Multi‐Scale Superhydrophobic Surface with Excellent Stability and Solar‐Thermal Performance for Highly Efficient Anti‐Icing and Deicing

Small, Journal Year: 2024, Volume and Issue: 20(32)

Published: March 21, 2024

Abstract Ice accretion can significantly impact the efficiency and safety of outdoor equipment. Solar‐thermal superhydrophobic surface is an effective strategy for anti‐icing deicing. However, droplets easily turn to Wenzel state during icing melting cycle processes, increasing adhesion making difficult remove from surface. In this work, a triple‐scale solar‐thermal prepared on stainless steel 304 by etching, in situ oxidation, spin‐coating TiN nanoparticles highly efficient deicing anti‐icing. The multi‐scale structure enabled recover Cassie completely after melting. contact angle decreased 162.5° 136.7° process gradually increased 162.1° process. addition, metal oxides exhibit high solar absorptivity ( = 0.925). synergistic effect superhydrophobicity performance endowed designed with excellent performance. This work contributed practical development applications based surfaces.

Language: Английский

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Dual-Energy-Barrier Stable Superhydrophobic Structures for Long Icing Delay

ACS Nano, Journal Year: 2024, Volume and Issue: 18(19), P. 12489 - 12502

Published: May 3, 2024

Using superhydrophobic surfaces (SHSs) with the water-repellent Cassie–Baxter (CB) state is widely acknowledged as an effective approach for anti-icing performances. Nonetheless, CB susceptible to diverse physical phenomena (e.g., vapor condensation, gas contraction, etc.) at low temperatures, resulting in transition sticky Wenzel and loss of capabilities. SHSs various micronanostructures have been empirically examined enhancing stability; however, energy barrier transits from metastable stable thus stability enhancement currently not enough guarantee a well appliable performance temperatures. Here, we proposed dual-energy-barrier design strategy on micronanostructures. Rather than typical single conventional CB-to-Wenzel transition, introduced two states (i.e., I II), where needed go through II then state, significantly improving entire stability. We applied ultrafast laser fabricate this micronanostructures, established theoretical framework, performed series experiments. The performances were exhibited long delay icing times (over 27,000 s) ice-adhesion strengths (0.9 kPa). kinetic mechanism underpinning enhanced was elucidated attributed preferential liquid pinning shallow closed structures, enabling higher CB-Wenzel sustain state. Comprehensive durability tests further corroborated potentials designed structures applications.

Language: Английский

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A fluorine-free and high-robustness photothermal self-healing superhydrophobic coating with long-term anticorrosion and antibacterial performances

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 210, P. 284 - 298

Published: June 15, 2024

Language: Английский

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Micro/Nano Hierarchical Crater‐Like Structure Surface With Mechanical Durability and Low‐Adhesion for Anti‐Icing/Deicing

Small, Journal Year: 2024, Volume and Issue: 20(43)

Published: Aug. 23, 2024

Superhydrophobic surfaces have attracted significant attention for their ability to prevent ice formation and facilitate deicing without requiring external energy. However, these are often vulnerable damage from forces, leading functional failure due poor mechanical stability, which limits widespread use. Drawing inspiration the hierarchical groove of rose petals micropapillae lotus leaves, a simple laser-based method is proposed create superhydrophobic surface with micro/nano crater-like structure (HCLS). To enhance surface, boiling water treatment applied induce dense nanostructures, resulting in an optimal contact angle (CA) 162° desirable sliding (SA) 2.0°. The initial adhesion strength HCLS as low 1.4 kPa remains below 10 even after 300 cm sandpaper abrasion. Furthermore, demonstrates excellent durability, maintaining its performance under conditions that simulate continuous impact sand extreme weather. This approach offers innovative design concept has potential advance development anti-icing future aircraft.

Language: Английский

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Holistic Anti/Dewetting Design of Anti/Deicing Superhydrophobic Surfaces (ADISS)

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(4), P. 1457 - 1466

Published: March 13, 2024

Anti/deicing superhydrophobic surfaces (ADISS) exhibit appealing capabilities of shedding water and delaying icing through the nonwetting Cassie–Baxter (C–B) state, whose maintenance should be a prerequisite for practical applications ADISS. However, C–B state often suffers from inevitable degradation, while its recovery encounters significant challenges. Therefore, holistic antiwetting/dewetting designs deserve more attention to deal with multiscale exposure ADISS involving multifactorial interactions in time space. Herein, three criteria were proposed design ADISS: high intrinsic contact angle, fine nanoscale structures, appropriate spatial distribution micro/nanostructures. By optimized air spraying, target nanoengineered constructed stable nano-Cassie improved anti-icing antifrosting properties. Moreover, dewetting ability achieve was demonstrated, based on which novel deicing mechanism coalescence-induced ice detachment has been revealed. This method is easy execute, thus, having value engineering applications.

Language: Английский

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Scalable robust photothermal superhydrophobic coatings for efficient anti-icing and de-icing in simulated/real environments

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 7, 2024

Photothermal superhydrophobic coatings are supposed promising to prevent ice accumulation on infrastructures but often experience significant performance degradation in real icing conditions and lack mechanical robustness. Here, we report design of robust photothermal with three-tier hierarchical micro-/nano-/nanostructures by deposition nanosized MOFs natural attapulgite nanorods, fluorination, controlled phase separation a hydrophobic adhesive spraying assembly. Phase degree content significantly influence the coatings' properties regulating structural parameters morphology. In simulated/real environments, simultaneously show (i) high superhydrophobicity stable Cassie-Baxter states due their low-surface-energy, micro-/nano-/nanostructure, (ii) excellent effect primarily MOFs, (iii) good robustness phase-separated adhesive, reinforcement self-similar structure. Accordingly, combined low thermal conductivity, exhibit remarkable anti-icing/frosting (e.g., no freezing at least 150 min almost free frost 25 min) de-icing/frosting performances fast de-icing 12.7 de-frosting 16.7 such environments. Furthermore, realize large-scale preparation reasonable costs. The have great application potential for anti-icing world efficiently using sunlight. poor stability conditions. authors low-surface-energy micro-/nano- /nanostructures.

Language: Английский

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Super photothermal/electrothermal response and anti-icing/deicing capability of superhydrophobic multi-walled carbon nanotubes/epoxy coating

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154383 - 154383

Published: July 29, 2024

Language: Английский

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Thermodynamic Mechanisms Governing Icing: Key Insights for Designing Passive Anti-Icing Surfaces

iScience, Journal Year: 2025, Volume and Issue: 28(2), P. 111668 - 111668

Published: Jan. 5, 2025

In winter, while the freezing of water can create breathtaking landscapes, it also poses significant operational challenges when ice accumulates on functional surfaces. Ice obstructs solar panels, impairs car windshield visibility, increases energy consumption in appliances due to insulation, and cause structural failures or collapses weight rigidity. To address these issues, various active de-icing methods are employed cold regions. However, passive anti-icing solutions gaining preference for their lower consumption, cost-effectiveness, environmental benefits. While superhydrophobic surfaces delay formation, they do not fully resolve problem. Understanding interaction between moisture-essential formation-can inspire innovative design principles. This review examines icing physics, identifies critical factors affecting evaluates icephobic surfaces, discusses practical application challenges. We outline promising principles emphasizing broad applicability across diverse environments.

Language: Английский

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Flexible Mushroom-Like Cross-Scale Surface with Extreme Pressure Resistance for Telecommunication Lines Anti-Icing/Deicing

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Ice accretion caused by freezing rain or snowstorms is a common phenomenon in cold climates that seriously threatens the safety and reliability of telecommunication lines other overhead networks. Various anti-icing strategies have been demonstrated through surface engineering to delay ice formation. However, existing surfaces still encounter several challenges; for example, are prone ice-pinning formation due impact supercooled droplets, which leads loss effectiveness. In this study, mushroom-like cross-scale (MCS) with extreme pressure resistance superior anti-ice-pinning property was reported. Specifically, designed MCS, featuring multiscale microfeatures, re-entrant structure, heterogeneous sidewalls, nanoscale particles, exhibits excellent properties. determined occur process involving liquid penetration, condensation, icing, frost filling. By establishing an anti-ice -pinning model bubble column model, relationship between structural characteristics performance clarified. The MCS demonstrates static repellency (contact angle >167°) robust dynamic (water Weber number ≥300). Furthermore, it ultralow adhesion strength 0.46 kPa. Notably, remains below 5 kPa even after 15 deicing cycles. mechanism icephobicity induced micromorphologies provide valuable insights effective prospects line areas field information communication technology.

Language: Английский

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Nano hierarchical hill-like structure with TA1 surface manufactured by LIPSS for anti-corrosion and anti-icing

Journal of Materials Research and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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