Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 50, Issue 50, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/aa94a8
Keywords
perfect metamaterial absorbers; maximum absorption; electrically/magnetically resonant metasurface
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Funding
- Max Planck Society
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Based on an analytic approach, we present a theoretical review on the absorption, scattering, and extinction of both dipole scatterers and regular arrays composed of such scatterers i.e. metasurfaces. Besides offering a tutorial by outlining the maximum absorption limit for electrically/magnetically resonant dipole particles/metasurfaces, we give an educative analytical approach to their analysis. Moreover, we put forward the analysis of two known alternatives in providing perfect absorbers out of electrically and or magnetically resonant metasurfaces; one is based on the simultaneous presence of both electric and magnetic responses in so called Huygens metasurfaces while the other is established upon the presence of a back reflector in so called Salisbury absorbers. Our work is supported by several numerical examples to clarify the discussions in each stage.
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