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Enhancing far-field thermal emission with thermal extraction

Author

Listed:
  • Zongfu Yu

    (Stanford University)

  • Nicholas P. Sergeant

    (Stanford University)

  • Torbjørn Skauli

    (Stanford University
    Norwegian Defence Research Establishment)

  • Gang Zhang

    (Peking University
    Institute of High Performance Computing)

  • Hailiang Wang

    (Stanford University)

  • Shanhui Fan

    (Stanford University)

Abstract

The control of thermal radiation is of great current importance for applications such as energy conversions and radiative cooling. Here we show theoretically that the thermal emission of a finite-size blackbody emitter can be enhanced in a thermal extraction scheme, where one places the emitter in optical contact with an extraction device consisting of a transparent object, as long as both the emitter and the extraction device have an internal density of state higher than vacuum, and the extraction device has an area larger than the emitter and moreover has a geometry that enables light extraction. As an experimental demonstration of the thermal extraction scheme, we observe a four-fold enhancement of the far-field thermal emission of a carbon-black emitter having an emissivity of 0.85.

Suggested Citation

  • Zongfu Yu & Nicholas P. Sergeant & Torbjørn Skauli & Gang Zhang & Hailiang Wang & Shanhui Fan, 2013. "Enhancing far-field thermal emission with thermal extraction," Nature Communications, Nature, vol. 4(1), pages 1-7, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2765
    DOI: 10.1038/ncomms2765
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    Cited by:

    1. J. Enrique Vázquez-Lozano & Iñigo Liberal, 2023. "Incandescent temporal metamaterials," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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