Skip to main content

Research Repository

Advanced Search

Thermal Activation of Electrochemical Seed Surfaces for Selective and Tunable Hydrophobic Patterning

Speidel, Alistair; Murray, James W.; Bisterov, Ivan; Mitchell-Smith, Jonathon; Parmenter, Christopher; Clare, Adam T.

Thermal Activation of Electrochemical Seed Surfaces for Selective and Tunable Hydrophobic Patterning Thumbnail


Authors

Alistair Speidel

James W. Murray

Ivan Bisterov

Jonathon Mitchell-Smith

ADAM CLARE adam.clare@nottingham.ac.uk
Professor of Manufacturing Engineering



Abstract

Remarkable interfacial behaviors are observed in nature. Our efforts, directed toward replicating the structures, chemistries, and therefore functional properties of natural nonwetting surfaces, are competing with the result of billions of years of natural selection. The application of man-made surfaces is challenged by their poor longevity in aggressive environmental or applied service conditions. This study reports on a new approach for the creation of multiscale hierarchical surface patterns in metals, which exploits thermodynamic phenomena in advanced manufacturing processes. While hydrophobic coatings can be produced with relative ease by electrodeposition, these fractal-Type structures tend to have poor structural integrity and hence are not durable. In this method, "seed surfaces" are directly written onto substrates by selective electrodeposition, after which they are irradiated by a large-Area, pulsed electron beam to invoke a beading phenomenon, which is studied here. The length scale of these beads is shown to depend upon the melt time of the liquid metal. The created surfaces are shown to yield high water contact angles (145°) without subsequent chemical modification, and high adhesion properties reminiscent of the "rose petal" hydrophobic effect. The size and morphology and hence the hydrophobic effect of the surface beads generated are correlated with the thickness of the electrodeposited coating and hence the melt lifetime upon electron irradiation. This new rapid approach for tunable hydrophobic surface creation has applications for developing precision hydrophobic patterns and is insensitive to surface complexity.

Citation

Speidel, A., Murray, J. W., Bisterov, I., Mitchell-Smith, J., Parmenter, C., & Clare, A. T. (2020). Thermal Activation of Electrochemical Seed Surfaces for Selective and Tunable Hydrophobic Patterning. ACS Applied Materials and Interfaces, 12(6), 7744-7759. https://doi.org/10.1021/acsami.9b20121

Journal Article Type Article
Acceptance Date Jan 24, 2020
Online Publication Date Jan 24, 2020
Publication Date Feb 12, 2020
Deposit Date Feb 13, 2020
Publicly Available Date Jan 25, 2021
Journal ACS Applied Materials & Interfaces
Print ISSN 1944-8244
Electronic ISSN 1944-8252
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 12
Issue 6
Pages 7744-7759
DOI https://doi.org/10.1021/acsami.9b20121
Keywords General Materials Science
Public URL https://nottingham-repository.worktribe.com/output/3918896
Publisher URL https://pubs.acs.org/doi/10.1021/acsami.9b20121
Additional Information This document is the Published version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society . To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsami.9b20121

Files

Thermal Activation of Electrochemical Seed Surfaces for Selective and Tunable Hydrophobic Patterning (4.1 Mb)
PDF





Downloadable Citations