Low Ice Adhesion on Nano-Textured Superhydrophobic Surfaces under Supersaturated Conditions

Subramanyam, Srinivas Bengaluru; Kondrashov, Vitaliy; Rühe, Jürgen; Varanasi, Kripa K.

doi:10.1021/acsami.6b01133

Cited by 192 publications

(107 citation statements)

References 30 publications

(51 reference statements)

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“…In the recent years, many researches have been focusing on developing environmental friendly passive icephobic surfaces that can repel the incoming cold water droplets, [3][4][5][6] delay ice nucleation, [7][8][9] and reduce ice adhesion strength. [10][11][12][13][14][15][16][17] Since ice formation on the surface was proven to be inevitable under harsh environment, numbers of studies have been devoted to develop surfaces with low ice adhesion strength (<100 kPa). [18][19][20][21][22][23][24][25] To date, one of the most famous icephobic surfaces, the slippery liquid-infused porous surfaces (SLIPS), had achieved ultralow ice adhesion strengths of ∼15, 24 1.7, 26 and 0.4 kPa, 27 in different studies.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Mechanical Durability of Icephobic Surfaces by Introducing Autonomous Self-Healing Function

Zhuo

Håkonsen

et al. 2018

ACS Appl. Mater. Interfaces

110

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Ice accretion presents a severe risk for human safety. Although great efforts have been made for developing icephobic surfaces (the surface with an ice adhesion strength below 100 kPa), expanding the lifetime of state-of-the-art icephobic surfaces still remains a critical unsolved issue. Herein, a novel icephobic material is designed by integrating an interpenetrating polymer network (IPN) into an autonomous self-healing elastomer, which is applied in anti-icing for enhancing the mechanical durability. The molecular structure, surface morphology, mechanical properties, and durable icephobicity of the material were studied. The creep behaviors of the new icephobic material, which were absent in most relevant studies on self-healing materials, were also investigated in this work. Significantly, the material showed great potentials for anti-icing applications with an ultralow ice adhesion strength of 6.0 ± 0.9 kPa, outperforming many other icephobic surfaces. The material also exhibited an extraordinary durability, showing a very low long-term ice adhesion strength of ∼12.2 kPa after 50 icing/deicing cycles. Most importantly, the material was able to exhibit a self-healing property from mechanical damages in a sufficiently short time, which shed light on the longevity of icephobic surfaces in practical applications.

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Section: Introductionmentioning

confidence: 99%

Enhancing the Mechanical Durability of Icephobic Surfaces by Introducing Autonomous Self-Healing Function

Zhuo

Håkonsen

et al. 2018

ACS Appl. Mater. Interfaces

110

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“…This allows easy removal of the frost from the WSC. However, on the coatings with relatively large pores, frost forms and fills each micropore entirely without residual pocket air, [ 63 ] and the resistance to frosting is negatively affected.…”

Section: Resultsmentioning

confidence: 99%

Water‐Based Robust Transparent Superamphiphobic Coatings for Resistance to Condensation, Frosting, Icing, and Fouling

Song

Cheng

et al. 2020

Adv Materials Inter

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high fraction of the total energy consumption. For example, air-conditioners and refrigerators account for more than 10% and 32% of the total residential energy consumption in China, respectively. [2,3] Therefore, improvement of the energy efficiency characterizing heat exchangers plays a crucial role in reducing energy consumption. However, the occurrence of condensate films, frost layers, and fouling on the surfaces of conventional hydrophilic heat exchangers acts as a thermal barrier to significantly reduce in the heat transfer. One alternative, that is, a periodic heating process for complete melting of the frost, results in extra energy consumption. In addition, wet surfaces are prone to the dust deposition, breeding of bacteria, and corrosion acceleration.Inspired by nature, [4][5][6][7] superhydrophobic surfaces with extreme repellency to water have attracted significant interest, owing to their potential applications in anticondensation, anti-frosting, anti-icing, antifogging, and self-cleaning activities. [8][9][10][11][12][13][14][15][16][17][18][19][20] Biomimetic superhydrophobic surfaces can be prepared via different approaches, including reactive ion etching, [21] chemical/physical processing, [22][23][24][25] lithographing, [26,27] and coating. [28][29][30][31][32][33] Among these approaches, the coating approach has been widely applied, owing to its simple preparation process, low equipment requirement, and wide application range. However, organic solvents, such as ethanol, acetone, or butyl acetate, are frequently used to dissolve or disperse low surface energy substances during the preparation process. [34,35] Compared with organic solvents, water is a green, safe, and economical solvent. [36] A few strategies have been reported about preparing waterbased superhydrophobic coatings and even water-based superamphiphobic coatings. [37][38][39][40][41][42][43][44] The focus of the present studies is on the preparation of these coatings. However, high performances of water-based superhydrophobic coatings are neglected which are the key factors in wide, long-term, and efficient application, due to the difficulty in achieving them. For example, micro-sized or smaller condensate dewdrops on most water-based superhydrophobic coatings occur in the Wenzel state, although the contact angles (CAs) and sliding angles (SAs) of macro water droplets on these coatings are >150 and <10, respectively. [45] The Wenzel-state dewdrops may lead to Due to the considerable demand for improving energy conservation and emission reduction, superhydrophobic coatings mainly derived from organic solvents have attracted significant interest, based on their potential role in enhancing heat transfer. Although water-based coatings are relatively safe and economical, and contain low volatile organic compounds (VOCs), the realization of coatings with excellent anti-condensation, anti-frosting, antiicing, and passive self-cleaning properties remains challenging, owing to the Wenzel state of small-sized condensate microdrops. Herein, ...

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“…From that starting point, the typical icephobic coatings must resist to the freezing of the impacting supercooled droplets (repel them or delay their freezing time) [52,58,[80][81][82], lower the freezing temperature of water droplets at continuous solid-liquid contact i.e., sessile droplet mode (freezing temperature depression) [58,77,83] and minimizing or avoiding the frost growth [78,[84][85][86][87]. However, if by some reason icing occurs, another characteristic feature indicating passive icephobicity is the reduced ice adhesion strength compared to plain materials [39,[88][89][90].…”

Section: Nomenclature Of Icing and Criteria For Passive Icephobicity mentioning

confidence: 99%

From Extremely Water-Repellent Coatings to Passive Icing Protection—Principles, Limitations and Innovative Application Aspects

Esmeryan¹

2020

Coatings

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The severe environmental conditions in winter seasons and/or cold climate regions cause many inconveniences in our routine daily-life, related to blocked road infrastructure, interrupted overhead telecommunication, internet and high-voltage power lines or cancelled flights due to excessive ice and snow accumulation. With the tremendous and nature-inspired development of physical, chemical and engineering sciences in the last few decades, novel strategies for passively combating the atmospheric and condensation icing have been put forward. The primary objective of this review is to reveal comprehensively the major physical mechanisms regulating the ice accretion on solid surfaces and summarize the most important scientific breakthroughs in the field of functional icephobic coatings. Following this framework, the present article introduces the most relevant concepts used to understand the incipiency of ice nuclei at solid surfaces and the pathways of water freezing, considers the criteria that a given material has to meet in order to be labelled as icephobic and clarifies the modus operandi of superhydrophobic (extremely water-repellent) coatings for passive icing protection. Finally, the limitations of existing superhydrophobic/icephobic materials, various possibilities for their unconventional practical applicability in cryobiology and some novel hybrid anti-icing systems are discussed in detail.

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Low Ice Adhesion on Nano-Textured Superhydrophobic Surfaces under Supersaturated Conditions

Cited by 192 publications

References 30 publications

Enhancing the Mechanical Durability of Icephobic Surfaces by Introducing Autonomous Self-Healing Function

Enhancing the Mechanical Durability of Icephobic Surfaces by Introducing Autonomous Self-Healing Function

Water‐Based Robust Transparent Superamphiphobic Coatings for Resistance to Condensation, Frosting, Icing, and Fouling

From Extremely Water-Repellent Coatings to Passive Icing Protection—Principles, Limitations and Innovative Application Aspects

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