Title

Infrared Surface Waves On Semiconductor And Conducting Polymer

Keywords

Biosensor; Conducting polymer; Gratings; Infrared; Semiconductors; Surface plasmons

Abstract

Conductors with infrared plasma frequencies are potentially useful hosts of surface electromagnetic waves with subwavelength 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. © 2010 SPIE.

Publication Date

9-19-2011

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

8024

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.884090

Socpus ID

80052726129 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80052726129

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