Theory of metasurface based perfect absorbers. (17th November 2017)

• Record Type: Journal Article
• Authors: Alaee, Rasoul; Albooyeh, Mohammad; Rockstuhl, Carsten
• Is Part Of: Journal of physics. Volume 50:Number 50(2017)
• Publication Date: 2017-11-17
• Subjects: perfect metamaterial absorbers -- maximum absorption -- electrically/magnetically resonant metasurface; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/aa94a8
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: 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.