Directional Fluid Transport in Thin Porous Materials and its Functional Applications

Zhao, Yan; Wang, Hongxia; Zhou, Hua; Lin, Tong

doi:10.1002/smll.201601070

Cited by 200 publications

(138 citation statements)

References 61 publications

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“…The likely and potential applications are also reviewed including superamphiphobicity, self-cleaning, oil/water separation, UV-shielding, anti-bacterial/ biological implant, sensor, asymmetric/janus fabric, patterning, and self-healing surface. [208][209][210][211][212][213][214][215][216][217][218][219][220] Although great achievements have been made, there are still difficulties and challenges that need to be overcome. From the fundamental research point of view, there is still a lack of the basic mechanism on the interactions between textile and chemical reagents during the fabrication process.…”

Section: Conclusion and Future Prospectsmentioning

confidence: 99%

A review on special wettability textiles: theoretical models, fabrication technologies and multifunctional applications

et al. 2017

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Inspired by the superhydrophobic lotus surface in nature, special wettability has attracted a lot of interest and attention in both academia and industry. In this review, theoretical models and fabrication strategies of superhydrophobic textiles have been discussed in detail. The strategies for constructing fabric surfaces with an anti-wetting property are categorized and discussed based on the morphology of particles coated on the textile fibre. Such special wettability textile surfaces are demonstrated with selfcleaning, oil/water separation, self-healing, UV-blocking, photocatalytic, anti-bacterial, and flameretardant performances. Correspondingly, potential applications have been illustrated for self-cleaning, oil/water separation, asymmetric/anisotropic wetting janus fabric, microfluidic manipulation, and microtemplates for patterning. In each section, representative studies are highlighted with emphasis on the special wetting ability and other relevant properties. Finally, the difficulties and challenges for practical application were briefly discussed.

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Section: Conclusion and Future Prospectsmentioning

confidence: 99%

A review on special wettability textiles: theoretical models, fabrication technologies and multifunctional applications

et al. 2017

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“…As shown in Figure 2h, the as-obtained HPHCT-950 exhibits good hydrophilicity whereas the cotton-950 is hydrophobic. It is implied that the water can penetrate the macropore canal via capillary force, [11] resulting in the deep wetting. As a result, the material is more accessible to the electrolyte when serving as electrode.…”

Section: Morphological Microstructural and Compositional Characterimentioning

confidence: 99%

Controlled Design of a Robust Hierarchically Porous and Hollow Carbon Fiber Textile for High‐Performance Freestanding Electrodes

Wang

Liu

et al. 2019

Advanced Science

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For most carbon‐based materials, hierarchical porous structure including well‐defined macropores, mesopores, and micropores is commonly seen in 3D aerogels, monoliths, or some carbothermic natural biomass. However, because of the filiform character and long draw ratio, it is difficult to achieve such pore network as well as attain excellent mechanical performance in a 1D single carbon fiber system. To address this issue, an innovative hierarchical porous and hollow carbon textile (HPHCT) is developed via the “dynamic template (KOH, SiO2, and Al2O3) calcination” strategy. Unlike conventional one‐step activated carbonized fiber simply with meso or micropores, the fabricated textile generates honeycomb‐like macropores uniformly spreading on fiber surface. More importantly, the ultra‐lightweight yet flexible HPHCT is mechanically robust, superior to ordinary carbonized one. In addition, it delivers high capacitance of maximum 220 F g−1 as well as keeping long term stability with 100% retention after 10 000 cycles as freestanding electrodes in supercapacitor. Meanwhile, the all‐solid integrated symmetric HPHCT supercapacitors demonstrates its high potential in powering electronics for wearable energy storage application.

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“…[42][43][44][45][46][47][48][49][50][51] For a droplet on a solid or liquid surface, there is no driving force for droplet motion in the equilibrium state. When a wettability gradient is generated on the surface (Figure 2), imbalanced forces can be produced on the two opposite sides of the droplet.…”

Section: External-field-induced Directional Liquid Motion On a Surfacementioning

confidence: 99%

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

Zhang

et al. 2017

Advanced Materials

101

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External‐field‐responsive liquid transport has received extensive research interest owing to its important applications in microfluidic devices, biological medical, liquid printing, separation, and so forth. To realize different levels of liquid transport on surfaces, the balance of the dynamic competing processes of gradient wetting and dewetting should be controlled to achieve good directionality, confined range, and selectivity of liquid wetting. Here, the recent progress in external‐field‐induced gradient wetting is summarized for controllable liquid transport from movement on the surface to penetration into the surface, particularly for liquid motion on, patterned wetting into, and permeation through films on superwetting surfaces with external field cooperation (e.g., light, electric fields, magnetic fields, temperature, pH, gas, solvent, and their combinations). The selected topics of external‐field‐induced liquid transport on the different levels of surfaces include directional liquid motion on the surface based on the wettability gradient under an external field, partial entry of a liquid into the surface to achieve patterned surface wettability for printing, and liquid‐selective permeation of the film for separation. The future prospects of external‐field‐responsive liquid transport are also discussed.

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Directional Fluid Transport in Thin Porous Materials and its Functional Applications

Cited by 200 publications

References 61 publications

A review on special wettability textiles: theoretical models, fabrication technologies and multifunctional applications

A review on special wettability textiles: theoretical models, fabrication technologies and multifunctional applications

Controlled Design of a Robust Hierarchically Porous and Hollow Carbon Fiber Textile for High‐Performance Freestanding Electrodes

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

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