Comprehensively durable superhydrophobic metallic hierarchical surfaces <i>via</i> tunable micro-cone design to protect functional nanostructures

Han, Jinpeng; Cai, Ming; Lin, Yi; Liu, Weijian; Luo, Xianwu; Zhang, Hongjun; Wang, Kaiyang; Zhong, Minlin

doi:10.1039/c7ra13496g

Cited by 51 publications

(31 citation statements)

References 47 publications

(85 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bump features were clearly formulated on the laser textured areas of sample C as a result of cyclic heating and cooling in the localized area during the interaction between the laser beam and the substrate material. Therefore, the peak to valley height on sample C is much larger than that on sample D. The continuous surface micro/nanostructure with a larger peak to valley height are more likely to be better preserved during the cyclic abrasion with the SiC sandpaper [ 55 , 56 ]. With less damaged surface structure, sample C sustained continued superhydrophobicity, and thus exhibited much better abrasion resistance.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Anti-Reflective Surface with Superhydrophobicity/High Oleophobicity and Enhanced Mechanical Durability via Nanosecond Laser Surface Texturing

Wang

Zhuang

et al. 2020

Materials

View full text Add to dashboard Cite

In this work, anti-reflective surface with superhydrophobicity/oleophobicity and enhanced abrasion resistance was fabricated on steel alloy surface. Two different surface patterns (i.e., parallel microgrooves and spot arrays) were created by nanosecond laser ablation and chemical immersion. The surface micro/nanostructure, spectral reflectance, wettability, and abrasion resistance of all the samples were determined. The experimental results showed that the laser-chemical treated surfaces exhibited much lower spectral reflectance and significantly enhanced surface integrities compared with the untreated surface. Firstly, the contact angles of water, glycerol, and engine oil on the laser-chemical treated surfaces were increased up to 158.9°, 157.2°, and 130.0° respectively, meaning the laser-chemical treated surfaces achieved both superhydrophobicity and high oleophobicity. Secondly, the laser-chemical treated surface showed enhanced abrasion resistance. The experimental results indicated that the spectral reflectance of the laser-chemical treated surfaces remained almost unchanged, while the laser-chemical treated surface patterned with parallel microgrooves sustained superhydrophobicity with a water contact angle of 150.2° even after more than one hundred abrasion cycles, demonstrating the superior mechanical durability. Overall, this fabrication method has shown its effectiveness for fabrication of multifunctional metal surface integrating the surface functionalities of anti-reflectivity, superhydrophobicity/high oleophobicity, and enhanced abrasion resistance.

show abstract

Section: Resultsmentioning

confidence: 99%

Fabrication of Anti-Reflective Surface with Superhydrophobicity/High Oleophobicity and Enhanced Mechanical Durability via Nanosecond Laser Surface Texturing

Wang

Zhuang

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…Pendurthi et al used a CO2 laser engraving machine to obtain a superoleophobic textured surface [11]. Han et al employed an ultrafast laser to fabricate a superoleophobic textured surface [12]. Therefore, the texture may repel oil and lubricant cannot seep into the texture.…”

Section: The Influencing Factor Of the Texture's Oil-storage Capacitymentioning

confidence: 99%

The Secondary Lubrication Effect under Fluid Lubrication

Yang¹,

Zhang²

2021

dtmse

View full text Add to dashboard Cite

Surface texturing under fluid lubrication has been effectively used to improve the tribological performance. However research on the 'secondary lubrication effect' in the later stage of fluid lubrication is scarce. This study aimed to examine the friction reduction mechanism of the 'secondary lubrication effect' under fluid lubrication and to investigate factors that affect the effect. Lubrication models were developed under fluid lubrication. Friction force and hydrodynamic pressure of the lubricant were analyzed. Furthermore, the texture's oil-storage and -release capacities which may affect the 'secondary lubrication effect' were studied respectively. The results showed that the 'secondary lubrication effect' reduced friction by generating hydrodynamic pressure. The friction force in the later stage was higher than that in the early stage of fluid lubrication. The decrease in friction caused by the 'secondary lubrication effect' decreases in proportion with the loss of the lubricant. The lubricant infiltration capacity will affect the 'secondary lubrication effect' by influencing the texture's oil-storage capacity. Additionally, the release mechanism of the lubricant inside the texture was also obtained. Texture depth had a significant effect on the'secondary lubrication effect' by affecting the texture's oil-release capacity.

show abstract

“…Usually, harsh mechanical abrasions are performed by various means to judge about the degradation of wetting properties [16][17][18], but there is not a standardized test to validate the durability of such functional response. In this research, the cleaning cycles were performed in reciprocating mode (see Fig.…”

Section: Reciprocating Cleaning Cyclesmentioning

confidence: 99%

Lotus-Leaf Inspired Surfaces: Hydrophobicity Evolution of Replicas Due to Mechanical Cleaning and Mold Wear

Romano

García‐Girón

Penchev

et al. 2020

Journal of Micro and Nano-Manufacturing

View full text Add to dashboard Cite

Inspired from the low wetting properties of Lotus leaves, the fabrication of dual micro/nanoscale topographies is of interest to many applications. In this research, superhydrophobic surfaces are fabricated by a process chain combining ultrashort pulsed laser texturing of steel inserts and injection molding to produce textured polypropylene (PP) parts. This manufacturing route is very promising and could be economically viable for mass production of polymeric parts with superhydrophobic properties. However, surface damages, such as wear and abrasion phenomena, can be detrimental to the attractive wetting properties of replicated textured surfaces. Therefore, the final product lifespan is investigated using mechanical cleaning of textured PP surfaces with multipurpose cloths following the ASTM D3450 standard. Second, the surface damage of replication masters after 350 injection molding cycles with glass-fiber-reinforced PP, especially to intensify mold wear, was investigated. In both cases, the degradation of the dual-scale surface textures had a clear impact on surface topography of the replicas and thus on their wetting properties, too.

show abstract

Comprehensively durable superhydrophobic metallic hierarchical surfaces via tunable micro-cone design to protect functional nanostructures

Abstract: Superhydrophobic metallic hierarchical surfaces with micro-cones designed to protect functional nanostructures exhibit outstanding comprehensive mechanical durability.

Cited by 51 publications

References 47 publications

Fabrication of Anti-Reflective Surface with Superhydrophobicity/High Oleophobicity and Enhanced Mechanical Durability via Nanosecond Laser Surface Texturing

Fabrication of Anti-Reflective Surface with Superhydrophobicity/High Oleophobicity and Enhanced Mechanical Durability via Nanosecond Laser Surface Texturing

The Secondary Lubrication Effect under Fluid Lubrication

Lotus-Leaf Inspired Surfaces: Hydrophobicity Evolution of Replicas Due to Mechanical Cleaning and Mold Wear

Contact Info

Product

Resources

About