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Extreme resistance of superhydrophobic surfaces to impalement: reversible electrowetting related to the impacting/bouncing drop test
Citation
Brunet, P and Lapierre, F and Thomy, V and Coffinier, Y and Boukherroub, R, Extreme resistance of superhydrophobic surfaces to impalement: reversible electrowetting related to the impacting/bouncing drop test, Langmuir, 24, (19) pp. 11203-11208. ISSN 0743-7463 (2008) [Refereed Article]
Copyright Statement
Copyright 2008 American Chemical Society
Abstract
The paper reports on the comparison of the wetting properties of superhydrophobic silicon nanowires (NWs), using drop impact impalement and electrowetting (EW) experiments. A correlation between the resistance to impalement on both EW and drop impact is shown. From the results, it is evident that when increasing the length and density of NWs (i) the thresholds for drop impact and EW irreversibility increase and (ii) the contact-angle hysteresis after impalement decreases. This suggests that the structure of the NW network could allow for partial impalement, hence preserving the reversibility, and that EW acts the same way as an external pressure. The most robust of our surfaces shows a threshold to impalement higher than 35 kPa, while most of the superhydrophobic surfaces tested so far have impalement thresholds smaller than 10 kPa.
Item Details
Item Type: | Refereed Article |
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Research Division: | Engineering |
Research Group: | Fluid mechanics and thermal engineering |
Research Field: | Fluid mechanics and thermal engineering not elsewhere classified |
Objective Division: | Manufacturing |
Objective Group: | Instrumentation |
Objective Field: | Scientific instruments |
UTAS Author: | Lapierre, F (Dr Florian Lapierre) |
ID Code: | 100004 |
Year Published: | 2008 |
Web of Science® Times Cited: | 78 |
Deposited By: | Austn Centre for Research in Separation Science |
Deposited On: | 2015-04-22 |
Last Modified: | 2015-08-19 |
Downloads: | 0 |
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