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Design ab-initio de matériaux micro et nanostructurés pour l'émission thermique cohérente en champ proche et en champ lointain

Abstract : Emission of thermal light from a hot body has been considered during long time as broadband and quasi-isotropic. Today we know this paradigm is wrong and it has been shown that many micro and nanostructured materials are able to radiate in narrow spectral bands and around specific directions of space. The ability to artificially grow in a controllable manner, from modern deposition techniques, complex structural configurations of metallic, polar and dielectric materials raises now the issue of the ‘best' achievable inner structures to tailor the radiative properties of a nanostructured thermal source in a prescribed manner and to enhance the coherence degree of its emission. However, so far, only heuristic strategies based on trial-and-error have been followed for engineering such sources. In this thesis we present a general method for the ab initio design of coherent thermal sources both in far field and near field. The framework of this thesis is the scattering matrix theory and the fluctuational electrodynamic. New near-field effects are theoretically predicted for nanostructured materials. They open new opportunities to significantly improve the performances of new energy conversion technologies.
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https://tel.archives-ouvertes.fr/tel-00250350
Contributor : Jérémie Drevillon <>
Submitted on : Monday, February 11, 2008 - 5:14:17 PM
Last modification on : Tuesday, October 20, 2020 - 9:28:02 AM
Long-term archiving on: : Friday, September 28, 2012 - 9:30:59 AM

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  • HAL Id : tel-00250350, version 1

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Jérémie Drevillon. Design ab-initio de matériaux micro et nanostructurés pour l'émission thermique cohérente en champ proche et en champ lointain. Energie électrique. Université de Nantes, 2007. Français. ⟨tel-00250350⟩

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