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Infrared Radiative Properties of Submicron Metallic Slit Arrays

[+] Author Affiliations
Y.-B. Chen, B. J. Lee, Z. M. Zhang

Georgia Institute of Technology, Atlanta, GA

Paper No. IMECE2007-41268, pp. 1255-1264; 10 pages
  • ASME 2007 International Mechanical Engineering Congress and Exposition
  • Volume 8: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A and B
  • Seattle, Washington, USA, November 11–15, 2007
  • Conference Sponsors: ASME
  • ISBN: 0-7918-4302-5 | eISBN: 0-7918-3812-9
  • Copyright © 2007 by ASME


Submicron metallic slit arrays with different geometry were designed and fabricated on silicon substrates. Their infrared radiative properties (transmittance, reflectance, and absorptance) were investigated both experimentally and theoretically. The normal transmittance of three fabricated Au slit arrays was measured at wavelengths between 2 and 15 μm using a Fourier-transform infrared spectrometer. The experiment results were compared with the values calculated from the rigorous coupled-wave analysis. The applicability of the effective medium theory for modeling radiative properties was also examined. The agreement between the measurement and modeling results demonstrates the feasibility of quantitative tuning of the radiative properties by employing periodic micro/nanostructures.

Copyright © 2007 by ASME



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