J-G Fan et al 2004 Nanotechnology 15 501 doi:10.1088/0957-4484/15/5/017
J-G Fan, X-J Tang and Y-P Zhao
Show affiliationsThe equilibrium water contact angles of vertically aligned nanorod Si films were measured by the sessile drop method. For as-deposited hydrophilic films, there was a contact angle transition from a rough surface to a 'hemi-wicking' porous surface at normal film thickness d = 500 nm; while for the HF treated hydrophobic films, a transition from a partially composite to a composite surface was observed at the same film thickness. The observed results can be reasonably interpreted within the framework of the classical Young theory.
68.55.-a Thin film structure and morphology
68.35.B- Structure of clean surfaces (and surface reconstruction)
81.07.-b Nanoscale materials and structures: fabrication and characterization
Soft matter, liquids and polymers
Issue 5 (May 2004)
Received 22 August 2003, in final form 5 January 2004
Published 9 February 2004
J-G Fan et al 2004 Nanotechnology 15 501
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