Spraying Strategy Research Articles

Ultra-high Prussian blue loading in SPEEK matrix fabricated by one-step electrostatic spraying as proton exchange membranes for fuel cell

Mixed matrix proton exchange membrane is promising for fuel cell application, but maximizing nanofiller loading to enhance performance is significant challenge. This study developed a one-step electrostatic spraying strategy to prepare ultra-high Prussian blue loading (up to 66.7 wt%) in sulfonated poly(ether ether ketone) matrix (PB@SPEEK). By coupling the electrostatic spraying and in situ solvent evaporation densification, SPEEK fills the voids between PB nanoparticles, forming a bicontinuous microstructure in the membrane. The ultra-high PB content of 66.7 wt% enable a fully utilization of its intrinsic properties, resulting in extremely low swelling ratio of 3.4% at 80°C, excellent flexibility of freely folding, and nearly 100% mass retention after 12-hour immersion in Fenton reagent at 60°C. In single-cell tests, the PB@SPEEK mixed matrix membrane shows stable internal resistance due to easily water hydration, therefore achieving excellent low-temperature peak power (1973.9 mW/cm2 at 40 °C and 2078.0 mW/cm2 at 60°C). The strategy developed in this study enables the one-step preparation of large-area, ultra-thin and ultra-high capacity of inorganic nanofiller mixed matrix proton exchange membranes for high-performance fuel cell.

Facile and effective construction of superhydrophobic, multi-functional and durable coatings on steel structure

Nowadays, steel is one of the most significant materials in industry and daily life. Unfortunately, the defects of steel structures such as collapse at high temperature, poor corrosion resistance, and bad surface functionality have severely restricted their further application. Applying functional coatings for steel structures is considered the effective strategy for settling theses disadvantages. Inspired by nature, eco-friendly, superhydrophobic, and multifunctional-integrated coatings were fabricated on steel via one-step spraying strategy in this paper. Along with silicon dioxide (SiO2) nanoparticles and epoxy resin/silicone resin (EP/SR), the coatings are jointly constituted by hydrophobic flame retardants (M-ALHP@ZIF-8) prepared via multi-stage modification. Due to the formation of micro/nano-scaled rough structure with low surface energy, the water contact angle (WCA) and water sliding angle (WSA) of as-prepared coatings can reach 162.4° ± 1.2° and 2.8° ± 0.4°. The water repellency with low water adhesion can endow the surface of steel with excellent self-cleaning, anti-fouling, and long-lasting anti-corrosion ability. Additionally, the superhydrophobic coatings have displayed good mechanical robustness, chemical stability and weather resistance, which can exhibit certain actual values. Accorded with Zn-catalyzed charring effect of flame retardants, as-prepared coatings have possessed outstanding fire protection capacity with the lowest backside temperature of 181 °C after 1 h fire impact tests. Consequently, this work has provided a facile and effective route for synchronously tackling the key challenges of poor fire protection and surface functionality for steel structures, which will be expected to pave the wide pathway for constructing multifunctional coatings in more fields.

Facile and fast construction of biomimetic, waterborne, and superhydrophobic coatings via spraying strategy

Typically, the preparation of superhydrophobic coatings may release a large amount of volatile organic compounds (VOCs), which will be potentially harmful to the environment. In this condition, waterborne coatings have gradually become the main method to replace the traditional organic solvent-based coatings in recent years. Inspired by natural superhydrophobic phenomena, biomimetic, waterborne, and superhydrophobic coatings with multi-functional integration have been prepared via a one-step pneumatic spraying technique in this paper. The coatings were mainly composed of solvent (water), low surface energy substances (polytetrafluoroethylene emulsion (PTFE)), binding agents (waterborne silicone resin (WSR)), rough structure maker (polyphenylene sulfide (PPS) and graphene powder (GP)), and filler dispersion agent (dodecyl phenyl polyoxyethylene (OP-10)). Owing to the formation of hierarchical micro/nano-scaled structure covered with low surface energy, the water contact angle (WCA) and water sliding angle (WSA) values of as-prepared coatings can reach 155.5° ± 1.1° and 9.2° ± 0.3°, respectively. This is feasible for endowing the coatings with rich surface functionalities such as self-cleaning properties, anti-icing ability, anti-corrosion properties, and oil-water separation. Furthermore, the adequate durability and stability of as-prepared coatings have been confirmed by a series of mechanical and chemical damage tests. The super-hydrophobicity can be retained even after 12 m sandpaper abrasion, 24 h continuous UV irradiation and acid/alkali immersion tests. Thus, this article has provided an effective and simplified strategy for preparing multifunction-integrated and waterborne superhydrophobic coatings, which will extend its potential application in many daily life and industrial fields.

One-Step Spraying Strategy for Fabricating Bioinspired, Graphene-Based, and Multifunctional-Integrated Coatings on Structural Steel with Good Water Repellency, Fireproofing, Anticorrosion, and Durability.

Traditionally, many coatings were merely concentrated on settling the inherent fire protection problem of steel structures, while surface contamination and corrosion susceptibility should also be considered. Concurrently addressing these problems in fireproof efficiency and surface multifunctionality has become an issue of great significance in further expanding the application value in industrial and daily scenarios. Based on this condition, ecofriendly, graphene-based, and superhydrophobic coatings with multifunctional integration were constructed on steel via a one-step spraying method. The as-prepared coatings mainly consist of epoxy resin (EP), silicone resin (SR), a cyclodextrin-based flame retardant (MCDPM), expandable graphite (EG), and multilayered graphene (MG). The results demonstrate that the water contact angle (WCA) and water sliding angle (WSA) of as-prepared coatings can reach 156.8 ± 1.6 and 5.8 ± 0.7°, respectively, revealing good water repellency and self-cleaning properties. The coatings can also exhibit adequate adaptability for various substrates including wood, polyurethane foam, and cotton fabrics. Besides, good durability and robustness of coatings have been also verified via acid/alkali immersion, outdoor exposure, O2/plasma etching, and linear abrasion tests. Simultaneously, the coatings can exhibit excellent anticorrosion capacity for steel materials via a double barrier effect. Most importantly, the coatings have exhibited the lowest backside temperature (234.5 °C) during fire impact tests, suggesting excellent fireproof and heat insulation performance. This fact can be ascribed to the conjunct action between the physical/chemical charring process of flame retardants and the remarkable thermal stability of graphene. Consequently, this article can be expected to further promote the development and application of multifunctional-integrated coatings for steel structures in more fields.

One-Step Fabrication for CsPbBr3 Perovskite Thin Film via a Facile Ion-Solution Spraying Approach

In the current work, a facile ion-solution spraying strategy was employed for one-step fabrication of CsPbBr3 perovskite thin films under atmosphere. The dependences of sample properties on annealing parameters (toleration temperature and duration time) were investigated in detail. As the results suggested, the sample prepared at 200 °C for 15 min featured better properties than others. The sample displayed a cubic phase with good crystallinity, a dense and compact morphology, a bandgap energy of 2.289 eV, and an average decay lifetime of 55.536 ns. Furthermore, the sample presented a Br-rich state, which was favorable for the carrier behavior and structure stability.

“Change According to the Situation” – Color‐Accommodative Nature‐Skin‐Derived Thermochromic Membrane for Active All‐Season Thermal Management

AbstractEnergy crisis and worsening greenhouse effects cause unprecedented global environmental and economic‐sustainability challenges. The emerging all‐season thermal regulation technology that can provide comfort to humans without consuming external‐energy demonstrates promising prospects. Inspired by the temperature‐accommodative skin of the color‐changing rain‐frog, a biodegradable nature‐skin‐derived thermochromic membrane (PCTM‐H) is nano‐engineered for active all‐season thermal management using the integrative interfacially wet‐casting film‐forming and spraying strategy of nature‐skin to incorporate polyvinyl alcohol and thermochromic microcapsules. Its outstanding thermochromic origins allow it to switch adaptively between cooling and heating modes without additional energy input. PCTM‐H has a light color with high reflectivity in hot summer and a dark‐color that absorbs solar radiation in cold winter, with an overall visible light modulation of ≈53.5%, solar modulation of ≈32.2%, and a remarkable emissivity in mid‐infrared band (≈86.7%). PCTM‐H has exceptional adaptive thermal management capabilities for multitudinous outdoor‐applications. Simulation results show that PCTM‐H has prominent energy‐saving efficiency in cities with different climate zones when utilized as roof‐protection membranes. Additionally, the distinguished mechanical features, weatherability, and bio‐degradability of PCTM‐H substantially increase its potential applications. This study provides a reference for the development of active all‐season thermal management materials and high‐value utilization of nature‐skin, contributing to the goal of carbon‐neutrality.

Anticorrosion composite coating based on silver phosphate/poly-phenylene sulfide with excellent hydrophobicity and antimicrobial properties

Combating microbial contamination has been one of the hottest topics in the scientific community. Therefore, antibacterial materials have been rapidly developed and widely used in recent decades. However, developing corrosion-resistant coatings with both hydrophobic and antimicrobial properties remains challenging. This study innovatively mixed polyphenylene sulfide (PPS) resin with Ag3PO4/SiO2 filler, and prepared a hydrophobic antibacterial coating with enhanced corrosion resistance on the tinplate surface through a simple spraying strategy. After testing, the water contact angle of the composite coating is 139.7° ± 1°, and the sliding angle is less than 5° ± 1°. Compared with the pure PPS coating, the corrosion current of the composite coating was reduced by 4 orders of magnitude, with an impedance of 788740 Ω·cm2. After 200 h testing in a salt spray chamber, it still showed excellent corrosion resistance. Excellent hydrophobicity and anti-corrosion properties effectively reduce the adhesion of water, thereby preventing microorganisms from forming biofilms on the coating surface and corroding the substrate. In addition, bacterial tests show that the coating has excellent antibacterial efficacy, effectively inhibiting the reproduction of E. coli and S. aureus, providing a second line of defense to prevent bacteria from adhering to the substrate. Therefore, the multi-faceted characteristics make PPS composite coatings have broad application prospects.

Ultrasonic spraying of Ce(Mn,Fe)O2 nanocatalysts onto a perovskite surface for highly efficient electrochemical CO2 reduction

We propose an ultrasonic spraying strategy for the one-step fabrication of uniform nano-electrodes with a nano-convex structure on an all-ceramic fuel electrode, enhancing both activity and durability.

Does monitoring pests pay off? a bioeconomic assessment of Drosophila suzukii controls.

Drosophila suzukii is a significant invasive pest that has caused high management costs and economic losses for blueberry growers in the United States. The status quo control strategy commonly used by growers is to apply pesticides proactively and frequently to reduce infestation. Recent studies have shown that the calendar-based spraying strategy might be unsustainable in the long term, making the reduction of pesticide reliance a top priority for the berry industry. Incorporating pest monitoring into the control strategy could be an option to improve efficiency while reducing pesticide usage. This study assesses the economic implications of monitoring-based control strategies compared to calendar-based spraying control strategies for organic blueberry production in Oregon. We combine a D. suzukii population model into the economic simulation framework, evaluate two monitoring methods (adult trapping and fruit sampling), and identify the profit-maximizing control strategy under different scenarios. In the baseline scenario, control strategies that incorporate fruit sampling exhibit the highest average profits. Although the status quo control strategy (spraying every 3 days) generates higher average revenue than monitoring-based strategies, the cost from the higher number of pesticide application offsets the returns. This study uses a novel bioeconomic simulation framework to show that incorporating fruit sampling can be a promising tool to reduce pesticide reliance while controlling D. suzukii infestation. These findings provide clearer information on the economic viability of using monitoring-based pest control strategies in organic berry production, and the assessment framework sheds light on the economics of pest management. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Temperature-dependent dielectric and wide-temperature-range microwave absorption properties of La0.8Sr0.2MnO3/Al2O3–13%TiO2 coatings

The advancement of absorption materials and coating preparation technology is crucial to address the challenges posed by electromagnetic interference and pollution in high-temperature extreme environments. Here, by using a granulation and plasma spraying strategy, we successfully fabricated a series of La0.8Sr0.2MnO3/Al2O3–13%TiO2 (LSMO/AT13) high-temperature microwave absorption coatings that have excellent dielectric properties and extremely thermal stability. The results showed that the LSMO/AT13 coatings exhibited remarkable oxidation resistance, withstanding high-temperature aerobic environments of up to 1000 °C. Based on the temperature-dependent permittivity of the coatings, the establishment process of polarization and the transformation of loss mechanism were observed and explained. With the increase of temperature, the main dielectric loss mechanism of the coatings transitions from polarization loss to conductive loss. Thanks to the coordinated effects of impedance and loss, the coatings are capable of effectively absorbing microwave over a wide temperature range. When the LSMO content was 30 wt% and the thickness was 1.9 mm, the effective bandwidth ranged from 1.7 GHz to 2.4 GHz at temperatures below 773 K. This study demonstrates the promising application of LSMO/AT13 microwave absorption coatings for ultra-high temperature environment, and provides a reference for the design and optimization of high-temperature microwave absorption coatings.

Electrostatic induced self-assembled MXene/EPOSS for high-performance electromagnetic interference shielding materials

It is still a challenge to prepare flexible electromagnetic interference (EMI) shielding materials based on Ti3C2Tx MXene through a facial and scalable method. In this study, epoxied octamethyl-cyclotetrasiloxane (EPOSS) was self-assembled with Ti3C2Tx to construct EMI shielding composites via facial spraying coating. Because the EPOSS decreased the surface free energy of Ti3C2Tx in the acid-base component, the Ti3C2Tx/EPOSS suspension was able to be sprayed on carboxylated polybutadiene (CPB) uniformly. Molecular dynamics (MD) simulations were explored to demonstrate the interaction energy between EPOSS and CPB with different –COOH contents. The prepared EMI shielding composite has high abrasion resistance and good bending durability because EPOSS reinforced the interface interaction between Ti3C2Tx and CPB through covalent bonds. Based on a pre-stretching spray method, the prepared composite has high surface roughness, leading to a high specific EMI shielding effectiveness of 1800 dB cm2 g−1 at a low Ti3C2Tx loading of 8.5 wt%. Additionally, the physically protective effect of Si–O–Si cages in EPOSS provided good flame retardancy. Therefore, the proposed EPOSS-assisted Ti3C2Tx spraying strategy could prepare EMI shielding materials with high effectiveness, excellent abrasion resistance, and good flame retardancy, which has a broad prospect for the application of high-power, portable, and wearable flexible electronic devices.

Colorfully coated cotton fabric for passive daytime radiative cooling

Passive daytime radiative cooling (PDRC), which can cool objects without energy consumption, is a promising strategy for realizing sustainable cooling. However, developing radiative cooling materials with esthetic versatilities is still a great challenge, let alone colorful fabrics with cooling properties. Herein, we fabricate a colored radiative cooling cotton fabric by using a facile and scalable spraying strategy. Randomly distributed silane modified SiO2 serves as the backscattering underlayer exhibiting both high solar reflection and broadband mid-infrared emission. Acrylate polymers used to encapsulate pigments improve the pigment adhesion without sacrificing their spectral properties, and the encapsulated pigments cover on the underlayer as a colored layer to generate specific color. Consequently, the colored coated cotton fabric achieves a relatively high near infrared reflectance of 89 % and an atmospheric window emissivity of 91 %. Cooling effects are achieved by the colored coated cotton fabrics, which yield temperature drop of 5.6 °C comparing with bare cotton fabric and have lower temperatures of 2.5–4.7 °C than their contrast fabrics of the same color. In addition, the colored coated cotton fabrics have general moisture permeability, abrasion resistance, excellent mechanical strength and anti-ultraviolet intrusion ability.

Experimental study on a moisture-conducting fiber-assisted tubular indirect evaporative cooler

Indirect evaporative cooling (IEC) is sustainable and energy-efficient for air cooling. The tubular indirect evaporative cooler (TIEC) is widely used because of its stable and efficient cooling efficiency. However, the conventional TIEC has problems such as poor wetting performance of the wet channel surface and high spray water flow rate. Therefore, this study proposes a novel TIEC based on moisture-conducting fiber to improve the distribution of water film outside the tube by taking the advantage of the characteristics of moisture-conducting fiber. Firstly, the moisture conductivity of different fiber materials is tested to select the moisture-conducting fiber for TIEC. Secondly, the performance of TIEC based on moisture-conducting fiber is experimentally investigated under various working conditions and configurations to obtain the TIEC configuration scheme with a relatively optimal performance. The results show that Coolmax moisture-conductive fiber is the best selection for TIEC applications because of its excellent ability to induce moisture transport and diffusion. The overall performance of the configuration scheme of TIEC based on moisture-conducting fiber supplemented with intermittent spraying strategy is relatively optimal. The proposed moisture-conducting fiber-assisted TIEC is able to enhance water migration and diffusion, thus improving the wetting performance, saving water and enhancing the cooling efficiency.

General-purpose numerical deposition modeling methodology based on mesh geometry reconstruction strategy in cold spray additive manufacturing system

Cold spraying is an emerging additive manufacturing (AM) process that is receiving more and more attention, with very broad applications. At present, the focus of cold spray additive manufacturing (CSAM) is on the study of deposition mechanisms and coating performances. The deposit growth is influenced by many kinematic spraying parameters, such as the spraying angle, the stand-off distance, and the traverse speed. Achieving the desired deposition by trial and error is costly. More importantly, the manufacturing of complex components layer by layer implies the observation of the deposition process in real time to adjust the spraying strategy. This paper suggests a general-purpose MATLAB numerical deposition modeling based on a mesh geometry reconstruction strategy in CSAM to simulate the deposition process more accurately. Simulations and experiments were carried out to verify the effectiveness of the proposed methodology. The results showed that the methodology could accurately simulate the deposit growth during the CSAM process, which provides a practical guiding significance for CSAM system.

Efficient preparation of single-sided structural color fabrics with asymmetric wettability, angle-dependence and patternability based on liquid photonic crystals

Liquid photonic crystals (LPCs) with structural colors have become the most promising materials for preparing structural color fabrics, which have received extensive attention in textile printing and dyeing. However, the tedious and uncontrollable preparation process for LPCs and its expensive equipment for structural color fabrics with asymmetric wettability limit the practical application of structural color materials. Herein, inspired by the Janus wettability of the unidirectional moisture transport fabric, a simple and efficient approach is reported to fabricate single-sided structural color fabrics (SSCFs) with asymmetric wettability and angle dependence. To obtain asymmetrically wetted substrate fabrics, a low-cost, high-temperature assisted spraying strategy is used to build a hydrophobic layer on one side of the fabric. The ready-to-use LPCs with target mass fraction are accurately prepared by re-dispersing the dry poly(styrene-methyl methacrylate-acrylic acid) (P(St-MMA-AA)) microsphere powder and are uniformly scraped onto the hydrophilic side of the fabric to prepare SSCFs. The as-prepared samples show a brilliant and iridescent structural color, and their color is adjusted by varying the size of the P(St-MMA-AA) microspheres. The water contact angle of the front side (with structural colors) of SSCFs treated by sintering and water bath is 37°, which facilitates further encapsulation to improve the color fastness of SSCFs. Meanwhile, the photonic crystals on the fabric remain ordered. This work provides an alternative, low-cost and practical preparation scheme for the structural coloring of textiles based on LPCs.

Endowing versatility and antibacterial ability to composite coating via a spraying strategy

Study on polyphenylene sulfide coating with superhydrophobic and anti-corrosion has been made a significant enhancement, yet few of them have been applied to antibacterial research. This research innovatively compounded polyphenylene sulfide (PPS) with CuO/SiO2 nano filler, superhydrophobic and anti-corrosion CuO/SiO2/PPS coating with antibacterial effect was obtained by air spraying. Through the test, the water contact angle of the composite coating reached 151.51 ± 1°, and the sliding angle decreased to 5 ± 1°. The electrochemical corrosion current density of the composite coating is 4 orders of magnitude lower than that of bare iron sheet, and the impedance reaches 780,740 Ω cm2. After testing in acid, alkaline and salt solutions, the composite coating still shows promising chemical stability. Meanwhile, it shows positive performance in anti fouling and adhesion. Most importantly, the composite coating has a good inhibitory effect on the growth of Escherichia coli, Bacillus subtilis and Staphylococcus aureus, confirming the good synergistic effect of CuO and PPS. This work provides a new strategy for the multifunctional PPS composite coating.

Robust superhydrophobic SiO2/epoxy composite coating prepared by one-step spraying method for corrosion protection of aluminum alloy: Experimental and theoretical studies

In this work, a robust epoxy adhesive (EP) @ superhydrophobic SiO2 (SH-SiO2)-based superhydrophobic coating was prepared on the aluminum substrate by a simple one-step spraying strategy. The prepared EP@SH-SiO2 coating exhibits hierarchical micro/nanostructures and is capable of maintaining a contact angle of more than 150° after 1000 cm of abrasion length and 80 tape-peeling repetitions. Molecular dynamics (MD) simulations and quantum mechanics calculations show that the improved mechanical resistance is attributed to the enhanced interfacial interaction between the EP@SH-SiO2 coating and the underlying substrate induced by the epoxy adhesive. Electrochemical measurements in 3.5 wt% NaCl solution show the corrosion inhibition efficiency of the EP@SH-SiO2 coating reaches up to 99.99%, and even after 8 days of immersion, the low frequency impedance modulus of the EP@SH-SiO2 sample is still ∼1 order of magnitude higher than that bare aluminum, demonstrating excellent long-term corrosion protection. The diffusion behavior of the corrosive medium in the EP@SH-SiO2 coating was revealed by MD simulation to support the experimental results. Additionally, the EP@SH-SiO2 coating exhibits good chemical stability and hydrophobic repair properties. This work will provide a new perspective for the preparation and study of robust superhydrophobic aluminum for corrosion protection properties.

Double-spraying with different routes significantly improved control efficacies of herbicides applied by unmanned aerial spraying system: A case study with rice herbicides

An unmanned aerial spraying system (UASS) is one of the most important systems for herbicide applications. To date, no study has compared the control efficacies of herbicides applied by UASSs with different application strategies against weeds. We applied post-emergence (POST) herbicides using a six-rotor UASS on rice (Oryza sativa) fields with different spraying volumes (22.5, 30, 45, and 60 L ha−1) and different spraying route strategies (one-time spraying or two flight sorties routed in length and breadth). The spraying volume significantly affected (P < 0.05) control efficacies against Echinochloa spp., Leptochloa chinensis, Ammannia baccifera, Monochoria vaginalis, Cyperus difformis, and overall weeds. The spraying route strategy significantly affected control efficacies against Echinochloa spp., Leptochloa chinensis, Ammannia baccifera, and overall weeds. Treatment with the double-spraying strategy significantly increased the control efficacies against Echinochloa spp. and Leptochloa chinensis compared with one-time spraying. For weeds susceptible to herbicides applied, treatments with a spraying volume of 30 L ha−1 showed control efficacies >90%; for grassy weeds, UASS applications with double-spraying routed in length and breadth with a spraying volume of 60 L ha−1 did not show a significant difference with the manual spraying with a spraying volume of 450 L ha−1 in control efficacies. This study revealed different optimal spraying volumes for controlling different groups of rice weeds and demonstrated a new spraying strategy for UASS applications that can be used to improve herbicide application practices with UASSs.

Modeling and Optimal Control Analysis for Malaria Transmission with Role of Climate Variability

In this paper, we present a nonlinear deterministic mathematical model for malaria transmission dynamics incorporating climatic variability as a factor. First, we showed the limited region and nonnegativity of the solution, which demonstrate that the model is biologically relevant and mathematically well-posed. Furthermore, the fundamental reproduction number was determined using the next-generation matrix approach, and the sensitivity of model parameters was investigated to determine the most affecting parameter. The Jacobian matrix and the Lyapunov function are used to illustrate the local and global stability of the equilibrium locations. If the fundamental reproduction number is smaller than one, a disease-free equilibrium point is both locally and globally asymptotically stable, but endemic equilibrium occurs otherwise. The model exhibits forward and backward bifurcation. Moreover, we applied the optimal control theory to describe the optimal control model that incorporates three controls, namely, using treated bed net, treatment of infected with antimalaria drugs, and indoor residual spraying strategy. The Pontryagin’s maximum principle is introduced to obtain the necessary condition for the optimal control problem. Finally, the numerical simulation of optimality system and cost-effectiveness analysis reveals that the combination of treated bed net and treatment is the most optimal and least-cost strategy to minimize the malaria.

An all-in-one bio-inspired superhydrophobic coating with mechanical/chemical/physical robustness

Artificial superhydrophobic coatings with mechanical stability, chemical stability, and physical stability have been achieved separately. However, achieving these properties at the same time is still a challenge. In this paper, a novel combination of sintering and spraying strategy was proposed to design a 509 reagent (1, 1, 2, 3, 3, 3-hexafluoro-2-(trifluoromethyl)propane-1-sulfonate)@Cu nanoparticles/Cu mesh/Cu organic-inorganic multilayer superhydrophobic coating. Surprisingly, the superweting coatings exhibit strong mechanical robustness undergoing cyclic tape peeling, sand/sandpaper abrasion and ultrasonic treatment. At the same time, the superhydrophobic coatings are also exposed to high temperature, UV irradiation and boiling water treatment to test its chemical stability. Moreover, the superhydrophobic coatings demonstrate outstanding physical robustness undergoing tensile force due to the combination of 509 reagent, Cu nanoparticles and Cu mesh. With multifaceted robustness, this superhydrophobic multilayer coating could be used in high-tech equipment area (such as: wear-resistance moving machine components, microfluidic devices, fluid microchips, microreactors, and so on) with strong alternating or impact loads, high friction service, and chemical corrosion.