Superhydrophobic copper tubes with possible flow enhancement and drag reduction

Shirtcliffe, NJ, McHale, G, Newton, MI ORCID: 0000-0003-4231-1002 and Zhang, Y, 2009. Superhydrophobic copper tubes with possible flow enhancement and drag reduction. ACS Applied Materials and Interfaces, 1 (6), pp. 1316-1323. ISSN 1944-8244

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Abstract

The transport of a Newtonian liquid through a smooth pipe or tube is dominated by the frictional drag on the liquid against the walls. The resistance to flow against a solid can, however, be reduced by introducing a layer of gas at or near the boundary between the solid and liquid. This can occur by the vaporization of liquid at a surface at a temperature above the Leidenfrost point, by a cushion of air (e.g. below a hovercraft), or by producing bubbles at the interface. These methods require a continuous energy input, but a more recent discovery is the possibility of using a superhydrophobic surface. Most reported research uses small sections of lithographically patterned surfaces and rarely considers pressure differences or varying flow rates. In this work we present a method for creating a uniform superhydrophobic nanoribbon layer on the inside of round copper tubes of millimetric internal radius.

Item Type: Journal article
Publication Title: ACS Applied Materials and Interfaces
Creators: Shirtcliffe, N.J., McHale, G., Newton, M.I. and Zhang, Y.
Publisher: American Chemical Society (ACS Publications)
Place of Publication: Washington, DC
Date: 2009
Volume: 1
Number: 6
ISSN: 1944-8244
Identifiers:
NumberType
10.1021/am9001937DOI
Rights: Reprinted with permsision from [citation above]. Copyright © 2009 American Chemical Society.
Divisions: Schools > School of Science and Technology
Depositing User: EPrints Services
Date Added: 09 Oct 2015 09:56
Last Modified: 09 Jun 2017 13:14
URI: http://irep.ntu.ac.uk/id/eprint/5074

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