A discussion on the interpretation and characterization of metafilms/metasurfaces: The two-dimensional equivalent of metamaterials
A metafilm (also referred to as a metasurface) is the surface equivalent of a metamaterial. More precisely, a metafilm is a surface distribution of suitably chosen electrically small scatterers. Metafilms are becoming popular as an alternative to full three-dimensional metamaterials. Unfortunately,...
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| Veröffentlicht in: | Metamaterials 2009-10, Vol.3 (2), p.100-112 |
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| container_end_page | 112 |
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| container_title | Metamaterials |
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| creator | Holloway, Christopher L. Dienstfrey, Andrew Kuester, Edward F. O’Hara, John F. Azad, Abul K. Taylor, Antoinette J. |
| description | A metafilm (also referred to as a metasurface) is the surface equivalent of a metamaterial. More precisely, a metafilm is a surface distribution of suitably chosen electrically small scatterers. Metafilms are becoming popular as an alternative to full three-dimensional metamaterials. Unfortunately, many papers in the literature present incorrect interpretations and mischaracterizations of these metafilms. In fact, some of the characterizations presented in the literature result in non-unique parameters for a uniquely defined metafilm. In this paper we discuss an appropriate interpretation and characterization of metafilms and present a correct manner to characterize a metafilm. Additionally, we illustrate the error that results from an incorrect characterization of metafilms. We present various examples to emphasize these points. Finally we present a retrieval approach for determining the uniquely defined quantities (the electric and magnetic susceptibilities of its constituent scatterers) that characterize a metafilm. |
| doi_str_mv | 10.1016/j.metmat.2009.08.001 |
| format | Article |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Effective media Generalized sheet transition conditions (GSTC) Metafilm Metamaterial Metasurface Polarizability densities Surface susceptibility |
| title | A discussion on the interpretation and characterization of metafilms/metasurfaces: The two-dimensional equivalent of metamaterials |
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