Facile fabrication of hierarchical textures for substrate-independent and durable superhydrophobic surfaces

Nanoscale, Год журнала: 2022, Номер 14(26), С. 9392 - 9400

Опубликована: Янв. 1, 2022

On account of their wide range applications in self-cleaning, anti-icing, frost suppression, etc., superhydrophobic surfaces have attracted considerate attention. However, most the can only be prepared on specific materials and are easily damaged case friction. In this work, we propose a facile method to achieve superhydrophobicity various substrate surfaces. By femtosecond laser direct processing, micron-level grooves protrusions constructed substrates form protective layer. Then, covered by polytetrafluoroethylene (PTFE) were scanned make superhydrophobic. Since PTFE micro-nano-particles evenly distributed protrusions, exhibit robust with excellent anti-friction performance that is independent properties. This work provides an efficient environmentally friendly path for achieving substrates.

Язык: Английский

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Wetting Ridge‐Guided Directional Water Self‐Transport

Advanced Science, Год журнала: 2022, Номер 9(34)

Опубликована: Окт. 17, 2022

Directional water self-transport plays a crucial role in diverse applications such as biosensing and harvesting. Despite extensive progress, current strategies for directional are restricted to short self-driving distance, single function, complicated fabrication methods. Here, lubricant-infused heterogeneous superwettability surface (LIHSS) is proposed on polyimide (PI) film through femtosecond laser direct writing lubricant infusion. By tuning the parameters of laser, wettability PI can be transformed into superhydrophobic or superhydrophilic. After trapping droplets superhydrophilic depositing excess lubricant, asymmetrical wetting ridge drives by an attractive capillary force LIHSS. Notably, maximum droplet distance approach ≈3 mm, which nearly twice long previously reported direction self-transport. Significantly, it demonstrated that this strategy makes possible achieve self-transport, anti-gravity pumping, chemical microreaction tilted This work provides efficient method fabricate promising platform realizing

Язык: Английский

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Airflow Triggered Water Film Self-Sculpturing on Femtosecond Laser-Induced Heterogeneously Wetted Micro/Nanostructured Surfaces

Nano Letters, Год журнала: 2024, Номер 24(10), С. 3133 - 3141

Опубликована: Март 4, 2024

Liquid manipulation is essential for daily life and modern industry, it widely used in various fields, including seawater desalination, microfluidic robots, biomedical engineering. Nevertheless, the current research focuses on of individual droplets. There are a few projects water film management. Here, we proposed facile method wind-triggered self-sculpturing based heterogeneous wettability surface, which achieved by femtosecond laser direct writing technology deposition. Under conditions airflow velocities thicknesses, three distinct behaviors were analyzed. As result, when thickness lower than 4.9 mm, self-sculpture process will occur until whole superhydrophobic surface dewetting. Four potential applications demonstrated, encryption, oil containers, reconfigurable patterning, self-splitting devices. This work provides new approach manipulating fluid control

Язык: Английский

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Nature-inspired adhesive systems

Chemical Society Reviews, Год журнала: 2024, Номер 53(16), С. 8240 - 8305

Опубликована: Янв. 1, 2024

Many organisms in nature thrive intricate habitats through their unique bio-adhesive surfaces, facilitating tasks such as capturing prey and reproduction. It's important to note that the remarkable adhesion properties found these natural biological surfaces primarily arise from distinct micro- nanostructures and/or chemical compositions. To create artificial with superior capabilities, researchers delve deeper into underlying mechanisms of captivating phenomena draw inspiration. This article provides a systematic overview various different mechanisms, focusing on surface chemistry, offering design principles for counterparts. Here, basic interactions models are introduced first. will be followed by an exploration research advancements adhesive including both dry wet/underwater along relevant characterization techniques. Special attention is paid stimulus-responsive smart tunable properties. The goal spotlight recent advancements, identify common themes, explore fundamental distinctions pinpoint present challenges prospects this field.

Язык: Английский

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Fabrication and applications of surface micro/nanostructures by femtosecond laser

Colloids and Interface Science Communications, Год журнала: 2024, Номер 59, С. 100770 - 100770

Опубликована: Фев. 7, 2024

With the ongoing advancement of processing technology, one hottest subjects is manufacturing materials with distinctive surface micro/nanostructures. Among these, femtosecond laser has been widely adopted as a high-precision and high-efficiency fabricating technology. When compared to other traditional methods, some advantages in controllable micro/nanostructures can fabricate wide range structures, including periodic microporous array structure, three-dimensional composite so on. They have many applications, optical anti-counterfeiting, anti-reflection, superhydrophobic superhydrophilic properties, This article reviews simplified mechanism material, typical fabricated by laser, applications laser-fabricated It proves technical prospect application potential fabrication

Язык: Английский

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Micro/Nano Hierarchical Crater‐Like Structure Surface With Mechanical Durability and Low‐Adhesion for Anti‐Icing/Deicing

Small, Год журнала: 2024, Номер 20(43)

Опубликована: Авг. 23, 2024

Superhydrophobic surfaces have attracted significant attention for their ability to prevent ice formation and facilitate deicing without requiring external energy. However, these are often vulnerable damage from forces, leading functional failure due poor mechanical stability, which limits widespread use. Drawing inspiration the hierarchical groove of rose petals micropapillae lotus leaves, a simple laser-based method is proposed create superhydrophobic surface with micro/nano crater-like structure (HCLS). To enhance surface, boiling water treatment applied induce dense nanostructures, resulting in an optimal contact angle (CA) 162° desirable sliding (SA) 2.0°. The initial adhesion strength HCLS as low 1.4 kPa remains below 10 even after 300 cm sandpaper abrasion. Furthermore, demonstrates excellent durability, maintaining its performance under conditions that simulate continuous impact sand extreme weather. This approach offers innovative design concept has potential advance development anti-icing future aircraft.

Язык: Английский

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Architecting Janus hydrogel evaporator with polydopamine-TiO2 photocatalyst for high-efficient solar desalination and purification

Separation and Purification Technology, Год журнала: 2022, Номер 304, С. 122403 - 122403

Опубликована: Окт. 19, 2022

Язык: Английский

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A new one-step approach for the fabrication of microgrooves on Inconel 718 surface with microporous structure and nanoparticles having ultrahigh adhesion and anisotropic wettability: Laser belt processing

Applied Surface Science, Год журнала: 2022, Номер 607, С. 155108 - 155108

Опубликована: Сен. 29, 2022

Язык: Английский

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Femtosecond laser processed superhydrophobic surface

Journal of Manufacturing Processes, Год журнала: 2023, Номер 109, С. 250 - 287

Опубликована: Дек. 19, 2023

Язык: Английский

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Nature-inspired hybrid wettability surface to enhance water management on bipolar plates of PEMFC

Chemical Engineering Journal, Год журнала: 2023, Номер 466, С. 143288 - 143288

Опубликована: Май 2, 2023

Язык: Английский

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