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Infrared surface waves on semiconductor and conducting polymer

  • 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
  • University of Central Florida
  • Air Force Research Laboratory
  • Zyberwear Inc.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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.

Original languageEnglish
Title of host publicationAdvanced Environmental, Chemical, and Biological Sensing Technologies VIII
DOIs
StatePublished - 2011
EventAdvanced Environmental, Chemical, and Biological Sensing Technologies VIII - Orlando, FL, United States
Duration: Apr 25 2011 → Apr 26 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8024
ISSN (Print)0277-786X

Conference

ConferenceAdvanced Environmental, Chemical, and Biological Sensing Technologies VIII
Country/TerritoryUnited States
CityOrlando, FL
Period4/25/11 → 4/26/11

ASJC Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

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

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