Robust icephobic coating based on the spiky fluorinated Al2O3 particles

Starostin, Anton; Стрельников, В. Н.; Вальцифер, В. А.; Lebedeva, I. I.; Legchenkova, Irina; Bormashenko, Edward

doi:10.1038/s41598-021-84283-w

Cited by 17 publications

(11 citation statements)

References 49 publications

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“…Interest in micro-and nanoparticles has generally been increasing, particularly in polymer particles with enhanced surface roughness and structure, to meet applicationspecific demands such as controlled drug delivery [1,2], super-hydrophobic [3] and icephobic [4,5] surfaces, attachment of cells [6], and adhesion of metal nanoparticles [7,8]. For these purposes, the particle surface can be modified by introducing wrinkles and corrugations [1,3,6,[9][10][11][12][13][14] as well as controlled or self-assembly of particles [15][16][17] into aggregates.…”

Section: Introductionmentioning

confidence: 99%

Textured and Hierarchically Constructed Polymer Micro- and Nanoparticles

Kronfeld

Mazetyte‐Stasinskiene

Zheng

et al. 2021

Applied Sciences

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Microfluidic techniques allow for the tailored construction of specific microparticles, which are becoming increasingly interesting and relevant. Here, using a microfluidic hole-plate-device and thermal-initiated free radical polymerization, submicrometer polymer particles with a highly textured surface were synthesized. Two types of monomers were applied: (1) methylmethacrylate (MMA) combined with crosslinkers and (2) divinylbenzene (DVB). Surface texture and morphology can be influenced by a series of parameters such as the monomer–crosslinker–solvent composition, surfactants, and additives. Generally, the most structured surfaces with the simultaneously most uniform particles were obtained in the DVB–toluene–nonionic-tensides system. In a second approach, poly-MMA (PMMA) particles were used to build aggregates with bigger polymer particles. For this purpose, tripropyleneglycolediacrylate (TPGDA) particles were synthesized in a microfluidic co-flow arrangement and polymerized by light- irradiation. Then, PMMA particles were assembled at their surface. In a third step, these composites were dispersed in an aqueous acrylamide–methylenebisacrylamide solution, which again was run through a co-flow-device and photopolymerized. As such, entities consisting of particles of three different size ranges—typically 0.7/30/600 µm—were obtained. The particles synthesized by both approaches are potentially suitable for loading with or incorporation of analytic probes or catalysts such as dyes or metals.

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Section: Introductionmentioning

confidence: 99%

Textured and Hierarchically Constructed Polymer Micro- and Nanoparticles

Kronfeld

Mazetyte‐Stasinskiene

Zheng

et al. 2021

Applied Sciences

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“…Solid-liquid interaction on rough surfaces can be categorized into the Wenzel (W), Cassie–Baxter (CB), and the recently proposed partial-wetting (PW) states ( Figure 3 a–c) [ 47 ]. Reportedly, the wetting property of a condensed microdroplet depends on the tip area ( t ), center-to-center pitch ( l ), and height ( h ) of the nanofeatures [ 9 , 48 ]. Crucially, h must exceed a critical value (e.g., h > l ) because nanostructures are completely wetted by the condensed water droplet when h is small owing to the disruption in the Capillary-Laplace balance [ 8 ].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Metallic Superhydrophobic Surfaces with Tunable Condensate Self-Removal Capability and Excellent Anti-Frosting Performance

Zhao

Dai

et al. 2022

Nanomaterials

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Laser fabrication of metallic superhydrophobic surfaces (SHSs) for anti-frosting has recently attracted considerable attention. Effective anti-frosting SHSs require the efficient removal of condensed microdroplets through self-propelled droplet jumping, which is strongly influenced by the surface morphology. However, detailed analyses of the condensate self-removal capability of laser-structured surfaces are limited, and guidelines for laser processing parameter control for fabricating rationally structured SHSs for anti-frosting have not yet been established. Herein, a series of nanostructured copper-zinc alloy SHSs are facilely constructed through ultrafast laser processing. The surface morphology can be properly tuned by adjusting the laser processing parameters. The relationship between the surface morphologies and condensate self-removal capability is investigated, and a guideline for laser processing parameterization for fabricating optimal anti-frosting SHSs is established. After 120 min of the frosting test, the optimized surface exhibits less than 70% frost coverage because the remarkably enhanced condensate self-removal capability reduces the water accumulation amount and frost propagation speed (<1 μm/s). Additionally, the material adaptability of the proposed technique is validated by extending this methodology to other metals and metal alloys. This study provides valuable and instructive insights into the design and optimization of metallic anti-frosting SHSs by ultrafast laser processing.

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“…In recent years, researchers have observed that superhydrophobic surfaces have good anti-icing properties. These surfaces can delay the icing time and considerably reduce the icing adhesion force [14][15][16][17]. However, several experimental studies observed that simply using superhydrophobic surfaces cannot prevent icing under harsh conditions.…”

Section: Introductionmentioning

confidence: 99%

Variation in Anti-icing Power of Superhydrophobic Electrothermal Film under Different Temperatures and Wind Speeds

Xue

Liu

Wang

et al. 2022

International Journal of Aerospace Engineering

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Anti-icing with low-energy consumption has important research value for unmanned aerial vehicles. In this study, a superhydrophobic electrothermal film for anti-icing applications was designed and prepared, and power consumption experiments were conducted at different temperatures and wind speeds in an icing wind tunnel. The anti-icing power consumption of the superhydrophobic electrothermal film was lower than that of a traditional electrothermal film. As the temperature decreased or the wind speed increased, the anti-icing power consumption of the two types of electrothermal films increased. A heat flux model was used to analyse the experimental results. It can be concluded that the water collection rate per unit area W and wetting coefficient ξ w are the main factors affecting the power consumption of the superhydrophobic electrothermal film. When the temperature decreased and the wind speed increased, the contact time and contact area between the droplet and the surface affected W and ξ w . Thus, this study is of considerable significance for the design of superhydrophobic electrothermal films for novel anti-icing applications in the future.

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Robust icephobic coating based on the spiky fluorinated Al2O3 particles

Cited by 17 publications

References 49 publications

Textured and Hierarchically Constructed Polymer Micro- and Nanoparticles

Textured and Hierarchically Constructed Polymer Micro- and Nanoparticles

Fabrication of Metallic Superhydrophobic Surfaces with Tunable Condensate Self-Removal Capability and Excellent Anti-Frosting Performance

Variation in Anti-icing Power of Superhydrophobic Electrothermal Film under Different Temperatures and Wind Speeds

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