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Proceedings Paper

Infrared surface plasmon polariton on polyaniline-graphite composite
Author(s): Monas Shahzad; Gautam Medhi; Doug Maukonen; Mehmet Yesiltas; R. E. Peale; Walter R. Buchwald; Justin Cleary; Yi Liao; Candace Alber; Valentine K. Johns; Rahul Hegishte; Glen D. Boreman
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Paper Abstract

Conducting polymers are potentially useful materials in sensor applications. Polyaniline is one of the most promising of these materials due to high conductivity and plasma frequencies as high as the mid-infrared. The application of this material is still limited because of low conductivity. In this paper, we chemically prepared a composite of co-doped polyaniline with hydrochloric acid and MSA (methane sulfonic acid) in aqueous solution with both colloidal and nano-graphite. Solutions of the composite material were prepared in m-cresol and NMP (N-mthyle-2-pyrrolidone), which are common organic solvents. This approach resulted in material with conductivity higher than either intrinsic polyaniline or graphite alone. The solution of the composite was spin coated on suitable substrates. The thicknesses of the films were measured using atomic force microscope (AFM). Fourier transform infrared spectra (FTIR) and micro-Raman spectra were collected to confirm the composition and determine the infrared thickness. Surface plasmon resonances for grating patterns of this composite material were calculated using experimental determined infrared (IR) ellipsometry data. The goal is to identify a material which has potential application for surface plasmons resonance sensing with high sensitivity and selectivity in IR range.

Paper Details

Date Published: 9 May 2012
PDF: 6 pages
Proc. SPIE 8366, Advanced Environmental, Chemical, and Biological Sensing Technologies IX, 836604 (9 May 2012); doi: 10.1117/12.919195
Show Author Affiliations
Monas Shahzad, Univ. of Central Florida (United States)
Gautam Medhi, Univ. of Central Florida (United States)
Doug Maukonen, Univ. of Central Florida (United States)
Mehmet Yesiltas, Univ. of Central Florida (United States)
R. E. Peale, Univ. of Central Florida (United States)
Walter R. Buchwald, Solid State Scientific Corp. (United States)
Justin Cleary, Air Force Research Lab. (United States)
Yi Liao, Univ. of Central Florida (United States)
Candace Alber, Univ. of Central Florida (United States)
Valentine K. Johns, Univ. of Central Florida (United States)
Rahul Hegishte, Univ. of Central Florida (United States)
Glen D. Boreman, The Univ. of North Carolina at Charlotte (United States)


Published in SPIE Proceedings Vol. 8366:
Advanced Environmental, Chemical, and Biological Sensing Technologies IX
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)

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