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15 Feb 2010

Volume 96, Issue 7, Articles (07xxxx)

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Appl. Phys. Lett. 96, 072501 (2010); http://dx.doi.org/10.1063/1.3314301 (3 pages)

T. Hesjedal and T. Phung
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Design and fabrication of superhydrophobic surfaces formed of microcavities

M. C. Salvadori, M. Cattani, M. R. S. Oliveira, F. S. Teixeira, and I. G. Brown

Appl. Phys. Lett. 96, 074101 (2010); http://dx.doi.org/10.1063/1.3327836 (3 pages) | Cited 4 times

Online Publication Date: 19 February 2010

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We have developed a theoretical model for superhydrophobic surfaces that are formed from an extended array of microcavities, and have fabricated specific microcavity patterns to form superhydrophobic surfaces of the kind modeled. The model shows that the cavity aspect ratio can be significantly less than unity, indicating that the microcavities do not need to be deep in order to enhance the superhydrophobic character of the surface. We have fabricated surfaces of this kind and measured advancing contact angle as high as 153°, in agreement with predictions of the model.
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68.35.B- Structure of clean surfaces (and surface reconstruction)
68.08.Bc Wetting
68.03.Cd Surface tension and related phenomena
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