Complete electrolytic plastron recovery in a low drag superhydrophobic surface
Complete electrolytic plastron recovery in a low drag superhydrophobic surface
We present a superhydrophobic surface capable of recovering the lubricious gas layer known as the "plastron"from a fully wetted state underwater. It is shown that full plastron recovery is possible without a second layer of structural hierarchy, which is prone to irreversible wetting transitions. This allows us to use a cheap, fast, and potentially scalable method to fabricate the surface from silicone and carbon black in a molding process. We demonstrate plastron recovery from the fully wetted state and immediate plastron recovery after pressure-induced wetting transitions. The wetting state can be measured remotely and quickly by measuring the capacitance. The slip length is measured as a 135 μm, agreeing well with the theory given the geometry of the surface. The ability of the surface to conform to small radii of curvature and withstand damage from loading is also demonstrated. The work presented here could allow superhydrophobic surfaces to reduce drag on ships and in pipes where the plastron would otherwise rapidly dissolve.
Superhydrophobic, dewetting, low drag, plastron recovery.
3483–3489
Lloyd, Ben Peter
97861a48-7b44-4bee-9962-e19e01ff3404
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73
9 February 2021
Lloyd, Ben Peter
97861a48-7b44-4bee-9962-e19e01ff3404
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Wood, Robert
d9523d31-41a8-459a-8831-70e29ffe8a73
Lloyd, Ben Peter, Bartlett, Philip N. and Wood, Robert
(2021)
Complete electrolytic plastron recovery in a low drag superhydrophobic surface.
ACS Omega, 6 (5), .
(doi:10.1021/acsomega.0c03466).
Abstract
We present a superhydrophobic surface capable of recovering the lubricious gas layer known as the "plastron"from a fully wetted state underwater. It is shown that full plastron recovery is possible without a second layer of structural hierarchy, which is prone to irreversible wetting transitions. This allows us to use a cheap, fast, and potentially scalable method to fabricate the surface from silicone and carbon black in a molding process. We demonstrate plastron recovery from the fully wetted state and immediate plastron recovery after pressure-induced wetting transitions. The wetting state can be measured remotely and quickly by measuring the capacitance. The slip length is measured as a 135 μm, agreeing well with the theory given the geometry of the surface. The ability of the surface to conform to small radii of curvature and withstand damage from loading is also demonstrated. The work presented here could allow superhydrophobic surfaces to reduce drag on ships and in pipes where the plastron would otherwise rapidly dissolve.
Text
Revised Manuscript - Complete Electrolytic Plastron Recovery in a Low Drag Superhydrophobic Surface
- Accepted Manuscript
More information
Published date: 9 February 2021
Additional Information:
Funding Information:
This work was funded by EPSRC “Green Tribology” (EP/J001023/1)
Publisher Copyright:
© Crown
Keywords:
Superhydrophobic, dewetting, low drag, plastron recovery.
Identifiers
Local EPrints ID: 446712
URI: http://eprints.soton.ac.uk/id/eprint/446712
ISSN: 2470-1343
PURE UUID: 780b5ab1-abea-4085-8520-a760c8f59c75
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Date deposited: 18 Feb 2021 17:33
Last modified: 17 Mar 2024 02:40
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Author:
Ben Peter Lloyd
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