 citation statements)

References 54 publications

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“…Effect of Roughness Structure and Surface Energy on Dynamic Wetting. On the basis of our team's previous work, bare steel substrates, bionic self-cleaning hydrophobic coating 10 and superhydrophobic coating 9 with different surface characteristics are selected. As shown in Figure 1a-b.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Bringing folmula 5(9) (10) into can obtain the relation between E surf and x. Let x = 0, the interfacial energy of the droplet in the Cassie state can be obtained:…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Understanding the movement law of droplets on different surfaces is crucial for the coating design for antifreezing rain coatings. Our team has conducted profound research on self-cleaning hydrophobic/superhrophobic coatings. − By using the characteristics of high water contact angle (WCA ∼ 150°), the ice nucleation is delayed so that subcooled droplets have a longer removing time . However, the droplet drag reduction performance of hydrophobic/superhydrophobic surfaces has been controversial.…”

Section: Introductionmentioning

confidence: 99%

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The Droplet Creeping-Sliding Dynamic Wetting Mechanism on Bionic Self-Cleaning Surfaces

Liu,

Luo,

Chen

et al. 2024

Langmuir

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The dynamic wetting behavior of droplets has been of wide concern due to the hazards of accretion/icing of supercooled droplets on engineering components/systems served in low temperature freezing rain environment; thus, it is urgent to establish the relationship between droplet depinning/removing behaviors and surface characteristics. In this article, the actual rotation conditions of moving components such as wind turbine blades are simulated. The self-cleaning hydrophobic coating surface(S1) and bionic superhydrophobic coating surface(S2) show outstanding droplet removal performance compared to hydrophilic bare steel surface(S0), and the average speed of the droplet removal is increased by 400−500%. The "creepingsliding" behavior of droplets on self-cleaning coatings is investigated by the change of droplet displacement(ΔD). The effect of the energy storage caused by the droplet creeping process provides initial kinetic energy for the droplet removal. Combined with the experimental data and theoretical model, the critical depinning resistance is calculated. The difference of the wetting interface free energy(ΔE x ) during the dynamic wetting process of the droplets on the bionic superhydrophobic self-cleaning surface is researched. And the influence mechanism of the droplet embedded depth(x) on the creeping/sliding behavior in the nanotexture is clarified. Thus, the mechanical criterion of droplet depinning is proposed (the error is about 10%). The results can provide a theoretical basis for the design principle of antifreezing rain coatings on moving components.

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Section: ■ Results and Discussionmentioning

confidence: 99%

“…Bringing folmula 5(9) (10) into can obtain the relation between E surf and x. Let x = 0, the interfacial energy of the droplet in the Cassie state can be obtained:…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Droplet Creeping-Sliding Dynamic Wetting Mechanism on Bionic Self-Cleaning Surfaces

Liu,

Luo,

Chen

et al. 2024

Langmuir

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“…[14] The method applied to glass by integrating RIE technology with standard an issue accompanied by the coating application process with mechanical stability remains a critical challenge. [29,30] Based on our previous study of bionic PTFE/PPS superhydrophobic coating surfaces with both the porous network and micro-nanoscale binary structure (MNBS), [31] static analysis of anti-icing, [32,33] the dynamics of droplet impact on inclined surfaces, [34,35] and anticorrosive/inhibiting scaling performances, [36,37] nonetheless the fabrication of above polymer coating with hierarchical micro/nanostructures requires high temperature to remove polar functional groups, rendering the coatings' transparency reduced still for the light scattering effect. Therefore, fabricating a low surface energy and nanostructured polymer coating by simple method at room temperature may be a unique direction to develop an application oriented anti-fingerprint coating technology and seldom reported.…”

Section: Introductionmentioning

confidence: 99%

Micro/Nano‐Pores and Anti‐Fingerprint Coating by Vacancy‐Capture and Interface Intelligent Control

Luo

Hao

et al. 2023

Adv Materials Inter

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Cu dewetting-masking seems limited for large-scale fabrication.The second method is the amphiphobic coating strategy since fingerprint smudging are mainly composed of water and skin oil (sebum). [15] Although the crystal structure of inorganic coatings is conducive to transparency, the chemical stability for current inorganic coatings limited their application. Thus, anti-fingerprint researches mainly focus on organic amphiphobic coatings. A thin film of polyaniline (PANI) nanofibers on the stainless steels with fluoro-thiol modification was prepared through an optimal polymerization time of aniline using HClO 4 as a dopant, showing transparent and anti-fingerprint properties. [16] Sun et al deposited silicon dioxide (SiO 2 ) onto polycarbonate (PC) substrates via the pulse laser deposition, followed by grafted trichloro(1H,1H,2H,2H-perfluorooctyl) silane (PFTS) on the silica surface. [17] Wang et al adopted vapor phase deposition technology to graft 1H,1H,2H,2H-perfluorodecyltrichlorosilane (PFDTS) onto glass surfaces modified with chitin nanofibers (ChNFs), achieving water contact angles at 156°and oil contact angles at 97°, respectively. [18] The above research shows that using fluoropolymer to reduce surface energy and controlling surface roughness could simultaneously achieve the hydrophobicity and transparency of organic coatings, which are with potential conflict recognized as one of the most challenging issues for anti-fingerprint coating's designing. [19][20][21][22][23][24] Furthermore, fabricating micro/nano-structure is typically one of the strategies for regulating surface roughness. Cao et al fabricated porous Si films by a convenient gold-assisted electroless etching process, which possess a hierarchical porous structure consisting of micrometer-sized asperities superimposed onto a network of nanometer-sized pores. [25] Bellanger et al synthesized an original series of fluorinated EDOP derivatives as monomers for the elaboration of superoleophobic surfaces by electrochemical polymerization. The authors proposed that the introduction of methylene unit between the EDOP heterocycle and the fluorinated chain turn on/off micro-to nanostructuration. [26] Caruso et al prepared porous silica films with thicknesses of 60≈130 µm and with meso-and macro-scale pores by using both porous membrane templates and amphiphilic supramolecular aggregates as pore-forming agents. [27] Kusakabe et al fabricated porous silica membranes by a sol-gel technique on a γ-aluminacoated α-alumina tube using sols from tetraethoxysilane (TEOS) and octyl-, dodecyl-or octadecyltriethoxysilane. [28] In addition,this work, a simple anti-fingerprint strategy (reduced ≈40-60%) to rearrange fingerprint droplets by patterned micro/nano-pore/spoons texture, air cushion and low surface energy is reported. Superior to previous precise and complex preparation methods, the micro/nano-texture are fabricated through conventional process of spray and dip. The pore and spoon can be freely switched by changing the process. The number (N) and size (r...

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Enhanced adhesive and anti-corrosive performances of polymer composite coating for rusted metallic substrates by capillary filling

Luo

et al. 2023

Progress in Organic Coatings

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Grass‐to‐stone surface inspired long‐term inhibiting scaling

Cited by 4 publications

References 54 publications

The Droplet Creeping-Sliding Dynamic Wetting Mechanism on Bionic Self-Cleaning Surfaces

The Droplet Creeping-Sliding Dynamic Wetting Mechanism on Bionic Self-Cleaning Surfaces

Micro/Nano‐Pores and Anti‐Fingerprint Coating by Vacancy‐Capture and Interface Intelligent Control

Enhanced adhesive and anti-corrosive performances of polymer composite coating for rusted metallic substrates by capillary filling

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