Laser textured superhydrophobic surfaces and their applications for homogeneous spot deposition
By V. Ta, A. Dunn, T. Wasley, Ji Li, R. Kay, Jonathan Stringer, Patrick J. Smith, E. Esenturk, C. Connaughton, J. Shephard. 2016
264 citations recorded by the source corpus.
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.
Subfields: Electrical and Electronic Engineering, Surfaces, Coatings and Films
View Paper: https://www.semanticscholar.org/paper/3b3a804285b94ae4d29f33d6cf4463c6be5da6c2
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In Electrical and Electronic Engineering
In Surfaces, Coatings and Films
- Hussam Jouhara
- Jeremey A Miller
- P. Gregorčič
- M. Hočevar
- Inge van den Boogaert
- Darem Ahmad
- U. Trdan
- R. Presswell
Citations in the corpus
- Transition from superhydrophilic to superhydrophobic state of laser textured stainless steel surface and its effect on corrosion resistance (2017, background): “[20] demonstrated that superhydrophobic surfaces on SS304 with steady contact angle of 154° and contact angle hysteresis of 4° can be fabricated via direct laser texturing (DLT) with cost-effective, compact nanosecond fiber laser system.”
- Hydrophilic and hydrophobic materials and their applications (2018, background): “The finer the pillars and structures become, the more the higher the hydrophobic effect is achieved (Kovtyukhova 1999; Ta et al. 2016).”