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Keshavarzi S, Momen G, Eberle P, Azimi Yancheshme A, Alvarez NJ, Jafari R. Exploiting intermediate wetting on superhydrophobic surfaces for efficient icing prevention. J Colloid Interface Sci 2024; 670:550-562. [PMID: 38776690 DOI: 10.1016/j.jcis.2024.05.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 05/03/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024]
Abstract
HYPOTHESIS Superhydrophobic surfaces can effectively prevent the freezing of supercooled droplets in technological systems. Droplets on superhydrophobic surfaces commonly not only wet the top asperities (Cassie State), but also partially penetrate into microstructure due to surface properties, environment, and droplet impact occurring in real-world applications. Implications on ice nucleation can be expected and are little explored. It remains elusive how anti-icing surfaces can be designed to exploit intermediate wetting phenomena. EXPERIMENTS We utilized engineered micro-/nanostructures, specifically micropillars, to modulate the wetting fraction in the microstructure. The behavior of intermediate wetting with supercooling and resulting implications on ice nucleation delay when potential nucleation sites are formed in the microcavities were investigated using experimental, theoretical, and simulation components. FINDINGS The temperature-dependent wetting fraction in the microstructure increased at supercooled temperatures, partly activated by condensation in the microcavities. At -10/-20 °C, a critical wetting fraction led to maximum ice nucleation delays, with experimental results consistent with theoretical predictions. This critical wetting fraction minimized the effective contact area solid-to-liquid along the partially wetted microstructure. The study establishes physical relations between ice nucleation delays, geometrical surface parameters and wettability properties in the intermediate wetting regime, providing guidance for the design of ice resistant microstructured surfaces.
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Affiliation(s)
- Samaneh Keshavarzi
- Department of Applied Sciences, University of Québec in Chicoutimi, Chicoutimi, Québec, Canada
| | - Gelareh Momen
- Department of Applied Sciences, University of Québec in Chicoutimi, Chicoutimi, Québec, Canada.
| | - Patric Eberle
- Institute of Electrical Engineering, Lucerne University of Applied Sciences and Arts, Lucerne, Switzerland
| | - Amir Azimi Yancheshme
- Chemical and Biological Engineering Department, Drexel University, Philadelphia, USA
| | - Nicolas J Alvarez
- Chemical and Biological Engineering Department, Drexel University, Philadelphia, USA
| | - Reza Jafari
- Department of Applied Sciences, University of Québec in Chicoutimi, Chicoutimi, Québec, Canada
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2
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Huang J, Peng Z, Zhang B, Yao Y, Chen S. A Flexible and High-Efficient Anti-Icing/Deicing Coating Based on Carbon Nanomaterials. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39129176 DOI: 10.1021/acsami.4c06682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Anti-icing/deicing coatings with low energy consumption and superior flexibility could better fit application requirements in practical engineering. In this paper, an active-passive-integrated anti-icing/deicing coating based on carbon nanomaterials is prepared, which not only possesses various functions of electrothermal conversion, photothermal conversion, and superhydrophobicity but also shows a large deformability to accommodate curved surfaces. The coating consists of a sandwich-structured bottom part and top layer, the former of which includes a core conductive layer made of densely mixed carbon nanotubes (CNTs) and graphene and two polydimethylsiloxane (PDMS) wrapping layers, while the latter is a polymeric composite filled with TiN and SiO2 nanoparticles. Experimental studies show that, when the present coating works under an electric field alone, a 90% conversion of electric energy to thermal energy can be realized, only a 2 V voltage is enough to unfreeze the surface at minus 20 degrees within 400 s, and a slightly larger voltage of 2.5 V leads to a significant temperature increase of more than 100 °C within 200 s. Such required voltages are significantly smaller than their counterparts in existing electrothermal-based methods to achieve the same heating effects, which could be further diminished with the auxiliary action of sunlight illumination. A fast and complete deicing/defrosting can be consequently achieved with a small energy input. Furthermore, the water repellency function, electric property, and electrothermal conversion performance of the coating remain almost unchanged after either a large bending deformation or many bending cycles, thus ensuring an outstanding anti-icing/deicing effect on both flat and curved surfaces. All of the results demonstrate apparent advantages of the present coating including high efficiency, low energy consumption, all-weather adaptability, and excellent flexibility, which should be of great practical value for the freeze protection of differently shaped industrial equipment.
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Affiliation(s)
- Jianan Huang
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhilong Peng
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Bo Zhang
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yin Yao
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Shaohua Chen
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
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3
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Chu F, Hu Z, Feng Y, Lai NC, Wu X, Wang R. Advanced Anti-Icing Strategies and Technologies by Macrostructured Photothermal Storage Superhydrophobic Surfaces. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2402897. [PMID: 38801015 DOI: 10.1002/adma.202402897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/23/2024] [Indexed: 05/29/2024]
Abstract
Water is the source of life and civilization, but water icing causes catastrophic damage to human life and diverse industrial processes. Currently, superhydrophobic surfaces (inspired by the lotus effect) aided anti-icing attracts intensive attention due to their energy-free property. Here, recent advances in anti-icing by design and functionalization of superhydrophobic surfaces are reviewed. The mechanisms and advantages of conventional, macrostructured, and photothermal superhydrophobic surfaces are introduced in turn. Conventional superhydrophobic surfaces, as well as macrostructured ones, easily lose the icephobic property under extreme conditions, while photothermal superhydrophobic surfaces strongly rely on solar illumination. To address the above issues, a potentially smart strategy is found by developing macrostructured photothermal storage superhydrophobic (MPSS) surfaces, which integrate the functions of macrostructured superhydrophobic materials, photothermal materials, and phase change materials (PCMs), and are expected to achieve all-day anti-icing in various fields. Finally, the latest achievements in developing MPSS surfaces, showcasing their immense potential, are highlighted. Besides, the perspectives on the future development of MPSS surfaces are provided and the problems that need to be solved in their practical applications are proposed.
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Affiliation(s)
- Fuqiang Chu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Zhifeng Hu
- Research Center of Solar Power and Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, China
| | - Yanhui Feng
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Nien-Chu Lai
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xiaomin Wu
- Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, China
| | - Ruzhu Wang
- Research Center of Solar Power and Refrigeration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
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Wang J, Liu Y. Self-Driven Gas Spreading on Mesh Surfaces for Regeneration of Underwater Superhydrophobicity. ACS APPLIED MATERIALS & INTERFACES 2024; 16:40231-40242. [PMID: 39034615 DOI: 10.1021/acsami.4c07843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Underwater superhydrophobic surfaces stand as a promising frontier in technological applications such as drag reduction, antifouling, and anticorrosion. Unfortunately, the air film, known as the plastron, on these surfaces tends to be unstable. To address this problem, active approaches have been designed to preserve or restore plastrons. In this work, a self-driven gas spreading superhydrophobic mesh (SHM) surface is designed to facilitate recovery of the plastron. The immersed SHM can be "wetted" by gas, even when the plastron is removed. We demonstrate that the injected gas can spread spontaneously along the SHM over a large area, which greatly simplifies the plastron replenishment process. By incorporating a locally coated gas-producing layer, we achieve rapid in situ plastron recovery and long-term immersion stability, extending the plastron lifespan by at least 48 times. We also provide a framework for designing an SHM with suitable structural dimensions for gas spreading. Furthermore, an SHM with asymmetric structural dimensions enables unidirectional gas transport by the capillary pressure difference. This SHM surface shows excellent drag reduction properties (37.2%) and has a high slip recovery coefficient (73.4%) after plastron loss. This facile and scalable method is expected to broaden the range of potential applications involving nonwetting-related fields.
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Affiliation(s)
- Jiaming Wang
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Yuhong Liu
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
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Komatsu H, Inasawa S. Propagation of Freezing in Supercooled Water-In-Antifreeze-Oil Emulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39012055 DOI: 10.1021/acs.langmuir.4c01840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Water-in-oil (W/O) emulsions, in which water droplets are separated by a continuous oil phase, are frequently used in food and cosmetic products. However, the freezing kinetics of W/O emulsions are not yet well understood. In this study, we find that freezing propagates to individual water droplets that are in direct contact with other frozen droplets. When droplets are not in contact, freezing does not propagate even when the emulsions are cooled to -18 °C. Two measures of the perimeter and the area of the frozen droplets in emulsions are defined to evaluate the propagation velocity of freezing using a simple mathematical model. The velocity is highest (4 × 102 μm s-1) at -18 °C, which is lower than the freezing velocity of individual droplets at the same temperature (1.2 × 103 μm s-1). Water-oil interfaces, or a thin layer of oil between droplets, act as a barrier to propagation of freezing. The dependence of the freezing velocity on the degree of supercooling is consistent with results from a previous study; however, the absolute value of the freezing velocity is smaller by a factor of 102. The propagation velocity also depends on the degree of supercooling but its dependence is different from that of the freezing velocity. Features of freezing of water droplets immersed in antifreeze oil are discussed.
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Affiliation(s)
- Hiiro Komatsu
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho Koganei, Tokyo 184-8588, Japan
| | - Susumu Inasawa
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho Koganei, Tokyo 184-8588, Japan
- Department of Applied Physics and Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho Koganei, Tokyo 184-8588, Japan
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6
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Yan W, Li T, Zhang Y, Lin Y, Lan X, Wu J. Thermomechanically Resilient Polyionic Elastomers with Enhanced Anti-Icing Performances. ACS APPLIED MATERIALS & INTERFACES 2024; 16:32693-32701. [PMID: 38873805 DOI: 10.1021/acsami.4c04501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Anti-icing gels inhibit ice formation and accretion; however, current iterations face prevalent drawbacks such as poor strength, weak substrate adhesion, and limited anti-icing properties. Herein, we propose a novel approach to address these challenges by developing a thermomechanical robust polyionic elastomer (PIE) with enhanced anti-icing properties. The PIE surface exhibits an icing delay time up to 5400 s and remains frost-free after exposure to -10 °C for 3.5 h, attributed to the inhibitory effect on ice formation by ions from ILs and the polyelectrolyte network. Moreover, the PIE exhibits remarkable anti-icing durability, with ice adhesion strengths below 35 kPa after undergoing 30 icing/deicing cycle tests at -20 °C. Following sandpaper abrasion (300 cycles), scratching, and heat treatment (100 °C, 16 h), the adhesion strength remains ca. 20 kPa, highlighting its resilience under various thermal and mechanical conditions. This exceptional durability is attributed to the low volatility of the IL and the robust ionic interactions within the PIE network. Furthermore, the PIE demonstrates favorable self-healing properties and strong substrate adhesion in both low-temperature and ambient environments, facilitated by the abundance of hydrogen bonds and electrostatic forces within PIE. This work presents an innovative approach to developing high-performance, durable, and robust anti-icing materials with potential implications across various fields.
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Affiliation(s)
- Weiwei Yan
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- Key Laboratory of Marine Advanced Materials and Applied Technology, Ningbo Institute of Materials and Technology, Chinese Academy of Sciences, Ningbo 315201, China
| | - Tong Li
- Key Laboratory of Marine Advanced Materials and Applied Technology, Ningbo Institute of Materials and Technology, Chinese Academy of Sciences, Ningbo 315201, China
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota 58102, United States
| | - Yi Zhang
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- Key Laboratory of Marine Advanced Materials and Applied Technology, Ningbo Institute of Materials and Technology, Chinese Academy of Sciences, Ningbo 315201, China
| | - Yanwen Lin
- Department of Physics, Research Institute and Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, China
| | - Xijian Lan
- Key Laboratory of Marine Advanced Materials and Applied Technology, Ningbo Institute of Materials and Technology, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jianyang Wu
- Department of Physics, Research Institute and Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen 361005, China
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7
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Qian C, Li X, Li Q, Chen X. Nanofluid Droplet Impact on Rigid and Elastic Superhydrophobic Surfaces. ACS OMEGA 2024; 9:22003-22015. [PMID: 38799373 PMCID: PMC11112574 DOI: 10.1021/acsomega.3c10409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 05/29/2024]
Abstract
Ice accumulation on cold surfaces is a common and serious phenomenon that exists in numerous industrial fields, such as power transmission, wind turbines, and aircraft. Despite recent efforts in mitigating ice accumulation on the cold surface, it remains a challenge to achieve robust anti-icing on the cold surface in terms of nanofluid droplet. Here, we report a rigid superhydrophobic Cu surface and an elastic polydimethylsiloxane (PDMS) superhydrophobic surface to enhance water-repellency performance, characterized by a significant reduction in contact time and a decrease in the spreading ratio. As for the rigid superhydrophobic Cu surface, the underlying mechanism is ascribed to the existence of stable air cushions between the micropillar array, which reduce the contact area and further suppress the heat conduction. As for the elastic PDMS superhydrophobic surface, the rapid detachment of the nanofluid droplet relies on superior surface elasticity, which can further suppress the nanofluid droplet splashing at a high impacting velocity. We believe that this work can provide a new view for the improvement of water-repellency for a wide range of applications.
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Affiliation(s)
| | | | - Qiang Li
- MIIT Key Laboratory of Thermal Control
of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xuemei Chen
- MIIT Key Laboratory of Thermal Control
of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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8
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Zhang A, Yang H, Liu C, Yang J, Yao Y, Zhang W, Pan R, Zhuo Y, Ding J, Hu R, Xue M, Chen P, Gong Y. Icephobic Durability of Molecular Brush-Structured PDMS Soft Coatings. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38619108 DOI: 10.1021/acsami.3c18900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
The accumulation of ice can pose numerous inconveniences and potential hazards, profoundly affecting both human productivity and daily life. To combat the challenges posed by icing, extensive research efforts have been dedicated to the development of low-ice adhesion surfaces. In this study, we harness the power of molecular dynamics simulations to delve into the intricate dynamics of polymer chains and their role in determining the modulus of the material. We present a novel strategy to prepare ultralow-modulus poly(dimethylsiloxane) (PDMS) elastomers with a molecular brush configuration as icephobic materials. The process involves grafting monohydride-terminated PDMS (H-PDMS) as side chains onto backbone chain PDMS with pendant vinyl functional groups to yield a molecular brush structure. The segments of this polymer structure effectively restrict interchain entanglement, thereby rendering a lower modulus compared to traditional linear structures at an equivalent cross-linking density. The developed soft coating exhibits a remarkably ultralow ice adhesion strength of 13.1 ± 1.1 kPa. Even after enduring 50 cycles of icing and deicing, the ice adhesion strength of this coating steadfastly stayed below 16 kPa, showing no notable increase. Importantly, the molecular brush coating applied to glass demonstrated an impressive light transmittance of 92.1% within the visible light spectrum, surpassing the transmittance of bare glass, which was measured at 91.3%. This icephobic coating with exceptional light transmittance offers a wide range of applications and holds significant potential as a practical icephobic material.
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Affiliation(s)
- Awang Zhang
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, People's Republic of China
| | - Heng Yang
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, People's Republic of China
| | - Chao Liu
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, People's Republic of China
| | - Jihua Yang
- Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Yunle Yao
- Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Wei Zhang
- Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Rui Pan
- Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Yizhi Zhuo
- Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - Jianjun Ding
- Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - Rui Hu
- Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - Meng Xue
- Guangdong Banggu Film Coatings Innovation Academy Co., Ltd, Nanxiong 512400, People's Republic of China
| | - Peng Chen
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, People's Republic of China
| | - Yi Gong
- Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
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Wei J, Yang S, Xiao X, Wang J. Hydrophobic Solid Photothermal Slippery Surfaces with Rapid Self-repairing, Dual Anti-icing/Deicing, and Excellent Stability Based on Paraffin and Etching. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7747-7759. [PMID: 38526417 DOI: 10.1021/acs.langmuir.4c00440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Ice and snow disasters have greatly affected both the global economy and human life, and the search for efficient and stable anti-icing/deicing coatings has become the main goal of much research. Currently, the development and application of anti-icing/deicing coatings are severely limited due to their complex preparation, structural fragility, and low stability. This work presents a method for preparing hydrophobic solid photothermal slippery surfaces (SPSS) that exhibit rapid self-repairing, dual anti-icing/deicing properties, and remarkable stability. A photothermal layer of copper oxide (CuO) was prepared by using chemical deposition and etching techniques. The layer was then impregnated with stearic acid and solid paraffin wax to create a hydrophobic solid photothermal slippery surface. This solves the issue of low stability on superhydrophobic surfaces caused by fragile and irretrievable micro/nanostructures. In addition, the underlying photothermal superhydrophobic surface provides good anti-icing/deicing properties even if the paraffin on the surface evaporates or is lost during operation. The findings indicate that when subjected to simulated light irradiation, the coating's surface temperature increases to 80 °C within 12 min. The self-repair process is completed rapidly in 170 s, and at -15 °C, it takes only 201 s for the ice on the surface to melt completely. The surface underneath the paraffin exhibited good superhydrophobic properties, with a contact angle (CA) of 154.1° and a sliding angle (SA) of 6.8° after the loss of paraffin. Simultaneously, the surface's mechanical stability and durability, along with its self-cleaning and antifouling properties, enhance its service life. These characteristics provide promising opportunities for practical applications that require long-term anti-icing/deicing surfaces.
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Affiliation(s)
- Jue Wei
- Key Laboratory of Materials and Surface Technology (Ministry of Education), School of Materials Science and Engineering, Xihua University, Chengdu 610039, People's Republic of China
| | - Siqi Yang
- Key Laboratory of Materials and Surface Technology (Ministry of Education), School of Materials Science and Engineering, Xihua University, Chengdu 610039, People's Republic of China
| | - Xin Xiao
- Key Laboratory of Materials and Surface Technology (Ministry of Education), School of Materials Science and Engineering, Xihua University, Chengdu 610039, People's Republic of China
| | - Jian Wang
- Key Laboratory of Materials and Surface Technology (Ministry of Education), School of Materials Science and Engineering, Xihua University, Chengdu 610039, People's Republic of China
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Weng W, Zheng X, Tenjimbayashi M, Watanabe I, Naito M. De-icing performance evolution with increasing hydrophobicity by regulating surface topography. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2024; 25:2334199. [PMID: 38572412 PMCID: PMC10989202 DOI: 10.1080/14686996.2024.2334199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 03/19/2024] [Indexed: 04/05/2024]
Abstract
It is of great significance to grasp the role of surface topography in de-icing, which however remains unclear yet. Herein, four textured surfaces are developed by regulating surface topography while keeping surface chemistry and material constituents same. Specifically, nano-textures are maintained and micro-textures are gradually enlarged. The resultant ice adhesion strength is proportional to a topography parameter, i.e. areal fraction of the micro-textures, owing to the localized bonding strengthening, which is verified by ice detachment simulation using finite element method. Moreover, the decisive topography parameter is demonstrated to be determined by the interfacial strength distribution between ice and test surface. Such parameters vary from paper to paper due to different interfacial strength distributions corresponding to respective situations. Furthermore, since hydrophobic and de-icing performance may rely on different topography parameters, there is no certain relationship between hydrophobicity and de-icing.
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Affiliation(s)
- Wei Weng
- Research Center for Macromolecules and Biomaterials, National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Xiaoyang Zheng
- Center for Basic Research on Materials, National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Mizuki Tenjimbayashi
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Ikumu Watanabe
- Center for Basic Research on Materials, National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Masanobu Naito
- Research Center for Macromolecules and Biomaterials, National Institute for Materials Science (NIMS), Tsukuba, Japan
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11
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Zhang H, Du H, Zhu D, Zhao H, Zhang X, He F, Wang L, Lv C, Hao P. Ice Adhesion Properties on Micropillared Superhydrophobic Surfaces. ACS APPLIED MATERIALS & INTERFACES 2024; 16:11084-11093. [PMID: 38362761 DOI: 10.1021/acsami.3c18852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
In this work, we investigate the freezing behavior and ice adhesion properties of sessile drops on micropillared superhydrophobic surfaces (SHSs) with various sizes, which are of practical importance for anti/deicing. First of all, it is demonstrated that the recalescence is related only to the supercooling degree of drops but not to the geometrical parameters of micropillars. The freezing time of sessile drops first increases and then decreases with the area fraction of the SHSs, which demonstrates the nonmonotonic dependence of the icing time on the area fraction. Moreover, the influence of the geometrical parameters of the micropillars on the ice adhesion is discussed. With the decrease of the substrate temperature, the wetting state of the adhesive ice can be transformed from the Cassie ice to the Wenzel ice. For the Cassie ice, the adhesive force is proportional to the area fraction of the SHSs. Interestingly, experimental results show that there exist two interfacial debonding modes of the Wenzel ice: translational debonding and rotational debonding. Furthermore, it is found that the rotational debonding mode contributes to a much lower adhesive force between the ice and the micropillared surface compared to that of the translational debonding mode. By analyzing the critical interfacial energy release rate of the two modes, we deduce the threshold between the two modes, which is quantified as the geometrical parameters of the micropillars. In addition, quantitative relations between the geometrical parameters and the adhesion strengths of the two modes are also obtained. We envision that this work would shed new light on the design optimization of anti/deicing materials.
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Affiliation(s)
- Haixiang Zhang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
| | - Hongcheng Du
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
- Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
| | - Dongyu Zhu
- AVIC Aerodynamics Research Institute, Shenyang, Liaoning 110034, China
| | - Huanyu Zhao
- AVIC Aerodynamics Research Institute, Shenyang, Liaoning 110034, China
| | - Xiwen Zhang
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
| | - Feng He
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
| | - Lin Wang
- Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
| | - Cunjing Lv
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
- Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
| | - Pengfei Hao
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
- School of Materials Science and Engineering, AVIC Aerodynamics Research Institute Joint Research Center for Advanced Materials and Anti-Icing, Tsinghua University, Beijing 100084, China
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12
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Gu W, Xia Y, Li L, Zhang Y, Wu X, Gu L, Ji Y, Wang W, Deng W, Lv X, Wang X, Yu X, Zhang Y. Damage Tolerance of Superhydrophobic Coatings with Binary Cooperative Cells for Water Harvesting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2307561. [PMID: 37967348 DOI: 10.1002/smll.202307561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/17/2023] [Indexed: 11/17/2023]
Abstract
Multifunction superhydrophobic coatings that facilitate water harvesting are attractive for addressing the daunting water crisis, yet, they are caught in a double bind when their durability is considered, as durable coatings will require both tough micro-textures to survive concentrated stress and high-surface-energy chemistry to form chemical bonds within the matrix. To date, a universal bulk-phase coating that combines multifunctionality, ultra-durability, and fabrication feasibility remains challenging. Here, a binary cooperative cell design is reported that can solve the contradiction between the multifunctionality and durability requirements of superhydrophobic coatings. In this strategy, mechanochemically tailored cells with releasable nanoseeds are infused in the common matrix, which serves both as a versatile chemical bridge to achieve strong bonds within the coating building blocks, and as an instantaneous self-repairing generator to improve durability. Such a strategy significantly boosted the wear resistance and outdoor stability of the coatings by over 30-100 and 18 folds, respectively, compared with conventional coatings. The coating is applied to the sustainable application, i.e., enhancing the water collection efficiency by at least 1000% even after harsh abrasion. The strategy will broaden the vision in handling the dilemma properties among functional coatings and promote the application of superhydrophobic coatings in extreme environments.
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Affiliation(s)
- Wancheng Gu
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
- The 723 Institute of CSSC, Yangzhou, 225101, P. R. China
| | - Yage Xia
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Long Li
- The 723 Institute of CSSC, Yangzhou, 225101, P. R. China
| | - Yu Zhang
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Xuequn Wu
- The 723 Institute of CSSC, Yangzhou, 225101, P. R. China
| | - Linwei Gu
- The 723 Institute of CSSC, Yangzhou, 225101, P. R. China
| | - Yanzheng Ji
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Wei Wang
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Weilin Deng
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Xinyu Lv
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Xikui Wang
- School of Mechanical Engineering, Guizhou University, Guiyang, 550025, P. R. China
| | - Xinquan Yu
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Youfa Zhang
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
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13
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Gu W, Li W, Zhang Y, Xia Y, Wang Q, Wang W, Liu P, Yu X, He H, Liang C, Ban Y, Mi C, Yang S, Liu W, Cui M, Deng X, Wang Z, Zhang Y. Ultra-durable superhydrophobic cellular coatings. Nat Commun 2023; 14:5953. [PMID: 37741844 PMCID: PMC10517967 DOI: 10.1038/s41467-023-41675-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 09/06/2023] [Indexed: 09/25/2023] Open
Abstract
Developing versatile, scalable, and durable coatings that resist the accretion of matters (liquid, vapor, and solid phases) in various operating environments is important to industrial applications, yet has proven challenging. Here, we report a cellular coating that imparts liquid-repellence, vapor-imperviousness, and solid-shedding capabilities without the need for complicated structures and fabrication processes. The key lies in designing basic cells consisting of rigid microshells and releasable nanoseeds, which together serve as a rigid shield and a bridge that chemically bonds with matrix and substrate. The durability and strong resistance to accretion of different matters of our cellular coating are evidenced by strong anti-abrasion, enhanced anti-corrosion against saltwater over 1000 h, and maintaining dry in complicated phase change conditions. The cells can be impregnated into diverse matrixes for facile mass production through scalable spraying. Our strategy provides a generic design blueprint for engineering ultra-durable coatings for a wide range of applications.
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Affiliation(s)
- Wancheng Gu
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Wanbo Li
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, P. R. China.
- Interdisciplinary Research Center, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.
| | - Yu Zhang
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Yage Xia
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Qiaoling Wang
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Wei Wang
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Ping Liu
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Xinquan Yu
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Hui He
- School of Energy and Environment, Southeast University, Nanjing, 210096, P. R. China
| | - Caihua Liang
- School of Energy and Environment, Southeast University, Nanjing, 210096, P. R. China
| | - Youxue Ban
- School of Civil Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Changwen Mi
- School of Civil Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Sha Yang
- Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Wei Liu
- Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Miaomiao Cui
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, P. R. China
| | - Xu Deng
- Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen, 518110, P. R. China.
| | - Zuankai Wang
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, P. R. China.
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, 999077, P. R. China.
| | - Youfa Zhang
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China.
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14
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Huang J, Li D, Peng Z, Zhang B, Yao Y, Chen S. High-Efficient Anti-Icing/Deicing Method Based on Graphene Foams. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43026-43037. [PMID: 37647497 DOI: 10.1021/acsami.3c09360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Anti-icing/deicing has always been a focal issue in modern industries. A novel anti-icing/deicing material based on graphene foams (GF) is prepared in this paper, which integrates multiple functions, including electrothermal conversion, photothermal conversion, and superhydrophobicity. The GF sheet is used as a bottom layer bonded on the protected substrate, which is covered by a polymeric composite coating filled with TiN and SiO2 nanoparticles. Electric heating and light heating experiments are performed to study the anti-icing/deicing performances of such a GF-based material. It is found that, under the unique action of electric fields, a voltage of only 1 V is needed to increase the surface temperature from minus tens of degrees to the one above zero within 400 s, which is much lower than their previous counterparts of more than 10 V to achieve the same unfreezing effect. A slight increase of the applied voltage to 1.5 V can even result in a remarkable increase of the surface temperature from room temperature to more than 150 °C within 200 s, in contrast to existing electric heating techniques to attain peak temperatures of about 100 °C at the expense of tens of volts. Such performances enable the GF-based material to achieve an outstanding electrothermal energy conversion rate of more than 90%. Furthermore, with the help of sunlight illumination in addition to the electric power, not only can the critical voltage to prevent icing be reduced but also a much more rapid and adequate removal of ice or frost from the surface can be realized compared with the deicing/defrosting performance under either electric or light field alone. All of these results demonstrate the obvious advantages of the present method in superior energy utilization efficiency and universal applicability to dark and sunlight environments, which should be particularly useful for at-all-cost protection of key components in industrial equipment from icing.
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Affiliation(s)
- Jianan Huang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Dawei Li
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Zhilong Peng
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Bo Zhang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Yin Yao
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
| | - Shaohua Chen
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
- Beijing Key Laboratory of Lightweight Multi-Functional Composite Materials and Structures, Beijing Institute of Technology, Beijing 100081, China
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15
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Mund A, Nayse AK, Das A. Design of a Liquid Impregnated Surface with a Stable Lubricant Layer in a Mixed Water/Oil Environment for Low Hydrate Adhesion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11964-11974. [PMID: 37431818 DOI: 10.1021/acs.langmuir.3c00320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Clathrate hydrate is a naturally occurring icelike solid that forms in the water phase under suitable temperature and pressure conditions in the presence of one or more hydrophobic molecules. It also forms inside the oil and gas pipes, leading to higher pumping cost, flow blockage, and even catastrophic accidents. Engineered surfaces with low hydrate adhesion can provide an effective solution to this problem. Liquid impregnated surfaces are examples of engineered surfaces that have already shown tremendous potential for reducing the nucleation and adhesion of solids. Here, we report the design and synthesis of liquid impregnated surfaces with extremely low hydrate adhesion under an oil and water mixed environment. The most challenging aspect of designing these surfaces was to stabilize a lubricant layer simultaneously under water and oil. A detailed methodology to make such lubricant-stable surfaces from a theoretical perspective was described and experimentally validated for lubricant stability. Experimental measurements on such surfaces showed extremely low hydrate accumulation and 1 order of magnitude or more reduction in hydrate adhesion force.
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Affiliation(s)
- Abhishek Mund
- School of Mechanical Sciences, Indian Institute of Technology (IIT) Goa, GEC Campus, Farmagudi, Ponda, Goa 403401, India
| | - Amit K Nayse
- School of Mechanical Sciences, Indian Institute of Technology (IIT) Goa, GEC Campus, Farmagudi, Ponda, Goa 403401, India
| | - Arindam Das
- School of Mechanical Sciences, Indian Institute of Technology (IIT) Goa, GEC Campus, Farmagudi, Ponda, Goa 403401, India
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16
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Huang K, Sun R, Wang J, Shi X, Lei H. Anti-Condensation Performance of a New Superhydrophobic Coating for Pavements. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5793. [PMID: 37687484 PMCID: PMC10488364 DOI: 10.3390/ma16175793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023]
Abstract
Superhydrophobic coating ice suppression is an advanced and durable technology that shows great potential for application on pavements. Although many researchers have conducted experimental and theoretical validations to confirm the effectiveness of superhydrophobic surfaces in actively suppressing ice formation, there are still some who remain skeptical. They argue that the roughness of the surface may increase ice adhesion due to the mechanical interlocking effect of condensation droplets in low-temperature and high-humidity environments. In this study, we present a comprehensive investigation of a novel superhydrophobic coating specifically designed for pavement surfaces, aiming to address the question of its active anti-icing/ice-sparing capabilities in a condensing environment. The changes in contact angle before and after condensation for four material surfaces with varying wettability were investigated, as well as the morphology and ice adhesion of liquid water after it freezes on the material surface. The findings reveal that the proposed superhydrophobic coating for pavements effectively prevents condensate droplets from infiltrating the surface structure, resulting in delaying the surface icing time and reducing the attachment strength of the ice.
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Affiliation(s)
- Kaijian Huang
- College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China; (R.S.); (J.W.)
| | - Ruiyu Sun
- College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China; (R.S.); (J.W.)
| | - Jiaqing Wang
- College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China; (R.S.); (J.W.)
| | - Xijun Shi
- Ingram School of Engineering, Texas State University, San Marcos, TX 78666, USA;
| | - Hechang Lei
- Beijing Key Laboratory of Opto-Electronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing 100872, China;
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17
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Xiang H, Yuan Y, Zhu T, Dai X, Zhang C, Gai Y, Liao R. Anti-Icing Mechanism for a Novel Slippery Aluminum Stranded Conductor. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37413794 DOI: 10.1021/acsami.3c04797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
The icing of transmission conductor seriously threatens the safe operation of power grids. Slippery lubricant-infused porous surface (SLIPS) has shown great potential for anti-icing applications. However, aluminum stranded conductors have complex surfaces, and the current SLIPSs are almost prepared and studied on small flat plates. Herein, the construction of SLIPS on the conductor was realized through anodic oxidation and the anti-icing mechanism of the slippery conductor was studied. Compared to the untreated conductor, the SLIPS-conductor reduces the icing weight by 77% in the glaze icing test and shows very low ice-adhesion strength (7.0 kPa). The excellent anti-icing performance of the slippery conductor is attributed to the droplet impact dynamics, icing delay, and lubricant stability. The dynamic behavior of water droplets is most affected by the complex shape of the conductor surface. Specifically, the impact of the droplet on the conductor surface is asymmetric and the droplet can slide along the depression in low-temperature and high-humidity environments. The stable lubricant of SLIPS increases both the nucleation energy barriers and the heat transfer resistance, which greatly delays the freezing time of droplets. Besides, the nanoporous substrate, the compatibility of the substrate with the lubricant, and the lubricant characteristics contribute to the lubricant stability. This work provides theoretical and experimental guidance on anti-icing strategies for transmission lines.
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Affiliation(s)
- Huiying Xiang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Yuan Yuan
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Tao Zhu
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Xu Dai
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
| | - Cheng Zhang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Yu Gai
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Ruijin Liao
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
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18
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Wei X, Niu X. Recent Advances in Superhydrophobic Surfaces and Applications on Wood. Polymers (Basel) 2023; 15:polym15071682. [PMID: 37050296 PMCID: PMC10097333 DOI: 10.3390/polym15071682] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/25/2023] [Accepted: 03/26/2023] [Indexed: 03/30/2023] Open
Abstract
Superhydrophobic substances were favored in wood protection. Superhydrophobic treatment of wood is of great significance for improving the service life of wood and expanding its application fields, such as improving dimensional stability, durability, UV stability, and reducing wetting. The superhydrophobic phenomenon is attributed to the interaction of micro/nano hierarchical structure and low surface energy substances of the wood surface. This is the common method for obtaining superhydrophobic wood. The article introduces the common preparation methods of superhydrophobic wood material coatings and their mechanisms. These techniques include lithography, sol–gel methods, graft copolymerization, chemical vapor deposition, etc. The latest research progress of superhydrophobic wood material coatings application at domestic and overseas is reviewed, and the current status of superhydrophobic coating application in wood materials and construction is summarized. Finally, superhydrophobic on wood in the field of applied research is presented, and the development trend in the field of functional improvement of wood is foreseen.
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19
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Hoque MJ, Yan X, Qiu H, Qin Y, Du X, Stermer J, Miljkovic N. Durability and Degradation Mechanisms of Antifrosting Surfaces. ACS APPLIED MATERIALS & INTERFACES 2023; 15:13711-13723. [PMID: 36862945 DOI: 10.1021/acsami.2c21928] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Rapid implementation of renewable energy technologies has exacerbated the potential for economic loss and safety concerns caused by ice and frost accretion, which occurs on the surfaces of wind turbine blades, photovoltaic panels, and residential and electric vehicle air-source heat pumps. The past decade has seen advances in surface chemistry and micro- and nanostructures that can promote passive antifrosting and enhance defrosting. However, the durability of these surfaces remains the major obstacle preventing real-life applications, with degradation mechanisms remaining poorly understood. Here, we conducted durability tests on antifrosting surfaces, including superhydrophobic, hydrophobic, superhydrophilic, and slippery liquid-infused surfaces. For superhydrophobic surfaces, we demonstrate durability with progressive degradation for up to 1000 cycles of atmospheric frosting-defrosting and month-long outdoor exposure tests. We show that progressive degradation, as reflected by increased condensate retention and reduced droplet shedding, results from molecular-level degradation of the low-surface-energy self-assembled monolayer (SAM). The degradation of the SAM leads to local high-surface-energy defects, which further deteriorate the surface by promoting accumulation of atmospheric particulate matter during cyclic condensation, frosting, and melt drying. Furthermore, cyclic frosting and defrost tests demonstrate the durability and degradation mechanisms of other surfaces to show, for example, the loss of water affinity of superhydrophilic surfaces after 22 days due to atmospheric volatile organic compound (VOC) adsorption and significant lubricant drainage for lubricant-infused surfaces after 100 cycles. Our work reveals the degradation mechanism of functional surfaces during exposure to long-term frost-defrost cycling and elucidates guidelines for the development of future surfaces for real-life antifrosting/icing applications.
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Affiliation(s)
- Muhammad Jahidul Hoque
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
| | - Xiao Yan
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
| | - Haoyun Qiu
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
| | - Yimeng Qin
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
| | - Xuzhi Du
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
| | - Jackson Stermer
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
| | - Nenad Miljkovic
- Department of Mechanical Science and Engineering, University of Illinois, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801, United States
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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20
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Arivalagan V, Meera M, Devaraj Stephen L, Soundarrajan M, Gunasekaran SG. Phthalide cardo chain extended imine skeletal linked maleimido end capped nanotitania reinforced novel polybenzoxazine (nTiO 2/PBZ) hybrid nanocomposites. HIGH PERFORM POLYM 2023. [DOI: 10.1177/09540083231162516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
A new class of nanotitania reinforced polybenzoxazine (nTiO2/PBZ) hybrid nanocomposites was synthesized using newly designed phthalide cardo chain extended imine skeletal linked maleimido end capped polybenzoxazine (PHM-PBZ) and nTiO2 through in-situ sol-gel method. The formation of hybrid nanocomposites was confirmed by NMR and FT-IR spectra. The structurally stable nTiO2 present in the nTiO2/PBZ hybrids accounted their exceptional thermal stability and good char yield. The restricted motion of flexible polymeric chain resulted from the inclusion of nTiO2 in the PBZ system increased the glass transition temperature ( T g) to a higher percentage than that of neat PBZ system. With the successive enhancement in the incorporation of nTiO2, the synthesized nanocomposites exhibited better thermal stability, higher flame retardancy and lesser water absorption behaviour than the of neat PBZ. The sequential increments in the loading level of nTiO2 onto the PBZ matrices caused the lower value of dielectric constant than that of neat PBZ. The homogeneity and successful dispersion of the nTiO2 fillers in the PBZ matrix were ascertained from the strong fluorescent emissions observed in the wavelength range of 300–550 nm through optical studies. Scanning electron microscope and transmission electron microscopic micrographs evidenced the successful incorporation of nTiO2 as can be seen from the different morphology at the nanoscale level in the PBZ matrix. This kind of structurally designed nTiO2/PBZ nanocomposites may find multifaceted applications in the form of adhesives, encapsulants, matrices and sealants and in the fields of automobile and microelectronics applications for better performance and longevity.
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Affiliation(s)
- V Arivalagan
- Department of Chemistry, SRM Valliammai Engineering College (Autonomous), Kattankulathur, India
| | - M Meera
- Department of Chemistry, SRM Valliammai Engineering College (Autonomous), Kattankulathur, India
| | - L Devaraj Stephen
- Department of Chemistry, SRM Valliammai Engineering College (Autonomous), Kattankulathur, India
| | - M Soundarrajan
- Department of Chemistry, SRM Valliammai Engineering College (Autonomous), Kattankulathur, India
| | - S G Gunasekaran
- Department of Chemistry, SRM Valliammai Engineering College (Autonomous), Kattankulathur, India
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21
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Tian Z, Wang L, Zhu D, Chen C, Zhao H, Peng R, Zhang H, Fan P, Zhong M. Passive Anti-Icing Performances of the Same Superhydrophobic Surfaces under Static Freezing, Dynamic Supercooled-Droplet Impinging, and Icing Wind Tunnel Tests. ACS APPLIED MATERIALS & INTERFACES 2023; 15:6013-6024. [PMID: 36656131 DOI: 10.1021/acsami.2c15253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Overcoming ice accretion on external aircraft wing surfaces plays a crucial role in aviation, and developing environmentally friendly passive anti-icing surfaces is considered to be a promising strategy. Superhydrophobic surfaces (SHSs) have attracted increasing attention due to their potential advantages of keeping the airframe dry without causing additional aerodynamic losses. However, the passive anti-icing performances of SHSs reported to date varied a lot under different icing test conditions. Therefore, a systematic investigation is necessary to elucidate the icing conditions where SHSs can remain effective and pave the way for SHSs toward practical anti-icing applications. Herein, we designed and fabricated a typical type of SHS featuring dual-scale hierarchical structures with arrayed micromountains (with both spacings and heights of tens of micrometers) covered by single-scale sandy-corrugation-like periodic structures (with both spacings and heights of only several micrometers) (termed SS1). Its anti-icing performances under three representative icing conditions, including static water freezing, dynamic supercooled-droplet impinging, and icing wind tunnel conditions, were comparatively investigated. The SS1 SHS maintained a lower static ice-adhesion strength (<60 kPa even after 50 deicing cycles at temperatures as low as -25 °C), which was attributed to a cumulative cracking effect facilitating the ice detachment. Within the laboratory dynamic icing tests, the SS1 SHSs with micromountain heights of 20-30 μm performed optimally in the antiadhesion of supercooled droplets (at an impinging velocity of 3.4 m/s and temperatures of -5 to -25 °C). In spite of the significant anti-icing performances of the SS1 SHSs in both static and dynamic laboratory tests, they could hardly sustain reliable passive anti-icing performances in harsher icing wind tunnel tests with supercooled droplets impinging their surfaces at velocities of up to 50 m/s at a temperature of -5 °C for 10 min. This study can inspire the development of improved SHSs for achieving satisfactory anti-icing performances in real-aviation conditions.
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Affiliation(s)
- Ze Tian
- Laser Materials Processing Research Center, Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Joint Research Center for Advanced Materials and Anti-icing of Tsinghua University (SMSE)-AVIC Aerodynamics Research Institute, School of Materials Science and Engineering, Tsinghua University, Beijing100084, China
| | - Lizhong Wang
- Laser Materials Processing Research Center, Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Joint Research Center for Advanced Materials and Anti-icing of Tsinghua University (SMSE)-AVIC Aerodynamics Research Institute, School of Materials Science and Engineering, Tsinghua University, Beijing100084, China
| | - Dongyu Zhu
- Shenyang Key Laboratory of Aircraft Icing and Ice Protection, AVIC Aerodynamics Research Institute, Shenyang, Liaoning110034, China
| | - Changhao Chen
- Laser Materials Processing Research Center, Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Joint Research Center for Advanced Materials and Anti-icing of Tsinghua University (SMSE)-AVIC Aerodynamics Research Institute, School of Materials Science and Engineering, Tsinghua University, Beijing100084, China
| | - Huanyu Zhao
- Shenyang Key Laboratory of Aircraft Icing and Ice Protection, AVIC Aerodynamics Research Institute, Shenyang, Liaoning110034, China
| | - Rui Peng
- Laser Materials Processing Research Center, Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Joint Research Center for Advanced Materials and Anti-icing of Tsinghua University (SMSE)-AVIC Aerodynamics Research Institute, School of Materials Science and Engineering, Tsinghua University, Beijing100084, China
| | - Hongjun Zhang
- Laser Materials Processing Research Center, Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Joint Research Center for Advanced Materials and Anti-icing of Tsinghua University (SMSE)-AVIC Aerodynamics Research Institute, School of Materials Science and Engineering, Tsinghua University, Beijing100084, China
| | - Peixun Fan
- Laser Materials Processing Research Center, Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Joint Research Center for Advanced Materials and Anti-icing of Tsinghua University (SMSE)-AVIC Aerodynamics Research Institute, School of Materials Science and Engineering, Tsinghua University, Beijing100084, China
| | - Minlin Zhong
- Laser Materials Processing Research Center, Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Joint Research Center for Advanced Materials and Anti-icing of Tsinghua University (SMSE)-AVIC Aerodynamics Research Institute, School of Materials Science and Engineering, Tsinghua University, Beijing100084, China
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22
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Jiang S, Diao Y, Yang H. Recent advances of bio-inspired anti-icing surfaces. Adv Colloid Interface Sci 2022; 308:102756. [PMID: 36007284 DOI: 10.1016/j.cis.2022.102756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/16/2022] [Accepted: 08/11/2022] [Indexed: 11/25/2022]
Abstract
The need for improved anti-icing surfaces is the demand of the time and closely related to many important aspects of our lives as surface icing threatens not only industrial production but also human safety. Freezing on a cold surface is usually a heterogeneous nucleation process induced by the substrate. Creating an anti-icing surface is mainly achieved by changing surface morphology and chemistry to regulate the interaction between the surface and the water/ice to inhibit freezing on the surface. In this paper, recent research progress in the creation of biomimetic anti-icing surfaces is reviewed. Firstly, basic strategies of bionic anti-icing are introduced, and then bionic anti-icing surface strategies are reviewed according to four aspects: the process of ice formation, including condensate self-removing, inhibiting ice nucleation, reducing ice adhesion, and melting accumulated ice on the surface. The remaining challenges and the direction of future development of biomimetic anti-icing surfaces are also discussed.
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Affiliation(s)
- Shanshan Jiang
- School of Materials Science and Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, China
| | - Yunhe Diao
- School of Materials Science and Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, China
| | - Huige Yang
- School of Materials Science and Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, China.
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23
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Zhao X, Zarasvand KA, Pope C, Golovin K. Thermal Insulation and Superhydrophobicity Synergies for Passive Snow Repellency. ACS APPLIED MATERIALS & INTERFACES 2022; 14:21657-21667. [PMID: 35471928 DOI: 10.1021/acsami.2c02236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The adhesion mechanisms and fracture mechanics of snow on solid surfaces are complex, making the design of an all-purpose snow-repellent surface that is applicable to multiple real-life situations a considerable and unsolved challenge. In this study, we focus on the most difficult-to-remove snow accretion scenario─the formation of a highly adhesive meltwater ice layer at the snow-solid interface. This ice layer originates from snow melting on an initially above 0 °C surface, followed by refreezing in a subzero environment. The complete removal of this ice layer is especially challenging and usually requires active and energy-intensive methods. By combining the characteristics of thermal insulation and superhydrophobicity on solid surfaces, we successfully prevent snow melting and its subsequent refreezing to this highly adhesive ice layer, enabling the complete passive removal of snow from solid surfaces. Our snow-repellent platform is designed using thin superhydrophobic sheets covering solid surfaces, separated by a thermally insulative layer (air gap or aerogel). In contrast to conventional icephobic surfaces, the synergies between thermal insulation and superhydrophobicity provide a tailored route specifically toward the design of passive snow-repellent surfaces.
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Affiliation(s)
- Xiaoxiao Zhao
- Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | | | - Cory Pope
- Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Kevin Golovin
- Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
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24
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Mandal P, Ivvala J, Arora HS, Ghosh SK, Grewal HS. Bioinspired micro/nano structured aluminum with multifaceted applications. Colloids Surf B Biointerfaces 2022; 211:112311. [PMID: 34979496 DOI: 10.1016/j.colsurfb.2021.112311] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 11/26/2021] [Accepted: 12/26/2021] [Indexed: 10/19/2022]
Abstract
Inspired by many biological systems such as lotus leaves, insect wings and rose petals, great attention has been devoted to the study and fabrication of artificial superhydrophobic surfaces with multiple functionalities. In the present study, a simple and ecological synthesis route has been employed for large scale fabrication of self-assembled, sustainable nanostructures on unprocessed and micro imprinted aluminum surfaces named 'Nano' and 'Hierarchy'. The processed samples show extreme wettability ranging from superhydrophilicity to superhydrophobicity depending on post-processing conditions. The densely packed ellipsoidal nanostructures exhibited superhydrophobicity with excellent water, bacterial and dust repellency when modified by low surface energy material 1H,1H,2H,2H-perfluorooctyltriethoxysilane (FOTES), characterized by a static contact angle of 163 ± 1° and contact angle hysteresis (CAH) ~3°. These coated surfaces show significant corrosion resistance with current density of 6 nA/cm2 which is 40 times lower than unprocessed counterpart and retain chemical stability after prolonged immersion in corrosive media. These surfaces show excellent self-cleaning ability with significantly low water consumption (< 0.1 µl/mm2-mg) and prevent biofouling which ensures its applicability in biological environment and marine components. The nanostructured superhydrophilic aluminum shows maximum antibacterial activity due to disruption of cell membrane. This work can offer a simple strategy to large scale fabrication of multifunctional biomimetic metallic surfaces.
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Affiliation(s)
- Priya Mandal
- Department of Physics, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Jayanth Ivvala
- Surface Science and Tribology Lab, Department of Mechanical Engineering, School of Engineering, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Harpreet S Arora
- Surface Science and Tribology Lab, Department of Mechanical Engineering, School of Engineering, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Sajal K Ghosh
- Department of Physics, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Harpreet S Grewal
- Surface Science and Tribology Lab, Department of Mechanical Engineering, School of Engineering, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India.
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25
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Tas M, Musa UG, Ahmed I, Xu F, Smartt C, Hou X. Functionalised SiO2 modified icephobic nanocomposite electrospun membranes for outdoor electromagnetic shielding applications. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124499] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Zeng C, Shen Y, Tao J, Chen H, Wang Z, Liu S, Lu D, Xie X. Rationally Regulating the Mechanical Performance of Porous PDMS Coatings for the Enhanced Icephobicity toward Large-Scale Ice. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:937-944. [PMID: 34894687 DOI: 10.1021/acs.langmuir.1c02205] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Ice accumulation on various surfaces in low-temperature and high-humidity environments is still a major challenge for several engineering applications. Herein, we fabricated a kind of PDMS coating with the introduction of porous structures under the surface by a two-step curing and phase separation method. The coatings with no further surface modification showed good hydrophobicity and icephobicity, and the typical ice adhesion strength was down to 40 kPa with a water contact angle of 116.5°. More than that, the porous PDMS coatings showed extraordinary icephobicity, especially toward large-scale ice (>10 cm2). In this case, the large-scale ice layer can be rapidly removed under a small external deicing force in a form of interface crack propagation rather than whole direct fracture. It was confirmed that by regulating the pore size and porosity of PDMS coatings properly, the stiffness mismatch between coatings and ice can be controlled to induce the initiation of interfacial cracks. On this basis, under the condition of a large-scale icing area, a small external deicing force can cause an increased surface stress concentration, and the formed interface cracks can propagate quickly, resulting in the ice layer falling off easily. In addition, under the influence of the size effect, ice can be removed without an additional force, and the minimum external force (per unit width) can be only 60 N/cm. This paper proposes that prefabricating a large number of microcracks at the interface can significantly weaken the bonding between ice and coatings, that is, reduce the fracture toughness. The new coatings have a remarkable effect toward large-scale icing.
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Affiliation(s)
- Chaojiao Zeng
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
| | - Yizhou Shen
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
| | - Jie Tao
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
| | - Haifeng Chen
- Department of Materials Chemistry, Qiuzhen School, Huzhou University, 759# East 2nd Road, Huzhou 313000, P. R. China
| | - Zhe Wang
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
| | - Senyun Liu
- Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Development Center, Mianyang 621000, P. R. China
| | - Daipeng Lu
- Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, China
| | - Xinyu Xie
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao St., Nanjing 210016, P. R. China
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27
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Boinovich LB, Emelyanenko KA, Emelyanenko AM. Superhydrophobic versus SLIPS: Temperature dependence and the stability of ice adhesion strength. J Colloid Interface Sci 2022; 606:556-566. [PMID: 34416451 DOI: 10.1016/j.jcis.2021.08.030] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 10/20/2022]
Abstract
HYPOTHESIS Ice adhesion to solids, being affected by the ice/solid intermolecular interactions and structure of ice surface layer is dependent on temperature, and ice surface layer equilibration time. EXPERIMENTS A new centrifugal method of shear ice adhesion strength measurement with accurate temperature control on each stage from ice formation on test surfaces to the adhesion measurement is applied to study ice adhesion to superhydrophobic and slippery surfaces. The determinative advantage of the developed method is related to monitoring in one experiment the ice detachment from numerous samples and accurate measuring the rotation frequency for each ice detachment. FINDINGS The following findings will be discussed.
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Affiliation(s)
- Ludmila B Boinovich
- Laboratory of Surface Forces, A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prosp. 31 bldg. 4, Moscow 119071, Russia.
| | - Kirill A Emelyanenko
- Laboratory of Surface Forces, A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prosp. 31 bldg. 4, Moscow 119071, Russia
| | - Alexandre M Emelyanenko
- Laboratory of Surface Forces, A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky prosp. 31 bldg. 4, Moscow 119071, Russia
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28
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Chen F, Wang Y, Tian Y, Zhang D, Song J, Crick CR, Carmalt CJ, Parkin IP, Lu Y. Robust and durable liquid-repellent surfaces. Chem Soc Rev 2022; 51:8476-8583. [DOI: 10.1039/d0cs01033b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This review provides a comprehensive summary of characterization, design, fabrication, and application of robust and durable liquid-repellent surfaces.
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Affiliation(s)
- Faze Chen
- School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
- Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin 300350, China
| | - Yaquan Wang
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK
| | - Yanling Tian
- School of Engineering, University of Warwick, Coventry CV4 7AL, UK
| | - Dawei Zhang
- School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
- Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin 300350, China
| | - Jinlong Song
- School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Colin R. Crick
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK
| | - Claire J. Carmalt
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - Ivan P. Parkin
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - Yao Lu
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK
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29
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Zhuo Y, Chen J, Xiao S, Li T, Wang F, He J, Zhang Z. Gels as emerging anti-icing materials: a mini review. MATERIALS HORIZONS 2021; 8:3266-3280. [PMID: 34842262 DOI: 10.1039/d1mh00910a] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Gel materials have drawn great attention recently in the anti-icing research community due to their remarkable potential for reducing ice adhesion, inhibiting ice nucleation, and restricting ice propagation. Although the current anti-icing gels are in their infancy and far from practical applications due to poor durability, their outstanding prospect of icephobicity has already shed light on a new group of emerging anti-icing materials. There is a need for a timely review to consolidate the new trends and foster the development towards dedicated applications. Starting from the stage of icing, we first survey the relevant anti-icing strategies. The latest anti-icing gels are then categorized by their liquid phases into organogels, hydrogels, and ionogels. At the same time, the current research focuses, anti-icing mechanisms and shortcomings affiliated with each category are carefully analysed. Based upon the reported state-of-the-art anti-icing research and our own experience in polymer-based anti-icing materials, suggestions for the future development of the anti-icing gels are presented, including pathways to enhance durability, the need to build up the missing fundamentals, and the possibility to enable stimuli-responsive properties. The primary aim of this review is to motivate researchers in both the anti-icing and gel research communities to perform a synchronized effort to rapidly advance the understanding and making of gel-based next generation anti-icing materials.
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Affiliation(s)
- Yizhi Zhuo
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Jianhua Chen
- College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Senbo Xiao
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Tong Li
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Feng Wang
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Jianying He
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
| | - Zhiliang Zhang
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway.
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30
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Coral-like silicone nanofilament coatings with extremely low ice adhesion. Sci Rep 2021; 11:20427. [PMID: 34650120 PMCID: PMC8516905 DOI: 10.1038/s41598-021-98215-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 08/02/2021] [Indexed: 11/09/2022] Open
Abstract
Passive icephobic surfaces can provide a cost and energy efficient solution to many icing problems that are currently handled with expensive active strategies. Water-repellent surface treatments are promising candidates for this goal, but commonly studied systems, such as superhydrophobic surfaces and Slippery Liquid Infused Porous Surfaces (SLIPS), still face challenges in the stability and durability of their properties in icing environments. In this work, environmental icing conditions are simulated using an Icing Wind Tunnel, and ice adhesion is evaluated with a Centrifugal Adhesion Test. We show that superhydrophobic coral-like Silicone Nanofilament (SNF) coatings exhibit extremely low ice adhesion, to the point of spontaneous ice detachment, and good durability against successive icing cycles. Moreover, SNFs-based SLIPS show stably low ice adhesion for the whole duration of the icing test. Stability of surface properties in a cold environment is further investigated with water wettability at sub-zero surface temperature, highlighting the effect of surface chemistry on superhydrophobicity under icing conditions.
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31
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Hanh VTH, Truong MX, Tan TQ, Nguyen TB. Nature-inspired slippery polymer thin film for ice-repellent applications. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2021. [DOI: 10.1680/jbibn.21.00027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study, the authors investigated the anti-icing performance of a hierarchical slippery polymer thin film that is inspired by structures of the lotus leaf and Nepenthes pitcher plant. The polymer solution was mixed with the lubricant at the appropriate concentration to achieve slippery properties. The dry etching method followed by the spin-coating process was used to generate a uniform polymer microstructure on the thin film. The polymer nanostructure was then yielded by an additional plasma-etching method using carbon tetrafluoride (CF4) gas. The anti-icing efficiency was then compared with that of the non-functional samples to demonstrate the advantages of combination in all criteria. Moreover, a theoretical prediction based on the free-energy approach was used to measure the nucleation time at the interface and illustrated good agreement with real-time measurement. The results propose a new and facile approach for outdoor anti-icing applications.
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Affiliation(s)
- Vu Thi Hong Hanh
- Faculty of Physics, Thai Nguyen University of Education, Thai Nguyen, Vietnam
| | - Mai Xuan Truong
- Faculty of Chemistry, Thai Nguyen University of Education, Thai Nguyen, Vietnam
| | - Tu Quang Tan
- Faculty of Biology, Thai Nguyen University of Education, Thai Nguyen, Vietnam
| | - Thanh-Binh Nguyen
- Faculty of Physics, Thai Nguyen University of Education, Thai Nguyen, Vietnam
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32
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Park H, Ahmadi SF, Boreyko JB. Using Frost to Promote Cassie Ice on Hydrophilic Pillars. PHYSICAL REVIEW LETTERS 2021; 127:044501. [PMID: 34355925 DOI: 10.1103/physrevlett.127.044501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 05/24/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
We develop a novel approach to suspend ice in the air-trapping Cassie state without requiring any fragile hydrophobic coatings or nanostructures. First, frost was preferentially grown on the tops of hydrophilic aluminum pillars due to their sharp corners and elevation over the noncondensable gas barrier. Subsequently, Cassie ice was formed by virtue of the impacting droplets getting arrested by the upper frost tips. A scaling model reveals that the dynamic pressure of an impacting droplet causes the water to wick inside the porous frost faster than the timescale to impale between the pillars.
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Affiliation(s)
- Hyunggon Park
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - S Farzad Ahmadi
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA
- Department of Mechanical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, USA
| | - Jonathan B Boreyko
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA
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33
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Zhu Z, Zhang Y, Sun DW. Biomimetic modification of freezing facility surfaces to prevent icing and frosting during freezing for the food industry. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.02.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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34
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Wang P, He L, Wang Z. The effect of surface structure and arrangement on wettability of substrate surface. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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McBride SA, Girard HL, Varanasi KK. Crystal critters: Self-ejection of crystals from heated, superhydrophobic surfaces. SCIENCE ADVANCES 2021; 7:7/18/eabe6960. [PMID: 33910891 PMCID: PMC8081363 DOI: 10.1126/sciadv.abe6960] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 03/09/2021] [Indexed: 05/31/2023]
Abstract
Mineral or crystal fouling (the accumulation of precipitants on a material and damage associated with the same) is a pervasive problem in water treatment, thermoelectric power production, and numerous industrial processes. Growing efforts have focused on materials engineering strategies (e.g., superhydrophobicity) to prevent fouling. Here, we present a curious phenomenon in which crystals self-eject from heated, nanotextured superhydrophobic materials during evaporation of saline water drops. These crystal structures (crystal critters) have exceedingly minimal contact with the substrate and thus pre-empt crystal fouling. This unusual phenomenon is caused by cooperative effects of crystallization, evaporative flows, and nanoscale effects. The temperature dependence of the critter effect can be predicted using principles of mass conservation, and we demonstrate that self-propulsion can be generated via temperature gradients, which promote asymmetric growth. The insights on confinement-driven evaporative crystallization can be applied for antifouling by self-ejection of mineral foulants, for drop-based fluidic machines, or even for self-propulsion.
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Affiliation(s)
- Samantha A McBride
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02141, USA
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ, 08540 USA
| | - Henri-Louis Girard
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02141, USA
| | - Kripa K Varanasi
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02141, USA.
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36
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Jo S, Lee H, Jang H, Kim DR. Controlled Integration of Interconnected Pores under Polymeric Surfaces for Low Adhesion and Antiscaling Performance. ACS APPLIED MATERIALS & INTERFACES 2021; 13:13684-13692. [PMID: 33721992 DOI: 10.1021/acsami.1c00123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Low-adhesive surfaces have been highlighted due to the potentials to mitigate fouling issues by preventing unwanted substances from adhering. Realizing superhydrophobicity with 3D surface structures/chemical modifiers or fabricating lubricant-assisted slippery surfaces has been demonstrated to realize low-adhesive surfaces. However, they still need to overcome the transition to Wenzel from Cassie states of droplets on 3D surface structures or the lubricant depletion issues of slippery surfaces for sustainable operations. Herein, we report the fabrication of low-adhesive polymeric surfaces, neither assisted by 3D surface structures/chemical modifiers nor lubricants, which is realized by embedding the interconnected pore networks underneath the top smooth surface using a water steaming method. The fabricated silicone surfaces exhibit low-adhesive properties due to the stress concentration effects generated by the subsurface-structured pores, favorable for easy detachment of the adherent from the surface. Our platform can be exploited to lower adhesion of superhydrophilic surfaces or to achieve ultralow-adhesive properties upon combination with superhydrophobicity. Finally, scale precipitation tests reveal 4.2 times lower scale accumulation of our low-adhesive polymeric surfaces than that in control samples.
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Affiliation(s)
- Sungwon Jo
- School of Mechanical Engineering, Hanyang University, Seoul 04763, South Korea
| | - Haeyeon Lee
- School of Mechanical Engineering, Hanyang University, Seoul 04763, South Korea
| | - Hanmin Jang
- School of Mechanical Engineering, Hanyang University, Seoul 04763, South Korea
| | - Dong Rip Kim
- School of Mechanical Engineering, Hanyang University, Seoul 04763, South Korea
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37
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Icephobic Performance of Multi-Scale Laser-Textured Aluminum Surfaces for Aeronautic Applications. NANOMATERIALS 2021; 11:nano11010135. [PMID: 33430008 PMCID: PMC7827704 DOI: 10.3390/nano11010135] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/04/2021] [Accepted: 01/06/2021] [Indexed: 12/12/2022]
Abstract
Ice-building up on the leading edge of wings and other surfaces exposed to icing atmospheric conditions can negatively influence the aerodynamic performances of aircrafts. In the past, research activities focused on understanding icing phenomena and finding effective countermeasures. Efforts have been dedicated to creating coatings capable of reducing the adhesion strength of ice to a surface. Nevertheless, coatings still lack functional stability, and their application can be harmful to health and the environment. Pulsed laser surface treatments have been proven as a viable technology to induce icephobicity on metallic surfaces. However, a study aimed to find the most effective microstructures for reducing ice adhesion still needs to be carried out. This study investigates the variation of the ice adhesion strength of micro-textured aluminum surfaces treated using laser-based methods. The icephobic performance is tested in an icing wind tunnel, simulating realistic icing conditions. Finally, it is shown that optimum surface textures lead to a reduction of the ice adhesion strength from originally 57 kPa down to 6 kPa, corresponding to a relative reduction of ~90%. Consequently, these new insights will be of great importance in the development of functionalized surfaces, permitting an innovative approach to prevent the icing of aluminum components.
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38
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Ahmadi SF, Spohn CA, Nath S, Boreyko JB. Suppressing Condensation Frosting Using an Out-of-Plane Dry Zone. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:15603-15609. [PMID: 33325712 DOI: 10.1021/acs.langmuir.0c03054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The vapor pressure above ice is lower than that above supercooled water at the same temperature. This inherent hygroscopic quality of ice has recently been exploited to suppress frost growth by patterning microscopic ice stripes along a surface. These vapor-attracting ice stripes prevented condensation frosting from occurring in the intermediate regions; however, the required presence of the sacrificial ice stripes made it impossible to achieve the ideal case of a completely dry surface. Here, we decouple the sacrificial ice from the antifrosting surface by holding an uncoated aluminum surface in parallel with a prefrosted surface. By replacing the overlapping in-plane dry zones with a uniform out-of-plane dry zone, we show that even an uncoated aluminum surface can stay almost completely dry in chilled and supersaturated conditions. Using a blend of experiments and numerical simulations, we show that the critical separation required to keep the surface dry is a function of the ambient supersaturation.
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Affiliation(s)
- S Farzad Ahmadi
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
- Department of Mechanical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Corey A Spohn
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Saurabh Nath
- Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, Virginia 24061, United States
- Physique et Mécanique des Milieux Hétérogènes, UMR 7636 du CNRS, ESPCI, 75005 Paris, France
| | - Jonathan B Boreyko
- Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
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Droplet Impact on the Cold Elastic Superhydrophobic Membrane with Low Ice Adhesion. COATINGS 2020. [DOI: 10.3390/coatings10100964] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The elastic membranes with different surface stiffness were fabricated via spin-coating followed by the laser ablation. The as-fabricated elastic membrane exhibited superhydrophobicity with a rough microstructure. The droplet impacting experiment on the cold elastic superhydrophobic membrane was conducted, and the influence of surface stiffness and impacting speed on the droplet impacting process were investigated. It was found that the elastic superhydrophobic membrane exhibits a robust anti-icing performance compared with the elastic hydrophobic membrane. A lower surface stiffness corresponds to a larger deformation degree of the elastic membrane and to a smaller maximum droplet spreading diameter. Moreover, the contact time decreases with the increase of impacting speed as for the same stiffness of the cold elastic superhydrophobic membrane. The underlying mechanism of the cold elastic membrane with low ice adhesion may be due to the face that the deformation of the superhydrophobic membrane provides an elastic force for the droplet to detach from the surface and thus reduce the heat transfer between the droplet and the surface.
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Kattel S, Scougale WR, Murphy JR, Pasco SR, Ackerman J, Alvarado V, Rice WD. Spectroscopic Determination of Ice-Induced Interfacial Strain on Single-Layer Graphene. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2003892. [PMID: 32986308 DOI: 10.1002/smll.202003892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/31/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
Reliably determining the physical properties of ice (e.g., crystal structure, adhesion strength, interfacial state, and molecular orientation) has proven to be both challenging and highly dependent on experiment-specific conditions, including surface roughness, ice formation, water purity, and measurement method. Here, non-destructive measurements of single-layer graphene (SLG) interfaced with bulk ice are used to determine temperature-dependent, ice-induced strain and estimate ice-created strain elastic density in SLG. The use of SLG enables the precise study of interfacial strain by monitoring the 2D Raman mode. Upon ice formation, a clear, ≈2 cm-1 decrease in the 2D mode frequency is observed, which is ascribed to a 0.012% biaxial tensile shear strain at the ice-SLG interface. From this shear strain value, the ice-created SLG elastic strain energy density is estimated to be 2.4 μJ m-2 . In addition to these Raman strain measurements, intentionally ionized water is used to show that water-mediated charging of the SLG surface manifests itself in a distinctly different manner than ice-induced strain. Finally, the localized nature of the Raman probe is used to map SLG regions with and without ice, suggesting that this method cannot only determine ice-induced interfacial strain, but also correlate ice adhesion properties with surface roughness and topology.
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Affiliation(s)
- Subash Kattel
- Department of Physics and Astronomy, University of Wyoming 1000 E. University Ave., Laramie, WY, 82071, USA
| | - William R Scougale
- Department of Physics and Astronomy, University of Wyoming 1000 E. University Ave., Laramie, WY, 82071, USA
| | - Joseph R Murphy
- Department of Physics and Astronomy, University of Wyoming 1000 E. University Ave., Laramie, WY, 82071, USA
| | - Samuel R Pasco
- Department of Physics and Astronomy, University of Wyoming 1000 E. University Ave., Laramie, WY, 82071, USA
| | - John Ackerman
- Department of Chemical Engineering, University of Wyoming 1000 E. University Ave., Laramie, WY, 82071, USA
| | - Vladimir Alvarado
- Department of Chemical Engineering, University of Wyoming 1000 E. University Ave., Laramie, WY, 82071, USA
| | - William D Rice
- Department of Physics and Astronomy, University of Wyoming 1000 E. University Ave., Laramie, WY, 82071, USA
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Mohammadian B, Annavarapu RK, Raiyan A, Nemani SK, Kim S, Wang M, Sojoudi H. Delayed Frost Growth on Nanoporous Microstructured Surfaces Utilizing Jumping and Sweeping Condensates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:6635-6650. [PMID: 32418428 DOI: 10.1021/acs.langmuir.0c00413] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Self-propelled jumping of condensate droplets (dew) enables their easy and efficient removal from surfaces and is essential for enhancing the condensation heat transfer coefficient and for delaying the frost growth rate on supercooled surfaces. Here, we report the droplet-jumping phenomenon using nanoporous vertically aligned carbon nanotube (VA-CNT) microstructures grown on smooth silicon substrates and coated with poly-(1H, 1H, 2H, 2H-perfluorodecylacrylate) (pPFDA). We also report droplet-sweeping phenomenon on horizontally mounted surfaces, concluding that the frost surface coverage area and the frost growth rates observed with the droplet-sweeping phenomenon are much lower than those that are observed with the droplet-jumping phenomenon alone. We also investigate the fundamentals of droplet-jumping and the frost growth phenomena using line-shaped, hollow-cylindrical, and cylindrical microstructures, comparing the frost surface coverage area and the ice-bridging times during condensation-frosting, prolonged condensation-frosting, and direct-frosting. We find that the closely spaced thin line-shaped microstructures and hollow-cylindrical microstructures are optimal for frost coverage reduction because of their ability to exhibit droplet-jumping and droplet-sweeping phenomena. We observe that adding nonuniform roughness on top of the microstructures leads to jumping-associated droplet-sweeping on supercooled surfaces. Here, we report the evaporation of an already frozen droplet because of freezing of a supercooled condensate droplet in its close vicinity, enabling the Cassie-Baxter state frost growth and enhancing defrosting efficiency. Finally, we discuss the dynamic defrosting behavior of the pPFDA-coated VA-CNT microstructures, concluding that the small gaps (spacings) between the microstructures not only enable dewetting transitions of droplets but also promote the Cassie-Baxter state frost formation.
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Affiliation(s)
- Behrouz Mohammadian
- Department of Mechanical Industrial and Manufacturing Engineering (MIME), The University of Toledo, 4006 Nitschke Hall, Toledo, Ohio 43606, United States
| | - Rama Kishore Annavarapu
- Department of Mechanical Industrial and Manufacturing Engineering (MIME), The University of Toledo, 4006 Nitschke Hall, Toledo, Ohio 43606, United States
| | - Asif Raiyan
- Department of Mechanical Industrial and Manufacturing Engineering (MIME), The University of Toledo, 4006 Nitschke Hall, Toledo, Ohio 43606, United States
| | - Srinivasa Kartik Nemani
- Department of Mechanical Industrial and Manufacturing Engineering (MIME), The University of Toledo, 4006 Nitschke Hall, Toledo, Ohio 43606, United States
| | - Sanha Kim
- Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Minghui Wang
- Department of Chemical Engineering, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Hossein Sojoudi
- Department of Mechanical Industrial and Manufacturing Engineering (MIME), The University of Toledo, 4006 Nitschke Hall, Toledo, Ohio 43606, United States
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Khanmohammadi Chenab K. Anti-Icing Properties of Vertically Aligned TiO 2 Nanopillars. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:6041-6050. [PMID: 32357001 DOI: 10.1021/acs.langmuir.0c00093] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Inspired by the superhydrophobic and anti-icing properties of Berberis thunbergii leaves for the first time, a surface with vertically aligned TiO2 nanopillars (VATiO2NPIs) has been developed, which shows excellent anti-icing properties even at -25 °C. The height and diameter of TiO2NPIs arrays were 200 and 70 nm, respectively, and were fabricated using TiO2 atomic-layer deposition in an aqueous solution on an anodized aluminum oxide substrate and modified with stearic acid. The water contact angle measurements for VATiO2NPI-based aluminum surfaces indicated high contact angle (170.2°), low contact angle hysteresis (5°), excellent delay time (385 s), appropriate robustness (>20 cycles of freeze-melt), and low adhesion strength (<95 kPa). The VATiO2NPI surface analyses were done using energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction spectroscopy (XRD), and Fourier transform infrared spectroscopy (FT-IR) methods, and they showed that the stearic acid stably absorbed on VATiO2NPIs. Our results indicated that the long delay time of the heterogeneous nucleation and freezing process could be obtained by the desired structural match between the VATiO2NPI apices and water molecules in the initiation of the heterogeneous nucleation. In this study, smooth apices of the VATiO2NPIs with highly potent morphology presented significant anti-icing properties because of the strong phonon scattering between nanopillars that can interrupt the heat transfer process. Such results are not achievable by conventional anti-icing methods and give new insight into the mechanism of the anti-icing process.
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Affiliation(s)
- Karim Khanmohammadi Chenab
- Independent Researcher, No. 6, Besat 20 Alley, Shahid Moradkhah Avenue, Ahar 5451837688, East Azerbaijan, Iran
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Höhne S, Hoch C, Böhm C, Winkler R, Bittrich E, Uhlmann P. A New Measuring System for the Determination of the Ice Adhesion Strength on Smooth Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4465-4476. [PMID: 32240588 DOI: 10.1021/acs.langmuir.9b03791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
To gain knowledge about cause-effect relationships for the adhesion of ice on surfaces with different chemical groups, we wanted to study the effect of thin polymer layers on the ice adhesion strength. To minimize the effect of roughness, smooth substrates that have generally relatively low ice adhesion strengths were chosen. To be able to obtain highly reproducible values for the region of low ice adhesion and to measure small differences of ice adhesion at surfaces with different chemical compositions, a new measuring system for the determination of the ice adhesion strength which is based on a modified spin-coater was developed. We show its technical potential on the basis of first results on pure silicon wafers and selected hydrophilic polymer layers. Furthermore, we investigated the effect of the water quality on the ice adhesion strength. The obtained data are discussed in the context of physicochemical properties of the layers and of the chemical characteristics of the used polymers.
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Affiliation(s)
- Susanne Höhne
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany
| | - Claudia Hoch
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany
| | - Carolin Böhm
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany
| | - René Winkler
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany
| | - Eva Bittrich
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany
| | - Petra Uhlmann
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany
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Coady MJ, Getangama NNK, Khalili A, Wood M, Nielsen KE, Bruyn JR, Hutter JL, Klassen RJ, Kietzig A, Ragogna PJ. Highly cross‐linked UV‐cured siloxane copolymer networks as icephobic coatings. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Matthew J. Coady
- Department of ChemistryThe University of Western Ontario London Ontario Canada
| | | | - Aria Khalili
- Department of Mechanical & Materials EngineeringWestern University London Ontario Canada
| | - Michael Wood
- Department of Chemical EngineeringMcGill University Montréal Québec Canada
| | - Kent E. Nielsen
- Product Innovation Lab3M Canada Company London Ontario Canada
| | - John R. Bruyn
- Department of PhysicsThe University of Western Ontario London Ontario Canada
| | - Jeffrey L. Hutter
- Department of PhysicsThe University of Western Ontario London Ontario Canada
| | - Robert J. Klassen
- Department of Mechanical & Materials EngineeringWestern University London Ontario Canada
| | - Anne‐Marie Kietzig
- Department of Chemical EngineeringMcGill University Montréal Québec Canada
| | - Paul J. Ragogna
- Department of ChemistryThe University of Western Ontario London Ontario Canada
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Abstract
Numerous studies have focused on designing functional surfaces that delay frost formation or reduce ice adhesion. However, solutions to the scientific challenges of developing antiicing surfaces remain elusive because of degradation such as mechanical wearing. Inspired by the discontinuous frost pattern on natural leaves, here we report findings on the condensation frosting process on surfaces with serrated structures on the millimeter scale, which is distinct from that on a conventional planar surface with microscale/nanoscale textures. Dropwise condensation, during the first stage of frosting, is enhanced on the peaks and suppressed in the valleys, causing frost to initiate from the peaks, regardless of surface chemistry. The condensed droplets in the valley are then evaporated due to the lower vapor pressure of ice compared with water, resulting in a frost-free zone in the valley, which resists frost propagation even on superhydrophilic surfaces. The dependence of the frost-free areal fraction on the geometric parameters and the ambient conditions is elucidated by both numerical simulations based on steady-state diffusion and an analytical method with an understanding of boundary conditions independent of surface chemistry. We envision that this study would provide a unified framework to design surfaces that can spatially control frost formation, crystal growth, diffusion-controlled growth of biominerals, and material deposition over a broad range of applications.
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46
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Hou W, Shen Y, Tao J, Xu Y, Jiang J, Chen H, Jia Z. Anti-icing performance of the superhydrophobic surface with micro-cubic array structures fabricated by plasma etching. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124180] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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From Extremely Water-Repellent Coatings to Passive Icing Protection—Principles, Limitations and Innovative Application Aspects. COATINGS 2020. [DOI: 10.3390/coatings10010066] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
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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48
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Jin M, Xing Q, Chen Z. A Review: Natural Superhydrophobic Surfaces and Applications. ACTA ACUST UNITED AC 2020. [DOI: 10.4236/jbnb.2020.112008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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49
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Xiao S, Skallerud BH, Wang F, Zhang Z, He J. Enabling sequential rupture for lowering atomistic ice adhesion. NANOSCALE 2019; 11:16262-16269. [PMID: 31454002 DOI: 10.1039/c9nr00104b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
State-of-the-art passive icephobicity relies mainly on static parameters such as surface energy, coating elastic modulus, crack sizes and so on. Low ice adhesion resulting from the dynamic de-icing process, for instance ice detaching modes from substrates, has not yet been explored. In the current study, atomistic modeling and molecular dynamics simulations were employed to identify ice rupture modes as crucial dynamic factors for surface icephobicity. A fish-scale-like icephobic surface prototype enabling low-adhesion sequential rupture of the atomistic interactions at the ice-solid interface was proposed. The novel surface has an intrinsic extended interface rupture pathway, which can lead to a ∼60% reduction in atomistic ice adhesion compared with concurrent ice rupture. This study sheds light on interface mechanical design for surface icephobicity, and could provide solutions for anti-icing, nanoscale tribology and many others. The concept of implementing interfacial rupture modes proposed in this study can also apply to interface design for tailored adhesion mechanics.
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Affiliation(s)
- Senbo Xiao
- Department of Structural Engineering, The Norwegian University of Science and Technology - NTNU, Trondheim, Norway.
| | - Bjørn Helge Skallerud
- Department of Structural Engineering, The Norwegian University of Science and Technology - NTNU, Trondheim, Norway.
| | - Feng Wang
- Department of Structural Engineering, The Norwegian University of Science and Technology - NTNU, Trondheim, Norway.
| | - Zhiliang Zhang
- Department of Structural Engineering, The Norwegian University of Science and Technology - NTNU, Trondheim, Norway.
| | - Jianying He
- Department of Structural Engineering, The Norwegian University of Science and Technology - NTNU, Trondheim, Norway.
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50
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Wang H, He M, Liu H, Guan Y. One-Step Fabrication of Robust Superhydrophobic Steel Surfaces with Mechanical Durability, Thermal Stability, and Anti-icing Function. ACS APPLIED MATERIALS & INTERFACES 2019; 11:25586-25594. [PMID: 31267735 DOI: 10.1021/acsami.9b06865] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Superhydrophobic metallic materials have drawn broad research interest because of promising applications in various fields. The mechanical stability of superhydrophobic surfaces is currently a major concern limiting their practical applications. Herein, we developed a simple method to fabricate robust superhydrophobic surfaces on stainless steel via direct ultrafast laser microprocessing. Of note is that the fabricated superhydrophobic surfaces can withstand mechanical abrasion against an 800 grit SiC sandpaper for 2.3 m at an applied pressure of 5.5 kPa without losing superhydrophobicity. It is proposed that the robust superhydrophobicity may be attributable to the formation of unique hierarchical micro-/nanostructures and a nonpolar carbon layer on the surface. The hierarchical structures are composed of laser-created micropillars and ablation-induced nanoparticles. The fabricated surfaces exhibit good thermal stability and still show superhydrophobicity after thermal treatment at 100 °C for 120 min, which is related to the inorganic nature of metallic materials. An excellent anti-icing property is achieved on the fabricated surfaces with the water droplets on it retaining the liquid state for over 500 min at -8.5 ± 0.5 °C, which benefits from the obtained superhydrophobicity, based on classic nucleation theory and the heat transfer between the rough solid surface and water droplet. We envision that the presented method provides a facile and effective route to fabricate large-area superhydrophobic surfaces with robust mechanical stability and excellent anti-icing property.
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Affiliation(s)
| | | | | | - Yingchun Guan
- Hefei Innovation Research Institute , Beihang University , Hefei 230013 , P. R. China
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