Superamphiphobic Surface by Nanotransfer Molding and Isotropic Etching

We present a novel method of fabricating superhydrophobic and superoleophobic surfaces with nanoscale reentrant curvature by nanotransfer molding and controlled wet etching of the facile undercut. This method produces completely ordered re-entrant nanostructures and prevents capillary-induced bundli...

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Bibliographic Details
Published in:Langmuir 2013-06, Vol.29 (25), p.8070-8075
Main Authors: Lee, Sang Eon, Kim, Han-Jung, Lee, Su-Han, Choi, Dae-Geun
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Hydrophobic and Hydrophilic Interactions
Nanostructures - chemistry
Solid-liquid interface
Surface physical chemistry
Surface Properties
Wettability
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Description
Summary:We present a novel method of fabricating superhydrophobic and superoleophobic surfaces with nanoscale reentrant curvature by nanotransfer molding and controlled wet etching of the facile undercut. This method produces completely ordered re-entrant nanostructures and prevents capillary-induced bundling effects. The mushroom-like, re-entrant, overhanging structure demonstrates superhydrophobic and superoleophobic characteristics, as tested by water droplet bouncing and contact angle measurements, and has high transparency on a flexible substrate. Widespread use as self-cleaning surfaces is expected in the near future.
ISSN:0743-7463
1520-5827
DOI:10.1021/la4011086