Stable drag reduction of anisotropic superhydrophobic/hydrophilic surfaces containing bioinspired micro/nanostructured arrays by laser ablation

Rong, Wanting; Zhang, Haifeng; Mao, Zhigang; Chen, Liang; Liu, Xiaowei

doi:10.1016/j.colsurfa.2021.126712

Cited by 28 publications

(9 citation statements)

References 41 publications

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“…In a microfluidic channel, an antifouling coating with a drag reduction of flow inside is desirable for economic interest, i.e., extending service life and reducing energy consumption. [33][34][35] The SLACC has been coated on the inner wall of the microfluidic channels with a diameter of 500 µm in a cell migration chip through depositing PDA and PDMS in sequence (Figure 4A). The bovine blood and the deionized water was impeled to pass through the SLACC coated microfluidic channels for 60 s under the pressure difference (∆P = 200 mbar) in sequence.…”

Section: Anti-fouling and Drag Reduction Using Slacc In Microfluidic ...mentioning

confidence: 99%

Universal and Stable Slippery Coatings: Chemical Combination Induced Adhesive‐Lubricant Cooperation

Wang

Chen

Huang

et al. 2022

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Liquid lubricant of low affinity makes slippery coatings widely used in lubricating, anti‐biofouling, anti‐icing, fluid guiding, and drag reduction. Two critical challenges, however, remain in the practical application of slippery coatings consisting of liquid lubricants: (1) universality regardless of roughness and chemical composition of substrates, (2) stability of surface lubricity against evaporation. Herein, a chemical method is reported to create a universal and stable slippery lubricant‐adhesive cooperated coating (SLACC) through acid catalyzed dehydration reaction between the phenolic hydroxyl of polydopamine (PDA), with universal (for challenge‐1) and strong (for challenge‐2) adhesion properties, and liquid‐like polydimethylsiloxane (PDMS), with lubricant properties. Through overlying PDMS on PDA, a spatial gradient interpenetration of chemical combined PDA and PDMS leaving lubricant PDMS at the outermost of coating is achieved. This structure contributes to the following performances of SLACC: nearly universality suitable for 100 different abiotic or biotic substrates and stability sustainable for long‐term usages, UV radiating, refrigerating, hot air drying, freeze drying, knife scratch and abrasion. This proposed strategy is envisioned anti‐fouling from plane to tube and exhibits drag reduction in confined space.

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Section: Anti-fouling and Drag Reduction Using Slacc In Microfluidic ...mentioning

confidence: 99%

Universal and Stable Slippery Coatings: Chemical Combination Induced Adhesive‐Lubricant Cooperation

Wang

Chen

Huang

et al. 2022

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“…Superhydrophobic surfaces with a water contact angle (WCA) larger than 150°and sliding hysteresis angle (SHA) less than 10°, play a key role in many fields due to their extremely water repellent properties such as self-cleaning, [1][2][3][4][5] anti-icing, [6][7][8] metal anti-corrosion, 9 fog harvesting, 10 marine drag reduction 11 and oil-water separation. [12][13][14][15][16][17][18][19] Through the study of the lotus leaf surface which can make raindrops roll and bounce to remove contaminants, it is found that micro-nano "papillae" structures and the waxy substance covering the surface are the main reasons for this "self-cleaning" phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Robust multifunctional fluorine-free superhydrophobic fabrics for high-efficiency oil–water separation with ultrahigh flux

Xiong

Huang

et al. 2022

Nanoscale

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“…Using this characteristic of laser etching, superhydrophobic surfaces with excellent anisotropy can be easily prepared (Yong et al, 2014;Fang et al, 2018;Lasagni et al, 2018;Cai et al, 2019;Tuo et al, 2019;Bai et al, 2020;Rong et al, 2021;Yang et al, 2021). In another study, femtosecond laser and picosecond laser were used to construct nanostructures of aluminum, copper, and galvanized steel, respectively, and then aging in vacuum was used to replace low surface energy modification.…”

Section: Laser-etching Methodsmentioning

confidence: 99%

Biomimetic superhydrophobic metal/nonmetal surface manufactured by etching methods: A mini review

Ge-Zhang

Yang

et al. 2022

Front. Bioeng. Biotechnol.

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As an emerging fringe science, bionics integrates the understanding of nature, imitation of nature, and surpassing nature in one aspect, and it organically combines the synergistic complementarity of function and structure–function integrated materials which is of great scientific interest. By imitating the microstructure of a natural biological surface, the bionic superhydrophobic surface prepared by human beings has the properties of self-cleaning, anti-icing, water collection, anti-corrosion and oil–water separation, and the preparation research methods are increasing. The preparation methods of superhydrophobic surface include vapor deposition, etching modification, sol–gel, template, electrostatic spinning, and electrostatic spraying, which can be applied to fields such as medical care, military industry, ship industry, and textile. The etching modification method can directly modify the substrate, so there is no need to worry about the adhesion between the coating and the substrate. The most obvious advantage of this method is that the obtained superhydrophobic surface is integrated with the substrate and has good stability and corrosion resistance. In this article, the different preparation methods of bionic superhydrophobic materials were summarized, especially the etching modification methods, we discussed the detailed classification, advantages, and disadvantages of these methods, and the future development direction of the field was prospected.

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Stable drag reduction of anisotropic superhydrophobic/hydrophilic surfaces containing bioinspired micro/nanostructured arrays by laser ablation

Cited by 28 publications

References 41 publications

Universal and Stable Slippery Coatings: Chemical Combination Induced Adhesive‐Lubricant Cooperation

Universal and Stable Slippery Coatings: Chemical Combination Induced Adhesive‐Lubricant Cooperation

Robust multifunctional fluorine-free superhydrophobic fabrics for high-efficiency oil–water separation with ultrahigh flux

Biomimetic superhydrophobic metal/nonmetal surface manufactured by etching methods: A mini review

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