Scaling Theory Applied to Far Infrared Absorption by Metal-Insulator Composite Materials

Abstract

Dynamic scaling theory is used to obtain expressions for the far infrared absorption coefficient alpha of metal-insulator granular composite materials near the dc percolation threshold pc in the quasistatic limit. Anomalous frequency dependence is predicted near pc for 50 angstrom radius Au particles. The frequency dependence of alpha obtained from an analysis of published data on Au blacks is inconsistent with the scaling theory for Drude Au particles in the three dimensional limit.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1989
Accession Number
ADA234279

Entities

People

  • R. P. Devaty

Organizations

  • University of Pittsburgh

Tags

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Advanced Materials
  • Coefficients
  • Composite Materials
  • Dielectrics
  • Eddy Currents
  • Engineered Materials
  • Equations
  • Frequency
  • Materials
  • New York
  • Optical Properties
  • Particles
  • Physics
  • Three Dimensional
  • Transitions

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Spectroscopy.

Technology Areas

  • Microelectronics