Topography driven spreading

McHale, G, Shirtcliffe, NJ, Aqil, S, Perry, CC ORCID: https://orcid.org/0000-0003-1517-468X and Newton, MI ORCID: https://orcid.org/0000-0003-4231-1002, 2004. Topography driven spreading. Physical Review Letters, 93 (3): 036102. ISSN 0031-9007

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Abstract

Roughening a hydrophobic surface enhances its non-wetting properties into superhydrophobicity. For liquids other than water, roughness can induce a complete roll-up of a droplet. However, topographic effects can also enhance partial wetting by a given liquid into complete wetting to create super-wetting. In this work, a model system of spreading droplets of a non-volatile liquid on surfaces having lithographically produced pillars is used to show that super-wetting also modifies the dynamics of spreading. The edge speed-dynamic contact angle relation is shown to obey a simple power-law and such power laws are shown to apply to naturally occurring surfaces.

Item Type:	Journal article
Description:	Post-print
Publication Title:	Physical Review Letters
Creators:	McHale, G., Shirtcliffe, N.J., Aqil, S., Perry, C.C. and Newton, M.I.
Publisher:	American Physical Society
Place of Publication:	College Park, Md.
Date:	2004
Volume:	93
Number:	3
ISSN:	0031-9007
Identifiers:	Number Type 10.1103/PhysRevLett.93.036102 DOI
Rights:	Copyright ©2004 The American Physical Society
Divisions:	Schools > School of Science and Technology
Record created by:	EPrints Services
Date Added:	09 Oct 2015 10:52
Last Modified:	12 Aug 2022 09:22
URI:	https://irep.ntu.ac.uk/id/eprint/19450

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