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Khademsameni H, Jafari R, Allahdini A, Momen G. Regenerative Superhydrophobic Coatings for Enhanced Performance and Durability of High-Voltage Electrical Insulators in Cold Climates. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1622. [PMID: 38612138 PMCID: PMC11012825 DOI: 10.3390/ma17071622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024]
Abstract
Superhydrophobic coatings can be a suitable solution for protecting vulnerable electrical infrastructures in regions with severe meteorological conditions. Regenerative superhydrophobicity, the ability to regain superhydrophobicity after being compromised or degraded, could address the issue of the low durability of these coatings. In this study, we fabricated a superhydrophobic coating comprising hydrophobic aerogel microparticles and polydimethylsiloxane (PDMS)-modified silica nanoparticles within a PDMS matrix containing trifluoropropyl POSS (F-POSS) and XIAMETER PMX-series silicone oil as superhydrophobicity-regenerating agents. The fabricated coating exhibited a static contact angle of 169.5° and a contact angle hysteresis of 6°. This coating was capable of regaining its superhydrophobicity after various pH immersion and plasma deterioration tests. The developed coating demonstrated ice adhesion as low as 71.2 kPa, which remained relatively unchanged even after several icing/de-icing cycles. Furthermore, the coating exhibited a higher flashover voltage than the reference samples and maintained a minimal drop in flashover voltage after consecutive testing cycles. Given this performance, this developed coating can be an ideal choice for enhancing the lifespan of electrical insulators.
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Affiliation(s)
| | - Reza Jafari
- Department of Applied Sciences, University of Quebec in Chicoutimi (UQAC), 555 Boul de l’Université, Chicoutimi, QC G7H 2B1, Canada; (H.K.); (A.A.); (G.M.)
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2
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Mohapatra O, Gopu M, Ashraf R, Easo George J, Patil S, Mukherjee R, Kumar S, Mampallil D. Spheroids formation in large drops suspended in superhydrophobic paper cones. BIOMICROFLUIDICS 2024; 18:024107. [PMID: 38606014 PMCID: PMC11006428 DOI: 10.1063/5.0197807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 03/24/2024] [Indexed: 04/13/2024]
Abstract
The utilization of 3D cell culture for spheroid formation holds significant implications in cancer research, contributing to a fundamental understanding of the disease and aiding drug development. Conventional methods such as the hanging drop technique and other alternatives encounter limitations due to smaller drop volumes, leading to nutrient starvation and restricted culture duration. In this study, we present a straightforward approach to creating superhydrophobic paper cones capable of accommodating large volumes of culture media drops. These paper cones have sterility, autoclavability, and bacterial repellent properties. Leveraging these attributes, we successfully generate large spheroids of ovarian cancer cells and, as a proof of concept, conduct drug screening to assess the impact of carboplatin. Thus, our method enables the preparation of flexible superhydrophobic surfaces for laboratory applications in an expeditious manner, exemplified here through spheroid formation and drug screening demonstrations.
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Affiliation(s)
- Omkar Mohapatra
- Department of Physics, Indian Institute of Science Education and Research Tirupati, Mangalam P.O., 517507 Tirupati, AP, India
| | - Maheshwar Gopu
- Department of Physics, Indian Institute of Science Education and Research Tirupati, Mangalam P.O., 517507 Tirupati, AP, India
| | - Rahail Ashraf
- Department of Biology, Indian Institute of Science Education and Research Tirupati, Mangalam P.O., 517507 Tirupati, AP, India
| | - Jijo Easo George
- Department of Physics, Indian Institute of Science Education and Research Tirupati, Mangalam P.O., 517507 Tirupati, AP, India
| | - Saniya Patil
- Department of Biology, Indian Institute of Science Education and Research Tirupati, Mangalam P.O., 517507 Tirupati, AP, India
| | - Raju Mukherjee
- Department of Biology, Indian Institute of Science Education and Research Tirupati, Mangalam P.O., 517507 Tirupati, AP, India
| | - Sanjay Kumar
- Department of Biology, Indian Institute of Science Education and Research Tirupati, Mangalam P.O., 517507 Tirupati, AP, India
| | - Dileep Mampallil
- Department of Physics, Indian Institute of Science Education and Research Tirupati, Mangalam P.O., 517507 Tirupati, AP, India
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3
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Liu IC, Hu X, Fei B, Lee C, Fan S, Xin JH, Noor N. Fluorine-free nanoparticle coatings on cotton fabric: comparing the UV-protective and hydrophobic capabilities of silica vs. silica-ZnO nanostructures. RSC Adv 2024; 14:4301-4314. [PMID: 38304558 PMCID: PMC10828638 DOI: 10.1039/d3ra08835a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 01/22/2024] [Indexed: 02/03/2024] Open
Abstract
Robust, hydrophobic woven cotton fabrics were obtained through the sol-gel dip coating of two different nanoparticle (NP) architectures; silica and silica-ZnO. Water repellency values as high as 148° and relatively low tilt angles for fibrous fabrics (12°) were observed, without the need for fluorinated components. In all cases, this enhanced functionality was achieved with the broad retention of water vapor permeability characteristics, i.e., less than 10% decrease. NP formation routes indicated direct bonding interactions in both the silica and silica-ZnO structures. The physico-chemical effects of NP-compatibilizer (i.e., polydimethoxysilane (PDMS) and n-octyltriethoxysilane (OTES) at different ratios) coatings on cotton fibres indicate that compatibilizer-NP interactions are predominantly physical. Whenever photoactive ZnO-containing additives were used, there was a minor decrease in hydrophobic character, but order of magnitude increases in UV-protective capability (i.e., UPF > 384); properties which were absent in non-ZnO-containing samples. Such water repellency and UPF capabilities were stable to both laundering and UV-exposure, resisting the commonly encountered UV-induced wettability transitions associated with photoactive ZnO. These results suggest that ZnO-containing silica NP coatings on cotton can confer both excellent and persistent surface hydrophobicity as well as UV-protective capability, with potential uses in wearables and functional textiles applications.
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Affiliation(s)
- Irene ChaoYun Liu
- The Hong Kong Polytechnic University, School of Fashion and Textiles, Materials Synthesis and Processing Lab Hung Hom Kowloon Hong Kong SAR
| | - Xin Hu
- The Hong Kong Polytechnic University, School of Fashion and Textiles, Materials Synthesis and Processing Lab Hung Hom Kowloon Hong Kong SAR
| | - Bin Fei
- The Hong Kong Polytechnic University, School of Fashion and Textiles, Materials Synthesis and Processing Lab Hung Hom Kowloon Hong Kong SAR
| | - Chenghao Lee
- The Hong Kong Polytechnic University, School of Fashion and Textiles, Materials Synthesis and Processing Lab Hung Hom Kowloon Hong Kong SAR
| | - Suju Fan
- The Hong Kong Polytechnic University, School of Fashion and Textiles, Materials Synthesis and Processing Lab Hung Hom Kowloon Hong Kong SAR
| | - John H Xin
- The Hong Kong Polytechnic University, School of Fashion and Textiles, Materials Synthesis and Processing Lab Hung Hom Kowloon Hong Kong SAR
| | - Nuruzzaman Noor
- The Hong Kong Polytechnic University, School of Fashion and Textiles, Materials Synthesis and Processing Lab Hung Hom Kowloon Hong Kong SAR
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Effect of Solvent on Superhydrophobicity Behavior of Tiles Coated with Epoxy/PDMS/SS. Polymers (Basel) 2022; 14:polym14122406. [PMID: 35745983 PMCID: PMC9230667 DOI: 10.3390/polym14122406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/04/2022] [Accepted: 06/08/2022] [Indexed: 12/10/2022] Open
Abstract
Superhydrophobic coatings are widely applied in various applications due to their water-repelling characteristics. However, producing a durable superhydrophobic coating with less harmful low surface materials and solvents remains a challenge. Therefore, the aim of this work is to study the effects of three different solvents in preparing a durable and less toxic superhydrophobic coating containing polydimethylsiloxane (PDMS), silica solution (SS), and epoxy resin (DGEBA). A simple sol-gel method was used to prepare a superhydrophobic coating, and a spray-coating technique was employed to apply the superhydrophobic coating on tile substrates. The coated tile substrates were characterized for water contact angle (WCA) and tilting angle (TA) measurements, Field-Emission Scanning Electron Microscopy (FESEM), Atomic Force Microscopy (AFM), and Fourier Transform Infrared Spectroscopy (FTIR). Among 3 types of solvent (acetone, hexane, and isopropanol), a tile sample coated with isopropanol-added solution acquires the highest water contact angle of 152 ± 2° with a tilting angle of 7 ± 2° and a surface roughness of 21.80 nm after UV curing for 24 h. The peel off test showed very good adherence of the isopropanol-added solution coating on tiles. A mechanism for reactions that occur in the best optimized solvent is proposed.
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Cui Y, Li Y, Huan D, Zeng D, Yang Y, Zhu C, Wang J. Fabrication of silicone modified polyurethane matrix superhydrophobic coating with hydroxy-terminated polydimethylsiloxane modified SiO 2 nanoparticles. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2021.1995416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Yingxue Cui
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Yong Li
- National Key Laboratory of Science and Technology on Helicopter Transmission, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Dajun Huan
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Dan Zeng
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Yifan Yang
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Chunling Zhu
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Jingxin Wang
- College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
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Zhang Y, Zhang Z, Yang J, Yue Y, Zhang H. Fabrication of superhydrophobic surface on stainless steel by two-step chemical etching. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang J, Zhang Y, Ding J, Xu Z, Zhang J, He Q. Preparation strategy and evaluation method of durable superhydrophobic rubber composites. Adv Colloid Interface Sci 2022; 299:102549. [PMID: 34839925 DOI: 10.1016/j.cis.2021.102549] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/06/2021] [Accepted: 10/17/2021] [Indexed: 01/29/2023]
Abstract
Superhydrophobic rubber composites have broad application prospects in national defense, industrial and agricultural production and daily life due to their special surface wettability. However, its poor durability at present seriously limits its practical application. Microstructure and low surface energy substances are the decisive factors to realize superhydrophobic surface. Therefore, three strategies to improve the durability of superhydrophobic surface were put forward, including improving the mechanical strength of microstructure, enhancing the adhesion between coating and substrate, and constructing self-repairing surface. On this basis, the preparation techniques of durable superhydrophobic rubber composites were summarized, and then the evaluation methods of durability of superhydrophobic rubber composites were introduced in detail from mechanical durability and chemical durability.
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Wan Ikhsan SN, Yusof N, Aziz F, Ismail AF, Jaafar J, Wan Salleh WN, Misdan N. Superwetting materials for hydrophilic-oleophobic membrane in oily wastewater treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 290:112565. [PMID: 33873023 DOI: 10.1016/j.jenvman.2021.112565] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/05/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
The vast amount of oily wastewater released to the environment through industrialization has worsened the water quality in recent years, posing adverse impacts on general human health. Oil emulsified in water is one of the most difficult mixtures to be treated, making it imperative for new technology to be explored to address this issue. The use of conventional water treatment such as flotation, coagulation, precipitation, adsorption, and chemical treatment have low separation efficiencies and high energy costs, and are not applicable to the separation of oil/water emulsions. Therefore, there is a demand for more efficient methods and materials for the separations of immiscible oil/water mixtures and emulsions. Superwetting materials that can repel oil, while letting water pass through have been widely explored to fit into this concern. These materials usually make use of simultaneous hydrophilic/oleophobic mechanisms to allow a solid surface to separate oily emulsion with little to no use of energy. Also, by integrating specific wettability concepts with appropriate pore scale, solid surfaces may achieve separation of multifarious oil/water mixtures namely immiscible oil/water blends and consolidated emulsions. In this review, materials used to impart superwetting in solid surfaces by focusing on superhydrophilic/superoleophobic wetting properties of the materials categorized into fluorinated and non-fluorinated surface modification are summarized. In each material, its background, mechanism, fabricating processes, and their effects on solid surface's wetting capability are elaborated in detail. The materials reviewed in this paper are mainly organic and green, suggesting the alternative material to replace the fluorine group that is widely used to achieve oleophobicity in oily wastewater treatment.
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Affiliation(s)
- Syarifah Nazirah Wan Ikhsan
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Norhaniza Yusof
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia.
| | - Farhana Aziz
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Juhana Jaafar
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Wan Norharyati Wan Salleh
- Advanced Membrane Technology Research Centre (AMTEC), N29A, Universiti Teknologi Malaysia, 81310, Malaysia; School of Chemical and Energy Engineering (SCEE), Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Malaysia
| | - Nurasyikin Misdan
- Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Hab Pendidikan Tinggi Pagoh, Km 1, Jalan Panchor, Muar, Johor, 84600, Malaysia
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9
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Starostin A, Strelnikov V, Valtsifer V, Lebedeva I, Legchenkova I, Bormashenko E. Robust icephobic coating based on the spiky fluorinated Al 2O 3 particles. Sci Rep 2021; 11:5394. [PMID: 33686094 PMCID: PMC7940413 DOI: 10.1038/s41598-021-84283-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/10/2021] [Indexed: 11/21/2022] Open
Abstract
Omniphobic and icephobic twin-scale surfaces based on the “urchin”-like fluorinated Al2O3 particles are presented. Combined effect of hierarchical topography and fluorination supplied to the surfaces omniphobic and icephobic properties. The study of the stability of the Cassie wetting state is reported. High apparent contact angles were accompanied with the low contact angle hysteresis and high stability of the Cassie air trapping wetting state. Time delay of the ice crystallization as high as \documentclass[12pt]{minimal}
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\begin{document}$$88\pm 5$$\end{document}88±5 min was established when compared to the ice formation on flat aluminum and non-fluorinated “urchin”-like surfaces. Crystallized water droplets formed on the reported nano-structured surfaces were easily blown out by the air jet with the velocity of \documentclass[12pt]{minimal}
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\begin{document}$$v=3.0\pm 1.0$$\end{document}v=3.0±1.0 m/s, (which is markedly lower than that common for exploitation of aircrafts and turbines). Heated “urchin”-like surfaces completely restored their omniphobic and icephobic surfaces after thawing. Qualitative analysis of water freezing is supplied.
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Affiliation(s)
- Anton Starostin
- Institute of Technical Chemistry, UB RAS, Academician Korolev St., 3, Perm, 614013, Russian Federation
| | - Vladimir Strelnikov
- Institute of Technical Chemistry, UB RAS, Academician Korolev St., 3, Perm, 614013, Russian Federation
| | - Viktor Valtsifer
- Institute of Technical Chemistry, UB RAS, Academician Korolev St., 3, Perm, 614013, Russian Federation
| | - Irina Lebedeva
- Institute of Technical Chemistry, UB RAS, Academician Korolev St., 3, Perm, 614013, Russian Federation
| | - Irina Legchenkova
- Engineering Faculty, Chemical Engineering Department, Ariel University, POB 3, 407000, Ariel, Israel
| | - Edward Bormashenko
- Engineering Faculty, Chemical Engineering Department, Ariel University, POB 3, 407000, Ariel, Israel.
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Zhang SJ, Cao DL, Xu LK, Tang JK, Meng RQ, Li HD. Corrosion resistance of a superhydrophobic dodecyltrimethoxysilane coating on magnesium alloy AZ31 fabricated by one-step electrodeposition. NEW J CHEM 2021. [DOI: 10.1039/d1nj00998b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A superhydrophobic and corrosion-resistant coating with a hierarchical macro/nanostructure was constructed by one-step electrodeposition of dodecyltrimethoxysilane (e-DTMS) on Mg alloy AZ31.
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Affiliation(s)
- Sheng-Jian Zhang
- School of Chemical Engineering and Technology
- North University of China
- Taiyuan 030051
- P. R. China
- State Key Laboratory for Marine Corrosion and Protection
| | - Duan-Lin Cao
- School of Chemical Engineering and Technology
- North University of China
- Taiyuan 030051
- P. R. China
| | - Li-Kun Xu
- State Key Laboratory for Marine Corrosion and Protection
- Luoyang Ship Material Research Institute
- Qingdao 266235
- P. R. China
| | - Jian-Ke Tang
- School of Chemical Engineering and Technology
- North University of China
- Taiyuan 030051
- P. R. China
- Department of Chemistry and Chemical Engineering
| | - Rong-Qian Meng
- School of Chemical Engineering and Technology
- North University of China
- Taiyuan 030051
- P. R. China
- Department of Chemistry and Chemical Engineering
| | - Hong-Dao Li
- Department of Chemistry and Chemical Engineering
- Taiyuan Institute of Technology
- Taiyuan 030008
- P. R. China
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11
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Zulfiqar U, Thomas AG, Matthews A, Lewis DJ. Surface Engineering of Ceramic Nanomaterials for Separation of Oil/Water Mixtures. Front Chem 2020; 8:578. [PMID: 33330349 PMCID: PMC7711160 DOI: 10.3389/fchem.2020.00578] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/04/2020] [Indexed: 11/13/2022] Open
Abstract
Oil/water mixtures are a potentially major source of environmental pollution if efficient separation technology is not employed during processing. A large volume of oil/water mixtures is produced via many manufacturing operations in food, petrochemical, mining, and metal industries and can be exposed to water sources on a regular basis. To date, several techniques are used in practice to deal with industrial oil/water mixtures and oil spills such as in situ burning of oil, bioremediation, and solidifiers, which change the physical shape of oil as a result of chemical interaction. Physical separation of oil/water mixtures is in industrial practice; however, the existing technologies to do so often require either dissipation of large amounts of energy (such as in cyclones and hydrocyclones) or large residence times or inventories of fluids (such as in decanters). Recently, materials with selective wettability have gained attention for application in separation of oil/water mixtures and surfactant stabilized emulsions. For example, a superhydrophobic material is selectively wettable toward oil while having a poor affinity for the aqueous phase; therefore, a superhydrophobic porous material can easily adsorb the oil while completely rejecting the water from an oil/water mixture, thus physically separating the two components. The ease of separation, low cost, and low-energy requirements are some of the other advantages offered by these materials over existing practices of oil/water separation. The present review aims to focus on the surface engineering aspects to achieve selectively wettability in materials and its their relationship with the separation of oil/water mixtures with particular focus on emulsions, on factors contributing to their stability, and on how wettability can be helpful in their separation. Finally, the challenges in application of superwettable materials will be highlighted, and potential solutions to improve the application of these materials will be put forward.
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Affiliation(s)
- Usama Zulfiqar
- Department of Materials, University of Manchester, Manchester, United Kingdom.,International Centre for Advanced Materials (ICAM), University of Manchester, Manchester, United Kingdom
| | - Andrew G Thomas
- Department of Materials, University of Manchester, Manchester, United Kingdom.,International Centre for Advanced Materials (ICAM), University of Manchester, Manchester, United Kingdom
| | - Allan Matthews
- Department of Materials, University of Manchester, Manchester, United Kingdom.,International Centre for Advanced Materials (ICAM), University of Manchester, Manchester, United Kingdom
| | - David J Lewis
- Department of Materials, University of Manchester, Manchester, United Kingdom.,International Centre for Advanced Materials (ICAM), University of Manchester, Manchester, United Kingdom
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12
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M KR, Misra S, Mitra SK. Friction and Adhesion of Microparticle Suspensions on Repellent Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13689-13697. [PMID: 33156636 DOI: 10.1021/acs.langmuir.0c02651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
With the recent advancements in the development and application of repellent surfaces, both in air and under liquid medium, accurate characterization of repellence behavior is critical in understanding the mechanism behind many observed phenomena and to exploit them for novel applications. Conventionally, the repellence behavior of a surface is characterized by the optical measurement of the dynamic contact angle of the target (to be repelled) liquid on the test surface. However, as already established in the literature, optical measurements are prone to appreciable error, especially for repellent surfaces with high contact angles. Here, we present an alternative, more accurate force-based characterization method of both friction and adhesion forces of microparticle-laden aqueous droplets over various repellent surfaces, where the force signature is captured by probing the surface with a droplet of the test liquid mounted at the tip of a flexible cantilever and then tracking the deflection of the tip of the cantilever as the probe droplet interacts with the surface. A systematic investigation of the response of repellent surfaces toward droplets with different microparticle concentrations reveals the dependency and sensitivity of measured adhesion and friction signature toward particle concentration. A comparison with the theoretical estimate from optical goniometry highlights the deviation of the theoretical data from experimentally measured values and further substantiates the need for such a force-based approach for accurate characterization of repellence behavior.
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Affiliation(s)
- Kiran Raj M
- Micro & Nano-Scale Transport Laboratory, Waterloo Institute for Nanotechnology, Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Sirshendu Misra
- Micro & Nano-Scale Transport Laboratory, Waterloo Institute for Nanotechnology, Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Sushanta K Mitra
- Micro & Nano-Scale Transport Laboratory, Waterloo Institute for Nanotechnology, Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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13
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Sutar RS, Latthe SS, Sargar AM, Patil CE, Jadhav VS, Patil AN, Kokate KK, Bhosale AK, Sadasivuni KK, Mohite SV, Liu S, Xing R. Spray Deposition of PDMS/Candle Soot NPs Composite for Self‐Cleaning Superhydrophobic Coating. ACTA ACUST UNITED AC 2020. [DOI: 10.1002/masy.202000031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Rajaram S. Sutar
- Self‐cleaning Research Laboratory, Department of Physics, Raje Ramrao College Affiliated to Shivaji University, Kolhapur Jath Maharashtra India
| | - Sanjay S. Latthe
- Henan Key Laboratory of Polyoxometalate Chemistry, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering Henan University Kaifeng P. R. China
- Self‐cleaning Research Laboratory, Department of Physics, Raje Ramrao College Affiliated to Shivaji University, Kolhapur Jath Maharashtra India
| | - A. M. Sargar
- Department of Chemistry Bharti Vidyapeeth's Dr. Patangrao Kadam Mahavidyalaya Sangli Maharashtra India
| | - C. E. Patil
- Department of Physics Bharti Vidyapeeth's Dr. Patangrao Kadam Mahavidyalaya Sangli Maharashtra India
| | - V. S. Jadhav
- Department of Zoology Raje Ramrao College Jath Maharashtra India
| | - A. N. Patil
- Smt. A. R. Patil Kanya Mahavidyalaya, Ichalkaranji Kolhapur Maharashtra India
| | - K. K. Kokate
- School of Chemistry MIT World Peace University. Kothrud Pune Maharashtra India
| | - Appasaheb K. Bhosale
- Self‐cleaning Research Laboratory, Department of Physics, Raje Ramrao College Affiliated to Shivaji University, Kolhapur Jath Maharashtra India
| | | | - Santosh V. Mohite
- Henan Key Laboratory of Polyoxometalate Chemistry, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering Henan University Kaifeng P. R. China
| | - Shanhu Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering Henan University Kaifeng P. R. China
| | - Ruimin Xing
- Henan Key Laboratory of Polyoxometalate Chemistry, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering Henan University Kaifeng P. R. China
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14
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Sutar RS, Latthe SS, Nagappan S, Ha C, Sadasivuni KK, Liu S, Xing R, Bhosale AK. Fabrication of robust self‐cleaning superhydrophobic coating by deposition of polymer layer on candle soot surface. J Appl Polym Sci 2020. [DOI: 10.1002/app.49943] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rajaram S. Sutar
- Self‐cleaning Research Laboratory, Department of Physics Raje Ramrao College (Affiliated to Shivaji University, Kolhapur) Maharshtra India
| | - Sanjay S. Latthe
- Self‐cleaning Research Laboratory, Department of Physics Raje Ramrao College (Affiliated to Shivaji University, Kolhapur) Maharshtra India
| | - Saravanan Nagappan
- Department of Polymer Science and Engineering Pusan National University Busan Republic of Korea
| | - Chang‐Sik Ha
- Department of Polymer Science and Engineering Pusan National University Busan Republic of Korea
| | | | - Shanhu Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering Henan University Kaifeng China
| | - Ruimin Xing
- Henan Key Laboratory of Polyoxometalate Chemistry, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering Henan University Kaifeng China
| | - Appasaheb K. Bhosale
- Self‐cleaning Research Laboratory, Department of Physics Raje Ramrao College (Affiliated to Shivaji University, Kolhapur) Maharshtra India
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15
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Ma J, Wang B, Gong Z, Yang X, Wang Y. Morphology-controllable synthesis and application of TiO2 nanotube arrays with “photocatalysis and self-cleaning” synergism. NEW J CHEM 2020. [DOI: 10.1039/d0nj00743a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The integration of photocatalytic materials and self-cleaning superhydrophobic materials provides a possibility of combining decontamination and antifouling.
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Affiliation(s)
- Jun Ma
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Material Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Boyou Wang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Material Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Zhe Gong
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Material Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
| | - Xiande Yang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics
- Nanning Normal University
- Nanning 530001
- P. R. China
| | - Yongqian Wang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Material Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- P. R. China
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16
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Huang Z, Gurney RS, Wang T, Liu D. Environmentally durable superhydrophobic surfaces with robust photocatalytic self-cleaning and self-healing properties prepared via versatile film deposition methods. J Colloid Interface Sci 2018; 527:107-116. [PMID: 29787946 DOI: 10.1016/j.jcis.2018.05.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/28/2018] [Accepted: 05/03/2018] [Indexed: 10/17/2022]
Abstract
Superhydrophobic (SH) surfaces with self-cleaning photocatalytic properties have become an important research focus in recent years. In this work, we fabricated multifunctional and environmentally durable SH surfaces via a facile one-step reaction of octadecyl isocyanate (ODI) with TiO2 particles. The resulting films possess SH properties, facilitated by a combination of hydrophobic long alkyl chains and the hierarchical crystalline structure. Films can be prepared via spray or blade coating on a variety of hard and soft substrates, and function well when exposed to either air or oil. The coating retains its SH properties for at least 6 months in ambient conditions, and after organic pollution it can recover its SH properties using UV or sun light illumination. After water impalement, the SH properties can self-heal via the self-assembly of long alkyl chains to their original state within several hours at ambient conditions, or within minutes on a heating stage. The covalent bonds between alkyl chains and TiO2, together with hydrogen bonds between adjacent alkyl chains, greatly increased the surface durability of the SH films. This multifunctional SH coating is a very promising material for commercial and industrial coating applications.
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Affiliation(s)
- Zhiwei Huang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Robert S Gurney
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Tao Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Dan Liu
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China.
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17
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Davis A, Surdo S, Caputo G, Bayer IS, Athanassiou A. Environmentally Benign Production of Stretchable and Robust Superhydrophobic Silicone Monoliths. ACS APPLIED MATERIALS & INTERFACES 2018; 10:2907-2917. [PMID: 29286629 DOI: 10.1021/acsami.7b15088] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Superhydrophobic materials hold an enormous potential in sectors as important as aerospace, food industries, or biomedicine. Despite this great promise, the lack of environmentally friendly production methods and limited robustness remain the two most pertinent barriers to the scalability, large-area production, and widespread use of superhydrophobic materials. In this work, highly robust superhydrophobic silicone monoliths are produced through a scalable and environmentally friendly emulsion technique. It is first found that stable and surfactantless water-in-polydimethylsiloxane (PDMS) emulsions can be formed through mechanical mixing. Increasing the internal phase fraction of the precursor emulsion is found to increase porosity and microtexture of the final monoliths, rendering them superhydrophobic. Silica nanoparticles can also be dispersed in the aqueous internal phase to create micro/nanotextured monoliths, giving further improvements in superhydrophobicity. Due to the elastomeric nature of PDMS, superhydrophobicity can be maintained even while the material is mechanically strained or compressed. In addition, because of their self-similarity, the monoliths show outstanding robustness to knife-scratch, tape-peel, and finger-wipe tests, as well as rigorous sandpaper abrasion. Superhydrophobicity was also unchanged when exposed to adverse environmental conditions including corrosive solutions, UV light, extreme temperatures, and high-energy droplet impact. Finally, important properties for eventual adoption in real-world applications including self-cleaning, stain-repellence, and blood-repellence are demonstrated.
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Affiliation(s)
- Alexander Davis
- Smart Materials, Istituto Italiano di Tecnologia , Genoa 16163, Italy
| | - Salvatore Surdo
- Nanophysics Department, Istituto Italiano di Tecnologia , Genoa 16163, Italy
| | - Gianvito Caputo
- Smart Materials, Istituto Italiano di Tecnologia , Genoa 16163, Italy
| | - Ilker S Bayer
- Smart Materials, Istituto Italiano di Tecnologia , Genoa 16163, Italy
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18
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Zhang P, Maeda Y, Lv F, Takata Y, Orejon D. Enhanced Coalescence-Induced Droplet-Jumping on Nanostructured Superhydrophobic Surfaces in the Absence of Microstructures. ACS APPLIED MATERIALS & INTERFACES 2017; 9:35391-35403. [PMID: 28925681 DOI: 10.1021/acsami.7b09681] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Superhydrophobic surfaces are receiving increasing attention due to the enhanced condensation heat transfer, self-cleaning, and anti-icing properties by easing droplet self-removal. Despite the extensive research carried out on this topic, the presence or absence of microstructures on droplet adhesion during condensation has not been fully addressed yet. In this work we, therefore, study the condensation behavior on engineered superhydrophobic copper oxide surfaces with different structural finishes. More specifically, we investigate the coalescence-induced droplet-jumping performance on superhydrophobic surfaces with structures varying from the micro- to the nanoscale. The different structural roughness is possible due to the specific etching parameters adopted during the facile low-cost dual-scale fabrication process. A custom-built optical microscopy setup inside a temperature and relative humidity controlled environmental chamber was used for the experimental observations. By varying the structural roughness, from the micro- to the nanoscale, important differences on the number of droplets involved in the jumps, on the frequency of the jumps, and on the size distribution of the jumping droplets were found. In the absence of microstructures, we report an enhancement of the droplet-jumping performance of small droplets with sizes in the same order of magnitude as the microstructures. Microstructures induce further droplet adhesion, act as a structural barrier for the coalescence between droplets growing on the same microstructure, and cause the droplet angular deviation from the main surface normal. As a consequence, upon coalescence, there is a decrease in the net momentum in the out-of-plane direction, and the jump does not ensue. We demonstrate that the absence of microstructures has therefore a positive impact on the coalescence-induced droplet-jumping of micrometer droplets for antifogging, anti-icing, and condensation heat transfer applications.
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Affiliation(s)
- Peng Zhang
- Institute of Refrigeration and Cryogenics, MOE Key Laboratory for Power Machinery and Engineering, Shanghai Jiao Tong University , Shanghai 200240, China
| | - Yota Maeda
- Department of Mechanical Engineering, Thermofluid Physics Laboratory, Kyushu University , 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Fengyong Lv
- Institute of Refrigeration and Cryogenics, MOE Key Laboratory for Power Machinery and Engineering, Shanghai Jiao Tong University , Shanghai 200240, China
| | - Yasuyuki Takata
- Department of Mechanical Engineering, Thermofluid Physics Laboratory, Kyushu University , 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Daniel Orejon
- Department of Mechanical Engineering, Thermofluid Physics Laboratory, Kyushu University , 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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19
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Song F, Wu C, Chen H, Liu Q, Liu J, Chen R, Li R, Wang J. Water-repellent and corrosion-resistance properties of superhydrophobic and lubricant-infused super slippery surfaces. RSC Adv 2017. [DOI: 10.1039/c7ra04816e] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Inspired by lotus leaves and pitcher plants, superhydrophobic surfaces and super slippery surfaces have been fabricated to improve the characteristics of AZ31 magnesium alloy surfaces.
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Affiliation(s)
- Fan Song
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
- Institute of Advanced Marine Materials
| | - Cuiqing Wu
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
- Institute of Advanced Marine Materials
| | - Hailong Chen
- College of Shipbuilding Engineering
- Harbin Engineering University
- Harbin 150001
- P. R. China
| | - Qi Liu
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
- Key Laboratory of Superlight Material and Surface Technology
| | - Jingyuan Liu
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
- Key Laboratory of Superlight Material and Surface Technology
| | - Rongrong Chen
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
| | - Rumin Li
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
- Institute of Advanced Marine Materials
| | - Jun Wang
- College of Material Science and Chemical Engineering
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
- Institute of Advanced Marine Materials
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20
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Wu C, Liu Q, Liu J, Chen R, Takahashi K, Liu L, Li R, Liu P, Wang J. Hierarchical flower like double-layer superhydrophobic films fabricated on AZ31 for corrosion protection and self-cleaning. NEW J CHEM 2017. [DOI: 10.1039/c7nj02684f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The designed sample is prepared by self-assembly of octadecyltrichlorosilane and deposition of ferric stearate, and the contact angle is 160°.
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Affiliation(s)
- Cuiqing Wu
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
| | - Qi Liu
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
| | - Jingyuan Liu
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
| | - Rongrong Chen
- Institute of Advanced Marine Materials
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
| | - Kazunobu Takahashi
- Institute of Advanced Marine Materials
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
| | - Lianhe Liu
- Institute of Advanced Marine Materials
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
| | - Rumin Li
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
| | - Peili Liu
- Institute of Advanced Marine Materials
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
| | - Jun Wang
- Key Laboratory of Superlight Material and Surface Technology
- Ministry of Education
- Harbin Engineering University
- Harbin 150001
- People's Republic of China
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