Experimental evidence of total absorption by a thin absorbing layer deposited on a patterned metallic surface
Abstract
This work presents the experimental demonstration of total absorption by a metal-dielectric metasurface. Following the theoretical proposal [A. D\'iaz-Rubio et al. Phys. Rev. B 89, 245123 (2014)], we fabricated a metasurface consisting of a low absorbing dielectric layer (made of FR4) deposited on top of a metallic surface patterned with a square distribution of coaxial cavities. For P-polarized waves, it is observed a low frequency peak with perfect absorption. The behavior of this peak has been experimentally characterized for different dielectric layer thicknesses, coaxial cavity lengths and incidence angles. The experimental results are in excellent agreement with numerical simulation and support the previous theoretical findings.
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Cite
@article{arxiv.1412.7411,
title = {Experimental evidence of total absorption by a thin absorbing layer deposited on a patterned metallic surface},
author = {Ana Díaz-Rubio and Alastair Hibbins and Jorge Carbonell and José Sánchez-Dehesa},
journal= {arXiv preprint arXiv:1412.7411},
year = {2015}
}
Comments
5 figures