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Hydrophobic Metallic Nanorods coated with Teflon Nanopatches by Glancing Angle Deposition

Published online by Cambridge University Press:  31 January 2011

Wisam J Khudhayer ,
Rajesh Sharma  and
Tansel Karabacak
Wisam J Khudhayer
Affiliation:
[email protected], university of arkansas at little rock, applied science, Applied Science, ETAS 575, 2801 South University Avenue, little rock, Arkansas, 501, United States, 501-569-8050, 501-569-8020
Rajesh Sharma
Affiliation:
[email protected], university of arkansas at little rock, applied science, little rock, Arkansas, United States
Tansel Karabacak
Affiliation:
[email protected], university of arkansas at little rock, applied science, little rock, Arkansas, United States
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Abstract

Introducing a hydrophobic property to vertically aligned hydrophilic metallic nanorods was investigated experimentally and theoretically. First, platinum nanorod arrays were deposited on flat silicon substrates using a sputter Glancing Angle Deposition Technique (GLAD). Then a thin layer of Teflon (nanopatches) was partially deposited on the tips of platinum nanorod at a glancing angle of  = 85° as well as at normal incidence ( = 0°) for different deposition times. We show that GLAD technique is capable of depositing ultrathin isolated Teflon nanopatches on selective regions of nanorod arrays due to the shadowing effect during GLAD. Contact angle measurements on Pt/Teflon nano-composite have shown contact angle values as high as 138°, indicating a significant increase in the hydrophobicity of originally hydrophilic Pt nanostructures. Finally, a 2D simplified wetting model utilizing Cassie and Baxter theory of heterogeneous surfaces has been developed to explain the wetting behavior of Pt/Teflon nanocomposite.

Keywords

nanostructuresputteringcomposite
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1188: Symposium LL – Architectured Multifunctional Materials , 2009 , 1188-LL09-03
Copyright
Copyright © Materials Research Society 2009

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References

1 Ye, D.-X., Lu, T.-M, and Karabacak, T., Physical review letters, PRL 100, pp. 256102, 2008.10.1103/PhysRevLett.100.256102Google Scholar
2 , Satyaprasad, Jain, V., and Nema, S. K., Applied Surface Science, 253, pp. 5462–5466, 2007.10.1016/j.apsusc.2006.12.085Google Scholar
3 Sakar, D. K., Farzaneh, M., and Paynter, R. W., Material Letters, 62, pp. 1226–1229, 2008.10.1016/j.matlet.2007.08.051Google Scholar
4 Biederman, H., Vacuum, 59, pp. 594–599, 2000.10.1016/S0042-207X(00)00321-3Google Scholar
5 Biederman, H., Zeuner, M., Bilkova, J., et al., Thin Solid Films, 392, pp. 208–213, 2001.10.1016/S0040-6090(01)01029-XGoogle Scholar
6 Biederman, H., Stelmashuk, V., Kholodkov, I., et al., Surface Coatings Technology, 174-175, pp. 27–32, 2003.10.1016/S0257-8972(03)00573-5Google Scholar
7 Pursel, S., NNIN REU Research Accomplishments, pp. 104–105, 2004.Google Scholar
8 Bodas, D. S., Mandale, A. B., and Gangal, S. A., Applied Surface Science, 245, pp. 202–207, 2005.10.1016/j.apsusc.2004.10.023Google Scholar
9 Robbie, K., Beydaghyan, G., Brown, T., Dean, C., Adams, J., and Buzea, C., Rev. Sci. Instrum. 75, 1089 (2004).10.1063/1.1667254Google Scholar
10 Karabacak, T. and Lu, T.-M., Handbook of Theoretical and Computational Nanotechnology, edited by Rieth, M. and Schommers, W. (American. Scientific Publishers, Stevenson Ranch, CA, 2005), chap. 69, p. 729.Google Scholar
11 Karabacak, T., Wang, G. C., and Lu, T.-M., J. Vac. Sci. Technol. A 22, 1778 (2004).10.1116/1.1743178Google Scholar
12 Spori, D. M., Drobek, T., Zurcher, S. et al., Langmuir, 24, pp. 5411–5417, 2008.10.1021/la800215rGoogle Scholar