Biomimetic Fog Collector with Hybrid and Gradient Wettabilities

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(33), P. 43694 - 43703

Published: Aug. 8, 2024

Water scarcity is a global problem and collecting water from the air viable solution to this crisis. Inspired by Namib Desert beetle, leaf venation spider silk, we designed an integrated biomimetic system with hybrid wettability gradient. The hydrophilic–hydrophobic design that bionomics desert beetle's back can construct three-dimensional topography layer on surface, expanding contact area fog flow thus improving droplet trapping efficiency. venation-like structure gradient not only provides planned path for transportation, but also accelerates removal under synergistic effect of gravity driving force, further surface regeneration rate. collector combines capture, coalescence, separation, storage capabilities, which new ideas future high-efficiency collectors.

Language: Английский

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Janus Spherical Robot With Multiple Wettabilities for Droplet/ Bubble Manipulation

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 15, 2024

Abstract The flexible manipulation and directional transport of fluids, including droplets bubbles, are foundational to numerous applications. Fluid based on external field stimulation fixed structures has a wide range applications in both natural artificial materials, such as water collection, electrolysis, droplet energy medical diagnosis, etc. However, bubbles exhibit opposite wettability, the inherent opposition between hydrophilicity hydrophobicity presents significant challenge developing system capable manipulating bubbles. Here, inspired by multiple organisms, magnetic‐actuated Janus spherical robot with switchable wettability driving core or solid‐like slippery surface platform is proposed, which achieves dual programmable Furthermore, can achieve transition from superhydrophobic superhydrophilic within 8 min under UV light. It noteworthy that demonstrates superior capabilities speed carrier volume liquid (bubbles), reach 18 (13) cm s −1 800 (500) µL, respectively. This strategy provides novel reliable method for automated broadens their

Language: Английский

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Complementary Superwetting Structures Treated by a Femtosecond Laser for Simultaneous Spontaneous Directional Transport of Water Droplets and Underwater Bubbles

Langmuir, Journal Year: 2024, Volume and Issue: 40(47), P. 25275 - 25284

Published: Nov. 13, 2024

The control of fluid transport is crucial and has broad applications in the fields intelligent systems microfluidics. However, current studies usually focus on spontaneous directional a single type or require complex preparation processes. In this paper, femtosecond laser direct processing complementary superwetting structures using polyimide/polytetrafluoroethylene proposed, for first time, to realize simultaneous water droplets underwater bubbles without any additional energy chemical treatment. flexible fabrication enables creation diverse structures, facilitating achievement linear curvilinear structures. addition, relevant self-transporting reactions bubble switching are presented. This technique provides novel approach fabricate patterned surfaces transport, microbiology, chemistry.

Language: Английский

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The preparation and characterization of lubricant-infused silicone rubber surface based on laser-splicing-scan microstructure

Optics and Lasers in Engineering, Journal Year: 2024, Volume and Issue: 179, P. 108269 - 108269

Published: May 4, 2024

Language: Английский

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