Electromagnetic Characterization of Carbon Nanotube Films Subject to an Oxidative Treatment at Elevated Temperature (Preprint)

Abstract

Electromagnetic characterization of carbon nanotube (CNT) films fabricated by thermal decomposition of silicon carbide (SiC) has been performed. Purification and/or uncapping treatment conditions at an elevated temperature of 400 deg C under flowing oxygen or carbon dioxide have been studied. A near field microwave microscope was used to measure the real and imaginary parts of the complex permittivity of CNT films through the frequency shift and the change in reciprocal quality factor between two extreme positions of an evanescent microwave probe-tip (in contact with the sample, and away from interaction with it). A theoretical two-point model was proposed to confirm experimental data, which showed poor conductivity of the CNT film as grown but has slight improvement after 40-minute treatment.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2010
Accession Number
ADA527683

Entities

People

  • Angela L. Campbell
  • Gregory Kozlowski
  • John J. Boeckl
  • Kineshma Munbodh
  • Krzysztof K. Koziol
  • Richard A. Kleismit
  • Timothy L. Peterson

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Carbon Dioxide
  • Carbon Nanotubes
  • Chemical Vapor Deposition
  • Electromagnetic Fields
  • Experimental Data
  • Fermi Levels
  • Frequency Shift
  • Fullerenes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Microscopes
  • Nanotechnology
  • Silicon Carbide

Fields of Study

  • Materials science

Readers

  • Microwave Engineering.
  • Nanocomposite Materials Science
  • Thin Film Deposition Science.