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Applied Physics Letters / Volume 92 / Issue 10 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 92, 103106 (2008); http://dx.doi.org/10.1063/1.2890433 (3 pages)

Tuning coherent radiative thermal conductance in multilayer photonic crystals

Wah Tung Lau1, Jung-Tsung Shen1, Georgios Veronis1, Shanhui Fan1, 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

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(Received 1 January 2008; accepted 11 February 2008; published online 10 March 2008)

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

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KEYWORDS and PACS

Keywords

energy gap, multilayers, photonic crystals, thermal conductivity

PACS

  • 66.70.-f

    Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves

  • 68.65.Ac

    Multilayers

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2890433

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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    A. N. Cleland, D. R. Schmidt, and C. S. Yung, Phys. Rev. B 64, 172301 (2001).

    D. R. Schmidt, R. J. Schoelkopf, and A. N. Cleland, Phys. Rev. Lett. 93, 045901 (2004).


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