Design and fabrication of superhydrophobic surfaces formed of microcavities

被引：10

作者：

Salvadori, M. C. ^{[1
]}

Cattani, M. ^{[1
]}

Oliveira, M. R. S. ^{[2
]}

Teixeira, F. S. ^{[2
]}

Brown, I. G. ^{[3
]}

机构：

[1] Univ Sao Paulo, Inst Phys, BR-05315970 Sao Paulo, Brazil

[2] Univ Sao Paulo, Polytech Sch, BR-05508900 Sao Paulo, Brazil

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 07期

基金：

巴西圣保罗研究基金会;

关键词：

contact angle; hydrophobicity; microcavities; microfabrication; surface morphology; LOTUS;

D O I：

10.1063/1.3327836

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 degrees, in agreement with predictions of the model.

引用

页数：3

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