Introduction to the biomimetic design of interfacial materials for water overflow control

Liu, Zhuoxing; Jia, Peng; Yu, Cunlong; Dong, Zhichao

doi:10.1039/d2cc03224d

Cited by 3 publications

(2 citation statements)

References 45 publications

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“…The ability of surfaces to efficiently drain water has become an area of significant interest due to their various applications in self-cleaning, 1,2 anti-fogging, 3,4 anti-icing, 5,6 heat transfer enhancement, 7 anti-splash, [8][9][10][11] creatural survival, [12][13][14][15] signal transmission 16 and liquid-based material manipulation. 17 Previous studies have focused on designing surfaces that increase driving forces 1,12,[18][19][20][21][22] or reduce resistant forces 14,[23][24][25] to achieve fast water removal or drainage.…”

Section: Introductionmentioning

confidence: 99%

Pontederia crassipes inspired bottom overflow for fast and stable drainage

Gao,

Zhang,

Liu

et al. 2024

Soft Matter

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Section: Introductionmentioning

confidence: 99%

Pontederia crassipes inspired bottom overflow for fast and stable drainage

Gao,

Zhang,

Liu

et al. 2024

Soft Matter

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“…[ 3 ] Effective liquid transport is the most taxing and expensive stage of microfluidics. [ 9,10 ] Moreover, all advantages of microfluidics come at the price of raising significant but little‐noticed problems: multiple sophisticated pumping devices are required to overcome high resistance in the pipeline.…”

Section: Introductionmentioning

confidence: 99%

Liquid Shuttle Mediated by Microwick for Open‐Air Microfluidics

Liu

Zhan

et al. 2023

Adv Funct Materials

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Microfluidics has experienced rapid progress in additive manufacturing and microfluidic soft robots. The design of microfluidics is already moving into a more intelligent, integrated, and detachable direction. However, the pipeline resistance needs more external energy input to achieve high flow speed. Guided transport of liquid in the open-air-space microfluidics will be an effective solution. Inspired by the water shuttle on the pitcher plant tendril, herein, an open-air microfluidic transport device is designed that consists of a superhydrophilic microwick with multi-microgrooves by stereolithography. The liquid film confined in microgrooves can promote rapid fluid shuttle on the wet surface to enhance transport rate and inhibit the Rayleigh-Plateau instability from forming larger dripping drops. The dripping volume and threshold Capillary number are optimized for effective liquid transport and drainage. State-of-the-art microwick liquid shuttle technologies can guide liquid continuously in a prescribed direction or into multiple directions with 98% transport efficiency (the ratio of liquid collection volume and liquid injection volume) for water and 97% for ethanol in the closed-open-closed space. The proposed mechanism has the potential to streamline microfluidic applications-and, therefore, accelerate relevant liquid delivery development and ultimately their applications in microfluidic chip and additive manufacturing.

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Dual-bionic superwetting gears with liquid directional steering for oil-water separation

et al. 2023

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Developing an effective and sustainable method for separating and purifying oily wastewater is a significant challenge. Conventional separation membrane and sponge systems are limited in their long-term usage due to weak antifouling abilities and poor processing capacity for systems with multiple oils. In this study, we present a dual-bionic superwetting gears overflow system with liquid steering abilities, which enables the separation of oil-in-water emulsions into pure phases. This is achieved through the synergistic effect of surface superwettability and complementary topological structures. By applying the surface energy matching principle, water and oil in the mixture rapidly and continuously spread on preferential gear surfaces, forming distinct liquid films that repel each other. The topological structures of the gears facilitate the overflow and rapid transfer of the liquid films, resulting in a high separation flux with the assistance of rotational motion. Importantly, this separation model mitigates the decrease in separation flux caused by fouling and maintains a consistently high separation efficiency for multiple oils with varying densities and surface tensions.

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Introduction to the biomimetic design of interfacial materials for water overflow control

Abstract: This feature article summarizes the current research on the control of overflow behavior.

Cited by 3 publications

References 45 publications

Pontederia crassipes inspired bottom overflow for fast and stable drainage

Pontederia crassipes inspired bottom overflow for fast and stable drainage

Liquid Shuttle Mediated by Microwick for Open‐Air Microfluidics

Dual-bionic superwetting gears with liquid directional steering for oil-water separation

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