Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15968
Title: Superhydrophobicity of polytetrafluoroethylene thin film fabricated by pulsed laser deposition
Authors: Kwong, HY
Wong, MH
Wong, YW
Wong, KH
Keywords: PLD
PTFE
Superhydrophobic
Issue Date: 2007
Publisher: North-Holland
Source: Applied surface science, 2007, v. 253, no. 22, p. 8841-8845 How to cite?
Journal: Applied surface science 
Abstract: Superhydrophobic polytetrafluoroethylene (PTFE) thin films were obtained by pulsed laser deposition (PLD) technique carried out with KrF excimer laser (λ = 248 nm) of about 1 J/cm2 at a pressure of 1.33 Pa. The samples exhibit high water contact angle of about 170° and the sliding angle smaller than 2°. From studying the surface morphology of the prepared films, it is believed that the nano-scale surface roughness has enhanced the hydrophobic property of the PTFE. The increase of trapping air and reducing liquid-solid contact area due to the rough surface, as suggested by the Cassie-Baxter's model, should be responsible for superhydrophobicity of the PLD prepared films. This study thus provides a convenient one-step method without using wet-process to produce a superhydrophobic surface with good self-cleaning properties.
URI: http://hdl.handle.net/10397/15968
ISSN: 0169-4332
EISSN: 1873-5584
DOI: 10.1016/j.apsusc.2007.04.036
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