In this work, micromilling and laser-etching microfabrication techniques are trialed for mimicking the super water repellence of the lotus leaf and the directional water droplet control of the Namib desert beetle. To further alter the surface wetting properties, subsequent ion-beam surface modification techniques are used. Ion-beam postprocessing is used to create an additional nanoroughness on a microstructure as well as a controllable Gibbs surface free energy change of the substrate material. The in-plane spreading for control (smooth) surfaces are compared to the micropatterned surfaces and combined micropatterned and ion-beam processed surfaces. Combined microscale surface engineering via milling or laser etching and ion-beam surface modification allows engineering both hydrophobic and mass-transport properties directly from a bulk material rather than involving a coating. Such surfaces have potential applications in advanced heat-exchanger technology (increasing the condensation heat transfer coefficient), wind turbine technologies (delaying or eliminating ice/frost formation under extreme weather conditions), as well as for atmospheric water harvesting and condensation control on industrial heat exchangers.
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December 2021
Research Article|
October 19 2021
Surface wetting on micromilled and laser-etched aluminum with ion-beam postprocessing
Kirill Misiiuk;
Kirill Misiiuk
a)
1
Department of Physics, University of Otago
, 730 Cumberland Street, North Dunedin, Dunedin 9016, New Zealand
2
MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington
, P.O. Box 600, Wellington 6140, New Zealand
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Sam Lowrey;
Sam Lowrey
1
Department of Physics, University of Otago
, 730 Cumberland Street, North Dunedin, Dunedin 9016, New Zealand
2
MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington
, P.O. Box 600, Wellington 6140, New Zealand
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Richard Blaikie;
Richard Blaikie
1
Department of Physics, University of Otago
, 730 Cumberland Street, North Dunedin, Dunedin 9016, New Zealand
2
MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington
, P.O. Box 600, Wellington 6140, New Zealand
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Josselin Juras;
Josselin Juras
3
Department of Mechanical and Manufacturing Engineering, Miami University
, 56 Garland Hall, 650 E. High St., Oxford, Ohio 45056
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Andrew Sommers;
Andrew Sommers
3
Department of Mechanical and Manufacturing Engineering, Miami University
, 56 Garland Hall, 650 E. High St., Oxford, Ohio 45056
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Jérôme Leveneur
Jérôme Leveneur
2
MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington
, P.O. Box 600, Wellington 6140, New Zealand
4
National Isotope Centre (NIC), GNS Science University
, 30 Gracefield Road, Lower Hutt, Wellington 5010, New Zealand
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a)
Electronic mail: [email protected]
Note: This paper is part of the Special Collection: 64th International Conference on Electron, Ion, And Photon Beam Technology and Nanofabrication, EIPBN 2021.
J. Vac. Sci. Technol. B 39, 062206 (2021)
Article history
Received:
July 09 2021
Accepted:
September 29 2021
Citation
Kirill Misiiuk, Sam Lowrey, Richard Blaikie, Josselin Juras, Andrew Sommers, Jérôme Leveneur; Surface wetting on micromilled and laser-etched aluminum with ion-beam postprocessing. J. Vac. Sci. Technol. B 1 December 2021; 39 (6): 062206. https://doi.org/10.1116/6.0001282
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