Projects per year
Abstract
The surface with anisotropic superhydrophobicity has great potential applications for drag reduction, drug delivery and microfluidic devices. Observation from natural biological surfaces proved that directional microstructures are indispensable to realize anisotropic superhydrophobicity. However, current lithography-based manufacturing approaches have limited capabilities to scale-up for real world industrial applications. This paper proposes a hybrid laser ablation and chemical etching process for manufacturing ratchet-like microstructures on 316L stainless steel for the first time. It harvests the advantages of both processes. The laser ablation will form specified recast layer and covered by oxide layer on the specimen, and these two layers can be easily removed in the chemical etching process hence to obtain the periodic ratchet-like microstructures. According to the experimental results, the direction of microstructures is same as with the laser beam feed direction. The width and depth of microstructures also can be well-controlled by laser power and pitch. The specimens with pith of 25 μm have contact angle larger than 150°. And the droplet easily rolls off along the laser beam feed direction but is pinned tightly in the opposite direction.
Original language | English |
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Pages | 90-93 |
Number of pages | 4 |
Publication status | Published - 3 Jun 2019 |
Event | EUSPEN's 19th International Conference & Exhibition - Bilbao, Spain Duration: 3 Jun 2019 → 7 Jun 2019 Conference number: 19th |
Conference
Conference | EUSPEN's 19th International Conference & Exhibition |
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Country/Territory | Spain |
City | Bilbao |
Period | 3/06/19 → 7/06/19 |
Keywords
- laser ablation
- chemical etching
- superhydrophobic surface
Fingerprint
Dive into the research topics of 'A hybrid laser ablation and chemical etching process for manufacturing nature-inspired anisotropic superhydrophobic structures'. Together they form a unique fingerprint.Projects
- 2 Finished
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European Training Network on "Process Fingerprint for Zero-defec Net-shape MICROMANufacturing" H2020 MSCA ETN)
Luo, X. (Principal Investigator) & Qin, Y. (Co-investigator)
European Commission - Horizon Europe + H2020
1/10/15 → 30/09/19
Project: Research
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Micro-3D: Miniature Flexible & Reconfigurable Manufacturing System for 3D Micro-products
Luo, X. (Principal Investigator), Ion, W. (Co-investigator), Qin, Y. (Co-investigator), Jagadeesan, A. P. (Researcher) & Zeng, Q. (Researcher)
EPSRC (Engineering and Physical Sciences Research Council)
1/07/13 → 31/12/17
Project: Research
Datasets
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Data for: “A hybrid laser ablation and chemical etching process for manufacturing nature-inspired anisotropic superhydrophobic structures”
Cai, Y. (Creator) & Luo, X. (Creator), University of Strathclyde, 1 Aug 2019
DOI: 10.15129/bfe28d6e-3cf1-4089-93a6-d997cbd7dcb7
Dataset