20 March 2013 Nano-microstructured, superhydrophobic, and infrared transparent polytetrafluoroethylene/diamond films
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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.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Flavio Horowitz, Lívia E. V. S. Brandão, Kelly C. Camargo, Alexandre F. Michels, Naira M. Balzarettia, "Nano-microstructured, superhydrophobic, and infrared transparent polytetrafluoroethylene/diamond films," Journal of Nanophotonics 7(1), 073596 (20 March 2013). https://doi.org/10.1117/1.JNP.7.073596
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