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Journal of Nanophotonics

Nano-microstructured, superhydrophobic, and infrared transparent polytetrafluoroethylene/diamond films
Author(s): Flavio Horowitz; Lívia E. V. S. Brandão; Kelly C. Camargo; Alexandre F. Michels; Naira M. Balzarettia
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Paper Abstract

A self-assembled polytetrafluoroethylene (PTFE) nanostructure is deposited on microcrystalline diamond (MCD) films, by use of physical and chemical vapor deposition in a two-step process, to produce (fully) superhydrophobic surfaces: high water contact angle (static, 165±2  deg ), very low hysteresis (dynamic, ∼4  deg ), and associated sliding angle (1 deg 5 ′ ±15 ′ ), thus combining the diamond infrared transparency and self-cleaning properties. These are interpreted in light of Wenzel and Cassie-Baxter wetting models, associated with structural microscopy of nano-micro rough PTFE/MCD surfaces, and present a promising perspective for self-cleaning infrared optics applications.

Paper Details

Date Published: 20 March 2013
PDF: 7 pages
J. Nanophoton. 7(1) 073596 doi: 10.1117/1.JNP.7.073596
Published in: Journal of Nanophotonics Volume 7, Issue 1
Show Author Affiliations
Flavio Horowitz, Univ. Federal do Rio Grande do Sul (Brazil)
Lívia E. V. S. Brandão, Univ. Federal do Rio Grande do Sul (Brazil)
Kelly C. Camargo, Univ. Federal do Rio Grande do Sul (Brazil)
Alexandre F. Michels, Univ. Federal do Rio Grande do Sul (Brazil)
Naira M. Balzarettia, Univ. Federal do Rio Grande do Sul (Brazil)

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