Near-infrared light accurately controllable superhydrophobic surface from water sticking to repelling

Shao, Yanlong; Du, Wenbo; Ye, Fan; Zhao, Jie; Zhang, Zhihui; Liu, Ren

doi:10.1016/j.cej.2021.131718

Cited by 46 publications

(24 citation statements)

References 51 publications

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“…[43] Previous studies have focused more on efficient droplet manipulation methods and applications and have shown exciting progress. [40][41][42][43][44][45][46][47][48][49][50] However, obtaining mutually independent droplet arrays and simultaneously suppressing droplet evaporation, a crucial way to significantly improve the accuracy and applicative scenarios of open-surface microfluidics, has achieved a little breakthrough.…”

Section: Introductionmentioning

confidence: 99%

Mosaic Patterned Surfaces toward Generating Hardly‐Volatile Capsular Droplet Arrays for High‐Precision Droplet‐Based Storage and Detection

Jiao

et al. 2023

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Precise detection involving droplets based on functional surfaces is promising for the parallelization and miniaturization of platforms and is significant in epidemic investigation, analyte recognition, environmental simulation, combinatorial chemistry, etc. However, a challenging and considerable task is obtaining mutually independent droplet arrays without cross‐contamination and simultaneously avoiding droplet evaporation‐caused quick reagent loss, inaccuracy, and failure. Herein, a strategy to generate mutually independent and hardly‐volatile capsular droplet arrays using innovative mosaic patterned surfaces is developed. The evaporation suppression of the capsular droplet arrays is 1712 times higher than the naked droplet. The high evaporation suppression of the capsular droplet arrays on the surfaces is attributed to synergistic blocking of the upper oil and bottom mosaic gasproof layer. The scale‐up of the capsular droplet arrays, the flexibility in shape, size, component (including aqueous, colloidal, acid, and alkali solutions), liquid volume, and the high‐precision hazardous substance testing proves the concept's high compatibility and practicability. The mutually independent capsular droplet arrays with amazingly high evaporation suppression are essential for the new generation of high‐performance open‐surface microfluidic chips used in COVID‐19 diagnosis and investigation, primary screening, in vitro enzyme reactions, environmental monitoring, nanomaterial synthesis, etc.

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Section: Introductionmentioning

confidence: 99%

Mosaic Patterned Surfaces toward Generating Hardly‐Volatile Capsular Droplet Arrays for High‐Precision Droplet‐Based Storage and Detection

Jiao

et al. 2023

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“…Reprogrammed micro/nanostructures that can reversibly deform into multiple configurations as demanded have aroused enormous research interests for its broad application prospects in controllable friction, , tunable wettability, − optical engineering, − etc. , Up to date, various responsive materials that respond to different stimuli (e.g., light, heat, electricity, and magnets. , ) including elastic polydimethylsiloxane (PDMS) substrate, magnetic substance, , shape memory polymers (SMPs), − etc., have been adopted for realizing the controllable micro/nanostructure deformation. Among those, the SMPs possess particular advantages.…”

Section: Introductionmentioning

confidence: 99%

Precise Controlling of Friction and Adhesion on Reprogrammable Shape Memory Micropillars

Shao

Dou

Peng

et al. 2022

ACS Appl. Mater. Interfaces

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Microstructured surfaces with stimuli-responsive performances have aroused great attention in recent years, but it still remains a significant challenge to endow surfaces with precisely controlled morphological changes in microstructures, so as to get the precise control of regional properties (e.g., friction, adhesion). Herein, a kind of carbonyl iron particle-doped shape memory polyurethane micropillar with precisely controllable morphological changes is realized, upon remote near-infrared light (NIR) irradiation. Owing to the reversible transition of micropillars between bent and upright states, the micro-structured surface exhibits precisely controllable low-to-high friction transitions, together with the changes of friction coefficient ranging from ∼0.8 to ∼1.2. Hence, the changes of the surface friction even within an extremely small area can be precisely targeted, under local NIR laser irradiation. Moreover, the water droplet adhesion force of the surface can be reversibly switched between ∼160 and ∼760 μN, demonstrating the application potential in precisely controllable wettability. These features indicate that the smart stimuliresponsive micropillar arrays would be amenable to a variety of applications that require remote, selective, and on-demand responses, such as a refreshable Braille display system, micro-particle motion control, lab-on-a-chip, and microfluidics.

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“…Thus, FRCs with highly efficient and eco-friendly properties are particularly attractive in marine antifouling applications [17][18][19]. Among those, as one of the most common FRCs, poly(dimethylsiloxane) (PDMS) possesses Coatings 2022, 12, 232 2 of 11 both a low elastic modulus and low surface energy, on which the organisms only weakly adhere to the surfaces and can be readily removed from the PDMS surface by gentle mechanical cleaning or the shear forces of water flow, without the involvement of any chemical/biological antifoulants [20][21][22][23][24]. On the other hand, the low elastic modulus and low surface energy also endow the PDMS coating with a low adhesion force to regular substrates.…”

Section: Introductionmentioning

confidence: 99%

Mechanically Enhanced Self-Stratified Acrylic/Silicone Antifouling Coatings

Xue

Wang

et al. 2022

Coatings

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Great attention has been paid to silicone-based fouling-release coatings (FRCs) in the realm of maritime antifouling due to their highly efficient and eco-friendly properties, but many challenges remain for developing a silicone-based FRC that improves its adhesion performance without reducing the antifouling property. Herein, a non-toxic silicone-based FRC has been developed by integrating acrylic resin (AR) with a silicon resin (PDMS) to spontaneously form a self-stratified AR/PDMS coating. The AR/PDMS antifouling coating still has the same fouling-release performance but improved adhesion strength (from 0.4 to 2.0 MPa) in comparison with pristine PDMS. Moreover, the antifouling coating has proven to be extremely stable in different environments (such as pH, heating, and ultraviolet exposure). The study provides a facile and convenient self-stratified strategy to develop antifouling coatings, contributing to environmentally friendly coatings in marine applications.

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Near-infrared light accurately controllable superhydrophobic surface from water sticking to repelling

Cited by 46 publications

References 51 publications

Mosaic Patterned Surfaces toward Generating Hardly‐Volatile Capsular Droplet Arrays for High‐Precision Droplet‐Based Storage and Detection

Mosaic Patterned Surfaces toward Generating Hardly‐Volatile Capsular Droplet Arrays for High‐Precision Droplet‐Based Storage and Detection

Precise Controlling of Friction and Adhesion on Reprogrammable Shape Memory Micropillars

Mechanically Enhanced Self-Stratified Acrylic/Silicone Antifouling Coatings

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