Designing of anisotropic gradient surfaces for directional liquid transport: Fundamentals, construction, and applications

The Innovation, Год журнала: 2023, Номер 4(6), С. 100508 - 100508

Опубликована: Сен. 9, 2023

Язык: Английский

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Drag reduction and antifouling of a spontaneous fast moving air film

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(30), С. 19268 - 19276

Опубликована: Янв. 1, 2024

A spontaneous fast-moving air film not only prevents the escape of supplied bubbles but also replenishes on a superhydrophobic surface, which shows an amazing 27% drag reduction rate and simultaneous 80% antifouling rate.

Язык: Английский

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Laser‐Tuned Surface Wettability Modification and Incorporation of Aluminum Nitride (AlN) Ceramics in Thermal Management Devices

Advanced Functional Materials, Год журнала: 2024, Номер 34(18)

Опубликована: Янв. 24, 2024

Abstract Aluminum nitride (AlN), a versatile ceramic with high thermal conductivity, electrical resistivity, and coefficient of expansion compatible silicon, is well‐suited for direct‐to‐chip cooling applications electronics, implementation in wide bandgap semiconductors, high‐temperature heat exchangers. Despite multiple advantages, AlN's liquid‐cooling often hindered by surface‐degrading effects working‐fluid‐induced hydrolysis. Herein, scalable ‐but highly tunable‐ wettability engineering approach introduced, that allows effective bulk AlN substrates enhanced two‐phase electronics. The prevents hydrolysis aqueous media establishes control over surface roughness, all the while maintaining integrity material properties underlying substrate. Demonstration new presented spontaneous, pumpless, liquid transport, necessity if such ceramics are to play an integral role as components sealed, phase‐change, wickless thermal‐management devices (e.g., vapor chambers or pipes) require rapid working‐fluid transport their multi‐phase interior. novelty this work lies establishing methodology utilizing further enhancing non‐oxide phase‐change heat‐transfer hermetic devices, thereby paving way toward intriguing next‐generation spreaders.

Язык: Английский

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Interfacial fluid manipulation with bioinspired strategies: special wettability and asymmetric structures

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Bioinspired fluid manipulating interfaces possessing special wettability, an asymmetric structure, and a geometric gradient were systematically reviewed, including history, classification, mechanisms, fabrication applications.

Язык: Английский

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A UV‐Resistant Heterogeneous Wettability‐Patterned Surface

Advanced Materials, Год журнала: 2023, Номер 35(42)

Опубликована: Июль 14, 2023

Preparing UV-resistant heterogeneous wettability patterns is critical for the practical application of surfaces with wettability. However, combining superhydrophobic and superhydrophilic materials on challenging. Inspired by structure cell membranes, a wettability-patterned surface (UPS) designed via laser ablation coating multilayer structures. silica can be created in situ covered TiO2 nanoparticles. The UV resistance time UPS -based more than two orders magnitude higher that obtained other molecular modification methods require mask. cell-membrane-like regulates migration internal siloxane chain segments hydrophilic hydrophobic regions surface. enables efficient patterning functional under irradiation, controlling wetting behavior liquids open-air systems. Furthermore, its remains stable even after 50 h intense irradiation (365 nm, 500 mW cm-2 ). These patterned will likely applied microfluidics, culture, energy conversion, water collection future.

Язык: Английский

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Spontaneous Directional Transportation Surface of Water Droplet and Gas Bubble: A Review

Applied Sciences, Год журнала: 2023, Номер 13(17), С. 9961 - 9961

Опубликована: Сен. 3, 2023

The spontaneous directional transportation (SDT) of water and gas has functions such as efficient collection, enhanced heat transfer, underwater drag reduction, so on, having great application prospects in aerospace navigation fields. Therefore, it is important to efficiently prepare droplet (SDWT) surfaces bubble (SDBT) apply them different In recent years, researchers have used biological structures the basis for their studies continued analyze SDT transport mechanism depth, aiming find more methods. this review, we first summarize basic theories related fluid transportation. Then, methods limitations corresponding SDWT SDBT are introduced discussed. addition, review applications SDBT. Finally, highlight challenges future perspectives

Язык: Английский

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Underwater Bubble Manipulation on Surfaces with Patterned Regions with Infused Lubricants

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(11), С. 14275 - 14287

Опубликована: Март 6, 2024

The flexible manipulation of underwater gas bubbles on solid substrates has attracted considerable research interest from scientists in the fields water electrolysis, bubble microreactions, drug delivery, and heat transfer. Inspired by oxygen-binding mechanisms aquatic organisms, have designed a series interfacial materials for use collecting gases, detecting grading bubbles, conducting microbubble reactions. Aerophilic surfaces are commonly used platforms due to their excellent gas-trapping properties. However, during transport, some retained rough structure aerophilic surface cause loss, which long run reduces transport function. In addition, is prone failure high-humidity high-pressure environments. lubricant-infused features an oil layer that remains stable substrate immiscible with water. Additionally, transported over without causing losses other than those dissolved These attributes make it more favorable surface. unique properties Nepenthes cactus spines, we developed patterned slippery [patterned (PLIS)] through laser etching ammonia facilitates coexistence superaerophobic surfaces. PLIS executes capture utilizing difference wettability measuring 78°, transports Laplace force buoyancy, regulates release restricting contact area PLIS. can be prepared rapidly affordably just about hour, its potential large-scale production high. Following tests shear, acid alkali resistance, corrosion exhibited impressive weathering resistance appears application extreme

Язык: Английский

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Dual-Liquid-Diode Janus Mesh with Multisuperwettability for Unidirectional Oil–Water Transportation

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(22), С. 26086 - 26096

Опубликована: Ноя. 8, 2024

Natural biological surfaces enable directional liquid transport and storage due to the specific characteristics surface morphologies. Inspired by these natural mechanisms, it is of interest have materials with an asymmetric energy or structures achieve unidirectional transportation. Herein, a dual-liquid-diode (DLD) Janus mesh superwettability on two sides has been designed via electrospraying, one side being superoleophobic/hydrophilic other superhydrophobic/oleophilic. The DLD was transportation both oil water in opposite direction concurrently, contrast membranes that were developed for single liquid. Oil can unidirectionally pass through without external supply air environments. This unique property enables high flexibility controllable multiphase scenarios. demonstrates promise future applications smart separation, on-demand oil–water delivery, fluid valve technologies.

Язык: Английский

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Dual-bioinspired Janus mesh membrane with controllable bubbles manipulation property for efficient water splitting and pure gas collection

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 682, С. 629 - 642

Опубликована: Ноя. 30, 2024

Язык: Английский

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Design of a self-cleanable multilevel anticounterfeiting interface through covalent chemical modulation

Materials Horizons, Год журнала: 2023, Номер 10(6), С. 2204 - 2214

Опубликована: Янв. 1, 2023

Counterfeit products have posed a significant threat to consumers safety and the global economy. To address this issue, extensive studies been exploring use of coatings with unclonable, microscale features for authentication purposes. However, ease readout, stability these against water, deposited dust, wear, which are required practical use, remain challenging. Here we report novel class chemically functionalizable combination physically unclonable porous topography distinct physiochemical properties (e.g., fluorescence, water wettability, adhesion) obtained through orthogonal chemical modifications (i.e., 1,4-conjugate addition reaction Schiff-base at ambient conditions). Unprecedentedly, self-cleanable coating is introduced develop multilevel anticounterfeiting interface. We demonstrate that fluorescent can be verified using deep learning. More importantly, spatially selective read naked eye via underwater exposure UV light illumination. Overall, results reported in work provide facile basis designing functional surfaces capable independent decryption authenticity.

Язык: Английский

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