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Proceedings Paper

Infrared surface waves on semiconductor and conducting polymer
Author(s): Monas Shahzad; Gautam Medhi; R. E. Peale; Ryuichi Tsuchikawa; Masahiro Ishigami; Walter Buchwald; Justin Cleary; Glenn D. Boreman; Oliver Edwards; D. J. Diaz; Ted A. Gorman
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Paper Abstract

Conductors with infrared plasma frequencies are potentially useful hosts of surface electromagnetic waves with sub-wavelength mode confinement for sensing applications. Such materials include semimetals, semiconductors, and conducting polymers. In this paper we present experimental and theoretical investigations of surface waves on doped silicon and the conducting polymer polyaniline (PANI). Resonant absorption features were measured in reflection from lamellar gratings made from doped silicon for various p-polarized CO2 laser wavelengths. The angular reflectance spectra for doped silicon was calculated and compared with the experiments using experimental complex permittivities determined from infrared (IR) ellipsometry data. Polyaniline films were prepared, optical constants determined, and resonance spectra calculated also. A specific goal is to identify a conductor having tight mode confinement, sharp reflectivity resonances, and capability to be functionalized for biosensor applications.

Paper Details

Date Published: 26 May 2011
PDF: 8 pages
Proc. SPIE 8024, Advanced Environmental, Chemical, and Biological Sensing Technologies VIII, 80240B (26 May 2011); doi: 10.1117/12.884090
Show Author Affiliations
Monas Shahzad, Univ. of Central Florida (United States)
Gautam Medhi, Univ. of Central Florida (United States)
R. E. Peale, Univ. of Central Florida (United States)
Ryuichi Tsuchikawa, Univ. of Central Florida (United States)
Masahiro Ishigami, Univ. of Central Florida (United States)
Walter Buchwald, Air Force Research Lab. (United States)
Justin Cleary, Air Force Research Lab. (United States)
Glenn D. Boreman, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Oliver Edwards, Zyberwear, Inc. (United States)
D. J. Diaz, Univ. of Central Florida (United States)
Ted A. Gorman, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 8024:
Advanced Environmental, Chemical, and Biological Sensing Technologies VIII
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)

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