Spectral effectiveness of engineered thermal cloaks in the frequency regime

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

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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 languageEnglish
Article number7386
JournalScientific Reports
Volume4
DOIs
StatePublished - 9 Dec 2014
Externally publishedYes

Bibliographical note

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© 2014 Macmillan Publishers Limited. All rights reserved.

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