Nano Research

, Volume 2, Issue 2, pp 143–150

Superhydrophobic surfaces produced by applying a self-assembled monolayer to silicon micro/nano-textured surfaces

Authors

  • Yong Song
    • Department of Mechanical EngineeringUniversity of Arkansas
  • Rahul Premachandran Nair
    • Department of Mechanical EngineeringUniversity of Arkansas
    • Department of Mechanical EngineeringUniversity of Arkansas
  • Yongqiang Wang
    • Ocean NanoTech, LLC.
Open AccessResearch Article

DOI: 10.1007/s12274-009-9012-0

Cite this article as:
Song, Y., Nair, R.P., Zou, M. et al. Nano Res. (2009) 2: 143. doi:10.1007/s12274-009-9012-0

Abstract

A novel way of producing superhydrophobic surfaces by applying a self-assembled monolayer (SAM) to silicon micro/nano-textured surfaces is presented in this paper. The micro/nano-textured surfaces on silicon substrates were generated by the aluminum-induced crystallization (AIC) of amorphous silicon (a-Si) technique. Octadecyltrichlorosilane (OTS) SAMs were then applied to the textured surfaces by dip coating. The topography and wetting properties of the resulting surfaces were characterized using scanning electron microscopy (SEM) and a video-based contact angle measurement system. The results show that by introducing OTS SAMs on the silicon micro/nano-textured surfaces, superhydrophobic surfaces with water contact angles (WCAs) of 155° were obtained, as compared to the WCAs of OTS-modified smooth silicon surfaces of about 112°. Surface topography was found to directly influence the WCA as predicted by the Cassie-Baxter model.

https://static-content.springer.com/image/art%3A10.1007%2Fs12274-009-9012-0/MediaObjects/12274_2009_9012_Fig1_HTML.jpg

Keywords

Superhydrophobicwetting propertymicro/nano-textured surfacesoctadecyltrichlorosilaneself-assembled monolayeraluminum-induced crystallization of amorphous silicon
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Copyright information

© Tsinghua University Press and Springer Berlin Heidelberg 2009