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Near-Field Thermal Emission of Thin Films

[+] Author Affiliations
Jérémie Drevillon, Philippe Ben-Abdallah

CNRS/UMR, Nantes, France

Paper No. MNHT2008-52110, pp. 1219-1223; 5 pages
doi:10.1115/MNHT2008-52110
From:
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer, Parts A and B
  • Tainan, Taiwan, June 6–9, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4292-4 | eISBN: 0-7918-3813-7
  • Copyright © 2008 by ASME

abstract

While the far-field thermal emission of thin film have been described in detail during the last five years [1–2], surprisingly, no systematic study on their near-field emission has been carried out so far. In this work we present an exact calculation of the local density of state of the non-radiative part of electromagnetic field close to the surface of thin metallic films. We describe the specific near-field properties of bounded structures. In particular it is found that this density closely depends on the thickness of films and can be significantly greater than that of near-field at the same distance from a semi-infinite medium. These results should have important consequences in the design of planar near-field thermal sources.

Copyright © 2008 by ASME
Topics: Thin films , Emissions

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