Stainless steel anisotropic superhydrophobic surfaces fabrication with inclined cone array via laser ablation and post annealing treatment

Metal superhydrophobic surfaces with anisotropic wettability and adhesion have become more and more important due to their promising applications. Herein, we report a new fabrication strategy through a combination of pulsed laser ablation and low-temperature annealing post-processing. An inclined co...

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Published in:Journal of Central South University 2022-10, Vol.29 (10), p.3261-3269
Main Authors: Zhao, Yi-zhe, Hong, Ming-hui
Format: Article
Language:English
Subjects:
Annealing
Contact angle
Droplets
Durability
Engineering
Hydrophobicity
Laser ablation
Laser arrays
Low temperature
Metallic Materials
Pulsed lasers
Stainless steels
Water drops
Wettability
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cited_by cdi_FETCH-LOGICAL-c246t-d30d23886e4104089501e64ebf9cd0a372ba40de2fe1d1f3265d91c0e02636383
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description Metal superhydrophobic surfaces with anisotropic wettability and adhesion have become more and more important due to their promising applications. Herein, we report a new fabrication strategy through a combination of pulsed laser ablation and low-temperature annealing post-processing. An inclined cone structure array is made on stainless steel surfaces, and then 120 °C low-temperature annealing is applied. Such surface displays excellent mechanical durability and anisotropic superhydrophobicity. It is demonstrated experimentally that the contact angle of water droplets on the surface is different along the parallel (167° ±2°) and perpendicular directions (157° ±2°) of the inclined cone structure. The sliding behaviors of water droplets and mechanical durability of the inclined cone structures are studied. These surfaces obtained in a short time with environmentally friendly fabrication can be applied in industries for water harvesting, droplet manipulation, and pipeline transportation.
doi_str_mv 10.1007/s11771-022-5145-z
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subjects Annealing
Contact angle
Droplets
Durability
Engineering
Hydrophobicity
Laser ablation
Laser arrays
Low temperature
Metallic Materials
Pulsed lasers
Stainless steels
Water drops
Wettability
title Stainless steel anisotropic superhydrophobic surfaces fabrication with inclined cone array via laser ablation and post annealing treatment
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