A reinterpretation of the metamaterial perfect absorber

Abstract

We develop a simple treatment of a metamaterial perfect absorber (MPA) based on grating theory. We analytically prove that the condition of MPA requires the existence of two currents, which are nearly out of phase and have almost identical amplitude, akin to a magnetic dipole. Furthermore, we show that non-zero-order Bragg modes within the MPA may consume electromagnetic energy significantly.

7 pages, 2 figures. It is an updated version with new title

References in corpus (3)

• A Perfect Metamaterial Absorber
• A metamaterial absorber for the terahertz regime: Design, fabrication and characterization
• Application of metasurface description for multilayered metamaterials and an alternative theory for metamaterial perfect absorber

Cited by in corpus (1)

• A Circuit-based Model for the Interpretation of Perfect Metamaterial Absorbers