Selective de-silanization assisted wettability patterning of aluminum surfaces

Hybrid surfaces with spatial wettability control are key for wider applicability in microfluidics, water harvesting, and inkjet printing. The patterned wettable surface is limited in its use on a broad scale due to the technological challenges of applying it to curved surfaces. In this study, we exp...

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Bibliographic Details
Published in:Journal of materials science 2023-04, Vol.58 (15), p.6775-6783
Main Authors: Prakash, C. G. Jothi, Lee, Jeong-Won
Format: Article
Language:English
Subjects:
Aluminum
Characterization and Evaluation of Materials
Chemical etching
Chemistry and Materials Science
Classical Mechanics
Contact angle
Crystallography and Scattering Methods
Fluorine
Hydrophobic surfaces
Hydrophobicity
Inkjet printing
Materials Science
Metals & Corrosion
Microchannels
Microfluidics
Patterning
Polymer Sciences
Solid Mechanics
Surface energy
Wettability
Wetting
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Summary:Hybrid surfaces with spatial wettability control are key for wider applicability in microfluidics, water harvesting, and inkjet printing. The patterned wettable surface is limited in its use on a broad scale due to the technological challenges of applying it to curved surfaces. In this study, we explore and demonstrate a desilanization technique to pattern hydrophilic spots on a superhydrophobic background. A simple chemical etching technique followed by functionalization with a low-surface-energy polymer yielded superhydrophobicity with contact angle of 178° ± 1° and sliding angle 
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-023-08432-4