Improved Liquid Collection on a Dual‐Asymmetric Superhydrophilic Origami (Adv. Mater. 17/2023)

Bai, Haoyu; Wang, Xinsheng; Li, Zhe; Wen, Huiyi; Yang, Yifan; Li, Muqian; Cao, Moyuan

doi:10.1002/adma.202370123

Cited by 6 publications

(6 citation statements)

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“…The S-SLO with a depth of 2 mm can reach a maximum flux of 450 mL h −1 , which is five times the capacity of a flat patterned surface with similar size. 46 Alamir et al produce nanofiber mats using the electrostatic spinning technique, which are combined with hydrophilic polymers to collect fog from air. 47 It is found that the nanofibers can absorb up to 10% of their weight, and this value increases to 69% in the presence of hydrophilic reagents.…”

Section: Theoretical Basismentioning

confidence: 99%

“…Inspired by scallop shells, a shell-like superhydrophilic origami (S-SLO) with multiple parallel and asymmetric channels was proposed. The S-SLO with a depth of 2 mm can reach a maximum flux of 450 mL h –1 , which is five times the capacity of a flat patterned surface with similar size . Alamir et al produce nanofiber mats using the electrostatic spinning technique, which are combined with hydrophilic polymers to collect fog from air .…”

Section: Superwettable Surfacementioning

confidence: 99%

See 1 more Smart Citation

Bionic Surfaces for Fog Collection: A Comprehensive Review of Natural Organisms and Bioinspired Strategies

Ding,

Dong,

et al. 2023

ACS Appl. Bio Mater.

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Section: Theoretical Basismentioning

confidence: 99%

Section: Superwettable Surfacementioning

confidence: 99%

Bionic Surfaces for Fog Collection: A Comprehensive Review of Natural Organisms and Bioinspired Strategies

Ding,

Dong,

et al. 2023

ACS Appl. Bio Mater.

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“…[17] Currently, researchers investigating such hybrid patterned surfaces focus on material development by mimicking the surface chemistry and morphology of natural models. [12,20,27,28] As reviewed by Sun et al, [29] Wang et al, [30] and Yu et al, [31] several researchers have mimicked biosurfaces, such as spider silk, [32][33][34] cactus, [32,[34][35][36][37][38][39][40][41][42] scallop shell, [43] or Namib desert beetle, [18, and multi-bioinspired approaches have also been used. [13,20,[68][69][70][71][72] As in the approach presented here, various artificial fog harvesting surfaces are inspired by the Namib beetle.…”

Section: Introductionmentioning

confidence: 99%

Using Paper as a Biomimetic Fog Harvesting Material

Breuer,

Cordt,

Hiller

et al. 2024

Adv Materials Inter

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This study identifies important factors for designing an effective biomimetic paper‐based fog harvesting substrate by examining the harvesting properties of different surfaces, including glass, polyethylene, and superhydrophobic paper. In laboratory‐scale fogging tests, the wetting behavior of the substrates is characterized, and the importance of the tilt angle of the respective surface relative to the fog flow is elaborated. Because successful fog harvesting requires both efficient accumulation of water droplets on the surface (by condensation and collision) and sufficient but not excessive roll‐off of the liquid, the amount of water finally collected is clearly related to the pinning effect, which should prevent the smallest droplets from being carried away by the wind but must not lead to full and permanent wetting of the surface. Coalescence is identified as a major phenomenon to improve droplet roll‐off. In this context, superhydrophobic paper indicates to be a more effective water collector than glass or polyethylene, especially when oriented vertically, since it allows the droplets to roll off very efficiently. Finally, the addition of glass particles to the superhydrophobic coating is proposed as a means of enhancing pinning and improving the fog harvesting efficiency.

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“…Recent research has shown that the contact state in the microstructural array would be affected by the initial condition, which may change the liquid-solid interaction on an anisotropic surface. [10,[35][36][37][38][39][40] Due to the complexity of microstructural parameters, clarifying the solid-liquid-gas three-phase contact lines in the impacting process is challenging. Understanding the evolution of liquid-solid interaction on anisotropic surfaces is crucial for explaining directed droplet transport.…”

Section: Introductionmentioning

confidence: 99%

Velocity‐Switched Droplet Rebound Direction on Anisotropic Superhydrophobic Surfaces

Li,

Zhan,

Wang

2023

Small

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Droplet well‐controlled directional motion being an essential function has attracted much interest in academic and industrial applications, such as self‐cleaning, micro‐/nano‐electro‐mechanical systems, drug delivery, and heat‐transferring. Conventional understanding has it that a droplet impacted on an anisotropic surface tends to bounce along the microstructural direction, which is mainly dictated by surface properties rather than initial conditions. In contrast to previous findings, it demonstrates that the direction of a droplet's rebound on an anisotropic surface can be switched by designing the initial impacting velocity. With an increase in impacting height from 2 to 10 cm, the droplet successively shows a backward, vertical, and forward motion on anisotropic surfaces. Theoretical demonstrations establish that the transition of droplet bouncing on the anisotropic surface is related to its dynamic wettability during impacting process. Characterized by the liquid‐solid interaction, it is demonstrated that the contact state at small and large impacting heights induces an opposite resultant force in microstructures. Furthermore, energy balance analysis reveals that the energy conversion efficiency of backward motion is almost three times as that of traditional bouncing. This work, including experiments, theoretical models, and energy balance analysis provides insight view in droplet motions on the anisotropic surfaces and opens a new way for the droplet transport.

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Improved Liquid Collection on a Dual‐Asymmetric Superhydrophilic Origami (Adv. Mater. 17/2023)

Cited by 6 publications

References 0 publications

Bionic Surfaces for Fog Collection: A Comprehensive Review of Natural Organisms and Bioinspired Strategies

Bionic Surfaces for Fog Collection: A Comprehensive Review of Natural Organisms and Bioinspired Strategies

Using Paper as a Biomimetic Fog Harvesting Material

Velocity‐Switched Droplet Rebound Direction on Anisotropic Superhydrophobic Surfaces

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