Stretchable superlyophobic surfaces for nearly- lossless droplet transfer

Wang, Zhiwei; Yuan, Lifang; Wang, Lei; Wu, Tianzhun

doi:10.1016/j.snb.2017.01.051

Cited by 53 publications

(40 citation statements)

References 34 publications

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“…[321,[323][324][325][326] Especially, the magnetically responsive elastomer-silicon hybrid surface [325] reported by Kim group also exhibited light manipulation due to the tunable surface structural color, leading to other potential applications (Figure 16i-k). Mechanical strain or stretching is another important stimulus for on-demand droplet manipulation [327][328][329][330][331][332] because of the simplicity of control, rapidness of responsiveness and safety in operation. [329,330] On stretchable and elastomeric materials, the surface showed extreme reversible contrast between "droplet repellent state" and "droplet adhesive state" as a respond to the macroscopic switching between "released state" and "strained state."…”

Section: Surface-directed Liquid Transportmentioning

confidence: 99%

“…[329,330] On stretchable and elastomeric materials, the surface showed extreme reversible contrast between "droplet repellent state" and "droplet adhesive state" as a respond to the macroscopic switching between "released state" and "strained state." These materials had shown potential in lossless hand-like droplet tweezers [327,328,330] or programmable complex droplet control. [332] Other stimuli utilized to control the behaviors of droplets include temperature, photoirradiation, [333][334][335] electric field [336,337] and photoelectric synergetic effect.…”

Section: Surface-directed Liquid Transportmentioning

confidence: 99%

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Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Duan

Zheng

Zhao

et al. 2019

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Understanding the relationship between liquid manipulation and micro‐/nanostructured interfaces has gained much attention due to the wide potential applications in many fields, such as chemical and biomedical assays, environmental protection, industry, and even daily life. Much work has been done to construct various materials with interfacial liquid manipulation abilities, leading to a range of interesting applications. Herein, different fabrication methods from the top‐down approach to the bottom‐up approach and subsequent surface modifications of micro‐/nanostructured interfaces are first introduced. Then, interactions between the surface and liquid, including liquid wetting, liquid transportation, and a number of corresponding models, together with the definition of hydrophilic/hydrophobic, oleophilic/olephobic, the definition and mechanism of superwetting, including superhydrophobicity, superhydrophilicity, and superoleophobicity, are presented. The micro‐/nanostructured interface, with major applications in self‐cleaning, antifogging, anti‐icing, anticorrosion, drag‐reduction, oil–water separation, water collection, droplet (micro)array, and surface‐directed liquid transport, is summarized, and the mechanisms underlying each application are discussed. Finally, the remaining challenges and future perspectives in this area are included.

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Section: Surface-directed Liquid Transportmentioning

confidence: 99%

Section: Surface-directed Liquid Transportmentioning

confidence: 99%

Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Duan

Zheng

Zhao

et al. 2019

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“…The contribution of friction to the improved dry adhesives has been revealed recently . Third, during detachment stage (S‐4), the excellent stretchability of the EVA (up to four times elongation without damage in our previous experiments) leads to strong energy dissipation, and finally restore the T‐shaped microstructure back to the initial state of S‐1. The traditional JKR model did not take undercut and the polymer stretchability into consideration.…”

Section: Resultsmentioning

confidence: 52%

Reusable dry adhesives based on ethylene vinyl acetate copolymer with strong adhesion

Yuan

Wang

et al. 2018

J of Applied Polymer Sci

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This work proposed the design and fabrication method for T‐shaped dry adhesives based on stretchable ethylene‐vinyl acetate (EVA) copolymer, with strong normal adhesion strength up to 70 N cm−2. As fabricated adhesives based on the inexpensive soft replication process have comprehensive advantages including easy demolding applicable for various curable materials; self‐cleaning characteristic based on excellent nonwetting characteristics to both water and oil; reversible adhere/detach cycling for reusability. The flexible and transparent EVA dry adhesive films were readily fabricated to be novel dry‐adhesive coatings decorated on various substrates and shapes. We also explored the adhere and detach mechanism for the significantly enhanced adhesion of T‐shaped EVA microstructures, which indicated the increased contact area and the friction dissipation between the undercut and the substrate contribute to the adhesion enhancement, while the excellent elastic deformation of EVA may play an important role for adhesion enhance during the pulling‐off process. These results showed the great potential of high‐performance T‐shaped EVA‐based polymer dry adhesives for practical applications. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47296.

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“…Among all approaches, microstructured SLS is a promising and versatile platform for planar microfluidics, due to their excellent non-wetting characteristic and low flow resistance for almost any liquid. Wang et al [90] fabricated stretchable superlyophobic films based on ethylene-vinyl acetate (EVA), which demonstrate highly-flexible, transparent, and adhesive characteristics. They demonstrated the use of stretchable superlyophobic EVA as novel "droplet tweezer" for nearly lossless transfer of water, as well as oil droplets, which enables many potential applications as a surface microfluidic platform.…”

Section: Soft Lithographymentioning

confidence: 99%

Chemical and Physical Pathways for Fabricating Flexible Superamphiphobic Surfaces with High Transparency

et al. 2018

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Since the discovery of the self-cleaning properties of the lotus effect, the wetting of surfaces were intensively investigated due to their potential application in many industrial sectors. The transparency of flexible liquid repellent coatings are a major industrial problem and their economic consequences are widely known. Hence, a comprehensive understanding of the developments of flexible and transparent superamphiphobic surfaces is required in a number of technological and industrial situations. In this review, we aim to discuss the progress in the design, synthesis, fabrication techniques, and applications of flexible and transparent superamphiphobic surfaces. We start with an introduction, exploring the contact angles and wetting states for superhydrophilic, superhydrophobic, and superoleophobic surfaces, and continue with a review of the wetting transition of such surfaces. Then, we highlight the fabrication techniques involved for the preparation of flexible and transparent superamphiphobic surfaces. This review also discusses the key issues in the fabrication process and surfaces, and their features in improving durability characteristics and self-repellent performance. Then we suggest various recommendations for the improvement of mechanical durability along with potential future directions towards more systematic methods that will also be acceptable for industry. Finally, we conclude with some challenges and potential applications.

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Stretchable superlyophobic surfaces for nearly- lossless droplet transfer

Cited by 53 publications

References 34 publications

Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Reusable dry adhesives based on ethylene vinyl acetate copolymer with strong adhesion

Chemical and Physical Pathways for Fabricating Flexible Superamphiphobic Surfaces with High Transparency

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