2014/09/10 by David Petiteau, Sébastien Guenneau, Petiteau, David +7
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Phenomena Research #Electromagnetic Scattering and Analysis #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Metamaterials and Metasurfaces Applications #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1409.2991
13 pages, 7 figures. The results from this article will be presented on a poster at the Metamaterials 2014 Copenhague conference
arxiv created 2014/09/10 · openalex publication_date 2014/09/10 · arxiv updated 2014/09/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We analyse basic thermal cloaks designed via different geometric transforms applied to thermal cloaking. We evaluate quantitatively the efficiency 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 efficiencies. We find that all these cloaks have comparable efficiency 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 a large number of thin layers (at least fifty) is required to reduce substantially the standard deviation of the isotherms.