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Langmuir. 2007 Apr 10;23(8):4310-4. Epub 2007 Mar 20.

Design and fabrication of micro-textures for inducing a superhydrophobic behavior on hydrophilic materials.

Author information

1
Department of Chemical and Petroleum Engineering, Department of Mechanical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA.

Abstract

Artificial superhydrophobic surfaces are typically fabricated by tuning the surface roughness of intrinsically hydrophobic surfaces. We report here the design and fabrication of micro-textures for inducing a superhydrophobic behavior on hydrogen-terminated Si surfaces with an intrinsic water contact angle of approximately 74 degrees . The micro-textures consist of overhang structures with well-defined geometries fabricated by microfabrication technologies, which provide positions to support the liquid and prevent the liquid from entering into the indents between the micro-textures. As a result, water is in contact with a composite surface of solid and air, which induces the observed macroscopic superhydrophobic behavior.

PMID:
17371061
DOI:
10.1021/la063572r
[Indexed for MEDLINE]

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