Article

Synthesis of perpendicular nanorod arrays with hierarchical architecture and water slipping superhydrophobic properties

Department of Chemistry, BK21 School of Chemical Materials Science and SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, South Korea.
Langmuir (Impact Factor: 4.38). 05/2008; 24(8):4168-73. DOI: 10.1021/la7026972
Source: PubMed

ABSTRACT The utilization of vertically aligned smooth gold nanorod arrays with and without nanoporous tip architectures as superhydrophobic surfaces is described. Nanoporous architecture was produced on the tips of nanorods by selectively dissolving less noble components from the alloy nanorods. The resulting nanoscopic dual-size roughness features enhanced the surface dewettability after surface modification with low-surface-energy materials such as long-chain normal alkanethiols and fluorinated organic compounds. The surface cleaning properties were also tested with a rolling water droplet.

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