Journal
APPLIED SURFACE SCIENCE
Volume 537, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2020.147808
Keywords
Laser texturing; Superhydrophobicity; Morphology; Metrological characteristics
Categories
Funding
- Engineering Mechanics Centre at UOW
- Australian Research Council [DP170103173, LP160101871]
- Australian Research Council [LP160101871] Funding Source: Australian Research Council
Ask authors/readers for more resources
Picosecond laser texturing was applied to enamel to produce superhydrophobic coatings by covalently absorbing fluorosilane agents. The study revealed multiscaled surface structures with excellent water-repelling properties and proposed a surface area index for the Cassie-Baxter hydrophobic state. The significant role of surface metrology in producing hierarchical morphologies for stable superhydrophobicity was demonstrated in the study.
In this study, picosecond laser texturing was applied to enamel (an inorganic glass material) with micro-features that were then covalently absorbed with fluorosilane agents to produce superhydrophobic coatings. The resultant surfaces showed multiscaled structures of broccoli-like and cone-shaped pillars that resulted in excellent water-repelling properties with a water contact angle approaching 180. The results proposed a surface area index to obtain the Cassie-Baxter hydrophobic state. The study also discussed the correlation of surface areal parameters to the Cassie-Baxter non-wetting state of the silanized samples. Most laser textured samples of ultrahigh water contact angles had similar surface metrological characteristics to natural leaves like alocasia odora and agave. The sample hierarchical surface structures had waviness constituents ofplatykurtic distribution, which were decorated with nano-submicron remelted enamel debris, which had leptolartic distribution. The study has demonstrated the significant roles of surface metrology in the production of hierarchical morphologies to achieve the stable Cassie-Baxter superhydrophobicity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available