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Tuning coherent radiative thermal conductance in multilayer photonic crystals

Appl. Phys. Lett. 92, 103106 (2008); doi:10.1063/1.2890433

Published 10 March 2008

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Wah Tung Lau,1 Jung-Tsung Shen,1 Georgios Veronis,1 Shanhui Fan,1 and Paul V. Braun2
1Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
2Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
We consider coherent radiative thermal conductance of a multilayer photonic crystal. The crystal consists of alternating layers of lossless dielectric slabs and vacuum, where heat is conducted only through photons. We show that such a structure can have thermal conductance below vacuum over the entire high temperature range due to the presence of partial band gap in most of the frequency range, as well as the suppression of evanescent tunneling between slabs at higher frequencies. The thermal conductance of this structure is highly tunable by varying the thickness of the vacuum layers. ©2008 American Institute of Physics
History: Received 1 January 2008; accepted 11 February 2008; published 10 March 2008
Permalink: http://link.aip.org/link/?APPLAB/92/103106/1
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KEYWORDS and PACS

Keywords
PACS
  • 66.70.-f
    Nonelectronic thermal conduction and heat-pulse propagation in solids
  • 68.65.Ac
    Multilayers (structure and nonelectronic properties)
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (11)
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