Electrodeposited surfaces with reversibly switching interfacial properties

Liu, Yue; Zhao, Liyan; Lin, Jianjian; Yang, Shikuan

doi:10.1126/sciadv.aax0380

Cited by 62 publications

(42 citation statements)

References 42 publications

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“…Upon the application of 700-V, 50-Hz electric voltage on the solid, the water drop started to experience a wetting-dewetting state and was directionally transported at a speed of 0.15 mm/s (73). The electrowetting method to trigger liquid transport is typically relayed on patterning electrodes on the substrate (74)(75)(76). This wetting behavior is approximated by the well-known Young-Lippmann equation cos…”

Section: External Field-induced Gradient For Directional Liquid Dynamicsmentioning

confidence: 99%

Directional liquid dynamics of interfaces with superwettability

2020

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Natural creatures use their surface structures to control directional liquid dynamics for survival. Learning from nature, artificial superwetting materials have triggered technological revolutions in many disciplines. To improve controllability, researchers have attempted to use external fields, such as thermal, light, magnetic, and electric fields, to assist or achieve controllable liquid dynamics. Emerging directional liquid transport applications have prosperously advanced in recent years but still present some challenges. This review discusses and summarizes the field of directional liquid dynamics on natural creatures and artificial surfaces with superwettabilities and ventures to propose several potential strategies to construct directional liquid transport systems for fog collection, 3D printing, energy devices, separation, soft machine, and sensor devices, which are useful for driving liquid transport or motility.

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Section: External Field-induced Gradient For Directional Liquid Dynamicsmentioning

confidence: 99%

Directional liquid dynamics of interfaces with superwettability

2020

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“…Last but not least, smart wettable surfaces are also used in other fields, condensation heat transfer [177] , self-cleaning prints [178] , smart textile [179] , encryption [180] and so on. There is no doubt that smart surfaces with switchable wettability will bring progress to our lives, and provide new ideas and approaches for the development of industrial sets, biomedical materials and smart agricultural materials.…”

Section: Smart Soft Roboticmentioning

confidence: 99%

Smart Bionic Surfaces with Switchable Wettability and Applications

Fan

Liu

et al. 2021

J Bionic Eng

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In order to satisfy the needs of different applications and more complex intelligent devices, smart control of surface wettability will be necessary and desirable, which gradually become a hot spot and focus in the field of interface wetting. Herein, we review interfacial wetting states related to switchable wettability on superwettable materials, including several classical wetting models and liquid adhesive behaviors based on the surface of natural creatures with special wettability. This review mainly focuses on the recent developments of the smart surfaces with switchable wettability and the corresponding regulatory mechanisms under external stimuli, which is mainly governed by the transformation of surface chemical composition and geometrical structures. Among that, various external stimuli such as physical stimulation (temperature, light, electric, magnetic, mechanical stress), chemical stimulation (pH, ion, solvent) and dual or multi-triggered stimulation have been sought out to realize the regulation of surface wettability. Moreover, we also summarize the applications of smart surfaces in different fields, such as oil/water separation, programmable transportation, anti-biofouling, detection and delivery, smart soft robotic etc. Furthermore, current limitations and future perspective in the development of smart wetting surfaces are also given. This review aims to offer deep insights into the recent developments and responsive mechanisms in smart biomimetic surfaces with switchable wettability under external various stimuli, so as to provide a guidance for the design of smart surfaces and expand the scope of both fundamental research and practical applications.

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“…Superwetting surfaces play a critical role in a wide range of engineering applications such as sensor, water desalination and condensation heat transfer due to the special dynamic liquid–solid interfacial wetting behavior. [ 1–7 ]…”

Section: Introductionmentioning

confidence: 99%

Design of Hybrid Superwetting Surfaces with Self‐Driven Droplet Transport Feature for Enhanced Condensation

Tang

Yang

et al. 2021

Adv Materials Inter

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Patterned hybrid superwetting surfaces that function in drop‐film‐wise condensation mode have great potential applications in heat transfer devices, water desalination, etc., due to the high performance of condensate transport. However, design and combination strategy for pattern optimization are still not clear. In this work, superhydrophobic surfaces with wedge‐shaped superhydrophilic patterns are created for enhanced condensation. Dependence of geometry, size, and combination of the patterns on droplet transporting and heat transfer coefficient is investigated. Results imply that superhydrophobic surface with array of single‐wedge‐shaped superhydrophilic patterns shows 30% improvement of heat transfer coefficient when compared with superhydrophobic surface, due to rapid condensate transferring from drop‐wise to film‐wise region, condensate converging and departing from the film‐wise region. Additionally, when compared with the surface with array of cluster‐wedge‐shaped superhydrophilic patterns, the surface with array of single‐wedge‐shaped superhydrophilic patterns have higher condensation efficiency because of the larger total circumference, which donate greater condensate transferring capacity. Moreover, single‐wedge‐shaped superhydrophilic patterns with large size show higher heat transfer coefficient than the patterns with small size due to lower saturated vapor pressure. This new fundamental insight can be used to develop new hybrid superwetting surfaces intended on engineering applications, such as water production and heat transfer.

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Electrodeposited surfaces with reversibly switching interfacial properties

Cited by 62 publications

References 42 publications

Directional liquid dynamics of interfaces with superwettability

Directional liquid dynamics of interfaces with superwettability

Smart Bionic Surfaces with Switchable Wettability and Applications

Design of Hybrid Superwetting Surfaces with Self‐Driven Droplet Transport Feature for Enhanced Condensation

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