Surface-Embedding of Functional Micro-/Nanoparticles for Achieving Versatile Superhydrophobic Interfaces

Li, Zhe; Cao, Moyuan; Li, Peng; Zhao, Yuyan; Bai, Haoyu; Wu, Yuchen; Jiang, Lei

doi:10.1016/j.matt.2019.03.009

Cited by 130 publications

(68 citation statements)

References 57 publications

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“…The roughness of nano‐topography is the key factor for functions. For ensuring the stability of the functions, various topographies are designed by nature and researchers . To find the details how the biology enhances the stability of nano‐topographies on the upper surface has become an urgent problem .…”

Section: Figurementioning

confidence: 99%

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An Interlayer of Multiple Microscale Hollow Channels Enhances the Durability of Surface Topographies

Ding

Yang²,

et al. 2020

ChemNanoMat

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Self‐cleaning plays a significant role for natural beings, as it keeps surfaces dry and clean, which is beneficial for lowering the body's weight, absorbing more light, and preventing rotting. Various topographies have been created by nature to achieve these goals. The stability of surface topography is the most essential element for maintaining these functions. Here, we report a new method for lowering the elastic modulus and enhancing the durability of surface topography. In this study, we find that multi micro hollow channels interlayer of Lycorma Delicatula's wing could effectively transfer the stress from the upper surface to the interlayer and decrease the stress concentration on the surface nano‐topography, which enhances the durability of its surface functions. The simulation and artificial surface illustrate that this new design method provides a new way to decrease the elastic modulus and enhance topographic stability.

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Section: Figurementioning

confidence: 99%

“…For ensuring the stability of the functions, various topographies are designed by nature and researchers. [8][9][10][11][12][13] To find the details how the biology enhances the stability of nano-topographies on the upper surface has become an urgent problem. [14][15] The flexibility and designed micro-papillae protect the roughness topography on lotus leaf.…”

mentioning

confidence: 99%

An Interlayer of Multiple Microscale Hollow Channels Enhances the Durability of Surface Topographies

Ding

Yang²,

et al. 2020

ChemNanoMat

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“…The mechanism underpinning the unusual wetting transition phenomenon can be attributed to the adhesive layer that serves as both the adhesive and tunable wettability trigger for the reconfigurable membrane. During the ethanol-assisted process, the crosslinking polyacrylate network can partially swell and spontaneously migrate to the surface of paint nanoparticles driven by the capillary force, leading to the rearrangement of these particles in response to the adhesive flowing 40 , 41 . Such a mechanism is supported by the systematical characterization of surface morphology and chemical composition that the corresponding signal of the polyacrylate layer can be strongly detected on the PR-SSM surface after the joystick liquid treatment (Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

Universal and tunable liquid–liquid separation by nanoparticle-embedded gating membranes based on a self-defined interfacial parameter

Liu

et al. 2021

Nat Commun

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Superwetting porous membranes with tunable liquid repellency are highly desirable in broad domains including scientific research, chemical industry, and environmental protection. Such membranes should allow for controllable droplet bouncing or spreading, which is difficult to achieve for low surface energy organic liquids (OLs). Here we develop an interfacial physical parameter to regulate the OL wettability of nanoparticle-embedded membranes by structuring synergistic layers with reconfigurable surface energy components. Under the tunable solid-liquid interaction in the aggregation-induced process, the membranes demonstrate positive/negative liquid gating regularity for polar protic liquids, polar aprotic liquids, and nonpolar liquids. Such a membrane can be employed as self-adaptive gating for various immiscible liquid mixtures with superior separation efficiency and permeation flux, even afford successive achievement of high-performance in situ extraction-back extraction coupling. This study should provide distinctive insights into intrinsic wetting behaviors and have pioneered a rational strategy to design high-performance separation materials for diverse applications.

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“…For the preparation of slippery liquid tracks, we first fabricated the anisotropic stripes by using a commercialized three‐dimensional printer with polylactic acid (PLA) material ( Figure a). The orthogonal anisotropic tracks were facilely assembled through the cementing of flexible silicone rubble (Ecoflex 00–10), and the surface roughness of tracks was further improved via the surface embedding of fumed silica nanoparticles . Due to the incorporation of typical nanoscaled roughness, the water contact angle of the modified tracks was significantly increased from 63.7° ± 0.5° (pristine PLA) to 148.3° ± 2.8° (Figure a,b).…”

Section: Resultsmentioning

confidence: 99%

Unidirectional Liquid Manipulation Via an Integrated Mesh with Orthogonal Anisotropic Slippery Tracks

Cao

Bai

et al. 2019

Adv Funct Materials

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The rational manipulation of fluid behavior by functional interfaces plays an indispensable role in the development of advanced materials and devices involving liquid/solid interactions. Previous examples of the liquid "diode" that allows fluid penetration in only one direction rely mainly on the remarkable wettability gradient/contrast. Inspired by the wetting phenomena of the rice leaf and the Pitcher plant, an integrated mesh with orthogonal anisotropic slippery tracks (IMOAS) is presented here that can realize similar unidirectional droplet penetration using a distinct mechanism. The unidirectional droplet penetration can be conveniently switched via the 90° rotation of the IMOAS, showing a highly controllable liquid manipulation. The droplet tends to slip on the surface, which can maximize the contact area between the liquid and the tracks, and complies with the principle of the lowest surface energy. Based on this unique liquid controlling strategy, droplet manipulation of the IMOAS during fog harvesting and droplet self-regulation has been conducted to illustrate its potential applications. The current design could aid the understanding of liquid unidirectional penetration and unlock additional possibilities for the optimization of fluidrelated systems.

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Surface-Embedding of Functional Micro-/Nanoparticles for Achieving Versatile Superhydrophobic Interfaces

Cited by 130 publications

References 57 publications

An Interlayer of Multiple Microscale Hollow Channels Enhances the Durability of Surface Topographies

An Interlayer of Multiple Microscale Hollow Channels Enhances the Durability of Surface Topographies

Universal and tunable liquid–liquid separation by nanoparticle-embedded gating membranes based on a self-defined interfacial parameter

Unidirectional Liquid Manipulation Via an Integrated Mesh with Orthogonal Anisotropic Slippery Tracks

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