Ta, VD, Dunn, A, Wasley, TJ et al. (7 more authors) (2016) Laser textured superhydrophobic surfaces and their applications for homogeneous spot deposition. Applied Surface Science, 365. pp. 153-159. ISSN 0169-4332
Abstract
This work reports the laser surface modification of 304S15 stainless steel to develop superhydrophobic properties and the subsequent application for homogeneous spot deposition. Superhydrophobic surfaces, with steady contact angle of ∼154° and contact angle hysteresis of ∼4°, are fabricated by direct laser texturing. In comparison with common pico-/femto-second lasers employed for this patterning, the nanosecond fiber laser used in this work is more cost-effective, compact and allows higher processing rates. The effect of laser power and scan line separation on surface wettability of textured surfaces are investigated and optimized fabrication parameters are given. Fluid flows and transportations of polystyrene (PS) nanoparticles suspension droplets on the processed surfaces and unprocessed wetting substrates are investigated. After evaporation is complete, the coffee-stain effect is observed on the untextured substrates but not on the superhydrophobic surfaces. Uniform deposition of PS particles on the laser textured surfaces is achieved and the deposited material is confined to smaller area.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | Superhydrophobic surface; Nanosecond laser texturing; Coffee-stain effect; Suppression of the coffee-stain effect; Stainless steel |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Medical and Biological Engineering (iMBE) (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/L017415/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 28 Jun 2016 15:19 |
Last Modified: | 28 Jun 2016 15:19 |
Published Version: | http://dx.doi.org/10.1016/j.apsusc.2016.01.019 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.apsusc.2016.01.019 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:100723 |