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Interference theory of metamaterial perfect absorbers

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Chen, Hou-Tong·2012·Optics Express

Abstract

The impedance matching to free space in metamaterial perfect absorbers has been believed to involve and rely on magnetic resonant response, with direct evidence provided by the anti-parallel surface currents in the metal structures. Here I present a different theoretical interpretation based on interference, which shows that the two layers of metal structures in metamaterial absorbers are linked only by multiple reflections with negligible near-field interactions or magnetic resonances. This is further supported by the out-of-phase surface currents derived at the interfaces of resonator array and ground plane through multiple reflections and superpositions. The theory developed here explains all features observed in narrowband metamaterial absorbers and therefore provides a profound understanding of the underlying physics.

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Research works printed but not linked: 17

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Metadata

Authors
Chen, H.-T.
Venue
Optics Express
Published
2012-03-14
Volume
20
Issue
7
Pages
7165
ISSN
1094-4087 (ISSN-L)
OpenAlex
W2107054522
Cited by
954
References
0
FWCI
17.12
Type
journal article
Language
en
Open access
gold
Licence

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Chen, H.-T. (2012). Interference theory of metamaterial perfect absorbers. Optics Express. https://doi.org/10.1364/oe.20.007165

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