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Laser textured superhydrophobic surfaces and their applications for homogeneous spot deposition
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Ta, Van Duong, Dunn, Andrew, Wasley, Thomas J., Li, Ji, Kay, Robert W., Stringer, Jonathan, Smith, Patrick J., Esenturk, Emre, Connaughton, Colm and Shephard, Jonathan D. (2016) Laser textured superhydrophobic surfaces and their applications for homogeneous spot deposition. Applied Surface Science, 365 . pp. 153-159. doi:10.1016/j.apsusc.2016.01.019 ISSN 0169-4332.
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Official URL: http://dx.doi.org/10.1016/j.apsusc.2016.01.019
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.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Research Centres > Centre for Complexity Science Faculty of Science, Engineering and Medicine > Science > Mathematics |
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| Library of Congress Subject Headings (LCSH): | Surfaces (Technology), Lasers, Stainless steel, Nanotechnology | ||||||||||
| Journal or Publication Title: | Applied Surface Science | ||||||||||
| Publisher: | Elsevier BV | ||||||||||
| ISSN: | 0169-4332 | ||||||||||
| Official Date: | 1 March 2016 | ||||||||||
| Dates: |
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| Volume: | 365 | ||||||||||
| Page Range: | pp. 153-159 | ||||||||||
| DOI: | 10.1016/j.apsusc.2016.01.019 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||
| Date of first compliant deposit: | 2 June 2016 | ||||||||||
| Date of first compliant Open Access: | 3 June 2016 | ||||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||||||||
| Grant number: | EP/L017431/1, EP/L017350/1, EP/L016907/1 and EP/L017415/1 |
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