Self-Healing, Robust, Liquid-Repellent Coatings Exploiting the Donor–Acceptor Self-Assembly

Zhang, Jianhui; Singh, Vikramjeet; Huang, Wei; Mandal, Priya; Tiwari, Manish K.

doi:10.1021/acsami.2c20636

Cited by 9 publications

(3 citation statements)

References 66 publications

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“…where α, ρ, and τ mean absorptivity, reflectivity, and transmissivity, respectively. Since it is a relatively easy task to reduce absorptivity through modern means of material synthesis, the common strategy for enhancing transmission is to decrease reflectivity with antireflective (AR) coatings [89], including interference layers [89] and inhomogeneous layers or surface structures [90]. Inhomogeneous layers and surface structures call for a compromise between optical and mechanical properties [91], so it is not preferred.…”

Section: Optical Propertiesmentioning

confidence: 99%

Transparent Self-Cleaning Coatings: A Review

Xue

et al. 2023

Coatings

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Advanced coatings are essential to modern technologies as they optimise surface characteristics for different application scenarios. Transparent and self-cleaning coatings are increasingly used as protective coatings for various applications, such as foldable touchscreens, windows, and solar panels. Moreover, incorporating other functionalities such as high hardness, wear resistance, and flexibility into transparent and self-cleaning coatings is important for broadening the use cases. Although many kinds of multifunctional coatings have been developed, it is still difficult to embody several properties in one coating adequately as some properties, such as hardness and flexibility, are inherently contrastive. This review first describes basic principles, including wettability, photocatalytic reactions, photo-induced hydrophilic phenomena, and the implication of self-cleaning. The desired properties of multifunctional coatings are then listed and the methods for evaluating different properties are used. Recent progress in various preparation methods for multifunctional coatings, including the sol–gel, dip/spin, and chemical vapour deposition (CVD) methods, are also presented. Magnetron sputtering (MS) technology is widely used in coating preparation. Compared with chemosynthesis and CVD, MS is time-saving, suitable for industrial production, and environmentally friendly. Coatings prepared by MS usually possess excellent mechanical properties. Thus, we highlight the current research status of MS technology in multifunctional coating preparation. Moreover, according to the multilayer design structure of coatings, their optical and mechanical properties and self-cleaning ability can be controlled by combining the characteristics of different materials. Finally, combining photocatalytic materials such as TiO2 with other materials through a multilayer structure to obtain a multifunctional coating with excellent overall properties is discussed.

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Section: Optical Propertiesmentioning

confidence: 99%

Transparent Self-Cleaning Coatings: A Review

Xue

et al. 2023

Coatings

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“…Engineered surfaces with extreme wettability inspired by organisms such as lotus leaves [1,2], butterfly wings [3,4], desert beetles [5], shark skin [6], have been widespread used in the fields of military, industrial and agricultural productions. Especially in recent years, the potential of artificial superhydrophobic surfaces for applications in the fields of microfluidic devices [1,4], self-cleaning [2,[7][8][9], anti-icing [2,[10][11][12], fluid drag reduction [3,13], and corrosion resistance [5,7,14,15] have attracted increasing interests.…”

Section: Introductionmentioning

confidence: 99%

“…And the poor surface mechanical stability of normal superhydrophobic coatings is mainly characterized by a lack of adhesion between the coating and the substrate. To increase robustness, researchers have used micrometer-scale interconnected frameworks [9,11], nanocomposite coatings [14,15,29] or chemical grafting with stronger covalent bonds [7,30].…”

Section: Introductionmentioning

confidence: 99%

Preparation of robust superhydrophobic surface on PET substrate using Box-Behnken design and facile sanding method with PTFE powder

Wang,

Sheng

et al. 2024

J. Micromech. Microeng.

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Superhydrophobic surfaces have attracted increasing interests due to their excellent features, while achieving facile preparation of superhydrophobic surface with good mechanical stability is still a challenging work. In this paper, we prepared a superhydrophobic surface by sanding polytetrafluoroethylene powder directly onto the surface of a polyethylene terephthalate (PET) film by means of a simple sanding method with sandpaper. The fabrication parameters were firstly optimized using response surface methodology. Surface morphology and chemical composition of the fabricated surface were characterized by SEM, FTIR and XPS. The mechanical performance of the superhydrophobic PET surfaces was evaluated by tape peeling test, and potential applications of this surface in self-cleaning and anti-icing were finally carried out. The results showed that the water contact angle (WCA) up to 153.5° and sliding angle (SA) less than ~3° on PET surface could be prepared under the optimum conditions, and its superhydrophobicity of surfaces was attributed to the synergistically effect of low surface energy and surface roughness. The fabricated superhydrophobic surfaces also exhibited good resistance to abrasion, and they have great potential for application in the fields of self-cleaning and anti-icing.

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Transmembrane Inspired Mechano‐Responsive Elastomers with Synergized Traction‐Assisted Healing and Dual‐Channel Sensing

Chen,

Yu,

Tian

et al. 2024

Adv Funct Materials

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In the burgeoning field of bioinspired materials, the principles governing biological perception and self‐healing drive advancements in biomimetic mechano‐responsive materials, seamlessly integrating ionic signal sensing with self‐healing. While current research often emphasizes individual functionalities, the concurrent enhancement of both self‐healing and sensitivity in iontronic skins is often overlooked. Drawing inspiration from transmembrane proteins like TSP‐15, Piezo 1 and Piezo 2, renowned for recruiting repair factors, multifunctional molecular‐ionic regulatory sites are constructed within a polyurethane/ionic liquid composite system, leading to the development of a mechano‐responsive elastomer (i‐DAPU) that exhibited both rapid self‐healing (72 µm min−1) and impressive sensitivity (7012.05 kPa−1). Leveraging the dual functionalities of i‐DAPU in tandem with deep learning algorithms, a sophisticated system is devised for intelligently analyzing neural conditions in comatose patients based on muscle strength, achieving a remarkable 99.2% accuracy rate, holding significant promise for healthcare applications.

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Self-Healing, Robust, Liquid-Repellent Coatings Exploiting the Donor–Acceptor Self-Assembly

Cited by 9 publications

References 66 publications

Transparent Self-Cleaning Coatings: A Review

Transparent Self-Cleaning Coatings: A Review

Preparation of robust superhydrophobic surface on PET substrate using Box-Behnken design and facile sanding method with PTFE powder

Transmembrane Inspired Mechano‐Responsive Elastomers with Synergized Traction‐Assisted Healing and Dual‐Channel Sensing

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