Spectral effectiveness of engineered thermal cloaks in the frequency regime

David Petiteau; Sebastien Guenneau; Michel Bellieud; Myriam Zerrad; Claude Amra

doi:10.1038/srep07386

Spectral effectiveness of engineered thermal cloaks in the frequency regime

David Petiteau, Sebastien Guenneau, Michel Bellieud, Myriam Zerrad, Claude Amra

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

We analyse basic thermal cloaks designed via different geometric transforms applied to thermal cloaking. We evaluate quantitatively the effectiveness of these heterogeneous anisotropic thermal cloaks through the calculation of the standard deviation of the isotherms. The study addresses the frequency regime and we point out the cloak's spectral effectiveness. We find that all these cloaks have comparable effectiveness irrespective of whether or not they have singular conductivity at their inner boundary. However, approximate cloaking with multi-layered cloak critically depends upon the homogenization algorithm and it is shown that the standard deviation varies linearly with the inverse of the number of layers.

Original language	English
Article number	7386
Journal	Scientific Reports
Volume	4
DOIs	https://doi.org/10.1038/srep07386
State	Published - 9 Dec 2014
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2014 Macmillan Publishers Limited. All rights reserved.

Funding

We acknowledge the support of the Direction Générale de l’Armement (DGA) and funding from ANR through INPACT project.

Funders	Funder number
Agence Nationale de la Recherche
Direction Générale de l’Armement

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Spectral effectiveness of engineered thermal cloaks in the frequency regime

Abstract

Bibliographical note

Funding

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