Special Section on Nanostructured Thin Films: Fundamentals and Applications

Nano-microstructured, superhydrophobic, and infrared transparent polytetrafluoroethylene/diamond films

[+] Author Affiliations
Flavio Horowitz

Universidade Federal do Rio Grande do Sul, Laser and Film Optics Laboratory/Physics Institute, Campus do Vale, Porto Alegre, Rio Grande do Sul, 91501-970 Brazil

Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Ciências dos Materiais, Campus do Vale, Porto Alegre, Rio Grande do Sul, 91501-970 Brazil

Lívia E.V.S. Brandão

Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Ciências dos Materiais, Campus do Vale, Porto Alegre, Rio Grande do Sul, 91501-970 Brazil

Kelly C. Camargo

Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Ciências dos Materiais, Campus do Vale, Porto Alegre, Rio Grande do Sul, 91501-970 Brazil

Alexandre F. Michels

Universidade de Caxias do Sul, Centro de Ciencias Exatas, da Natureza e de Tecnologia, Departamento de Engenharia Mecânica, Bloco D, Rua Francisco Getulio Vargas, 1130, Caxias do Sul, Rio Grande do Sul, 95070-560 Brazil

Naira M. Balzaretti

Universidade Federal do Rio Grande do Sul, Laser and Film Optics Laboratory/Physics Institute, Campus do Vale, Porto Alegre, Rio Grande do Sul, 91501-970 Brazil

Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Ciências dos Materiais, Campus do Vale, Porto Alegre, Rio Grande do Sul, 91501-970 Brazil

J. Nanophoton. 7(1), 073596 (Mar 20, 2013). doi:10.1117/1.JNP.7.073596
History: Received January 5, 2013; Revised February 28, 2013; Accepted March 6, 2013
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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±2deg), very low hysteresis (dynamic, 4deg), 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.

Figures in this Article
© 2013 Society of Photo-Optical Instrumentation Engineers

Topics

Diamond ; Water

Citation

Flavio Horowitz ; Lívia E.V.S. Brandão ; Kelly C. Camargo ; Alexandre F. Michels and Naira M. Balzaretti
"Nano-microstructured, superhydrophobic, and infrared transparent polytetrafluoroethylene/diamond films", J. Nanophoton. 7(1), 073596 (Mar 20, 2013). ; http://dx.doi.org/10.1117/1.JNP.7.073596


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