Size Effects in the Electrical Resistivity of Benzene-Derived Carbon Fibers.

Abstract

Tahar and others in the Dresselhaus group previously reported a size effect in the electrical resistivity of benzene-derived carbon fibers with small diameters. A simple theory indicates that the resistivity has a linear dependence on the reciprocal diameter associated with boundary scattering together with a constant term due to a size-independent scattering process. The observed results are well represented by this relation if the diameter is large enough, while for samples with small diameter, the observed resistivity data are considerably smaller than the theoretical expectation. This discrepancy is removed by considering the correct boundary conditions and by solving the Boltzmann equation. Keywords: Carbon fibers, Size effect of carbon fibers, Electrical resistivity of carbon fibers.

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Document Details

Document Type
Technical Report
Publication Date
Oct 30, 1987
Accession Number
ADA191708

Entities

People

  • Kōkichi Sugihara
  • M. S. Dresselhaus

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Boundaries
  • Carbon Fibers
  • Diameters
  • Equations
  • Fibers
  • Graphitic Materials
  • Materials
  • Mean Free Path
  • Plastic Explosives
  • Scattering

Readers

  • Calculus or Mathematical Analysis
  • Optical Fiber Sensing and Electromagnetic Propagation.
  • Superconducting Magnet Technology