Epsilon-near-zero metamaterials and electromagnetic sources: Tailoring the radiation phase pattern
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Issue Date
2007-04-11Author
Alù, Andrea
Silveirinha, Mário G.
Salandrino, Alessandro
Engheta, Nader
Publisher
American Physical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
©2007 American Physical Society
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Show full item recordAbstract
In this work, we investigate the response of epsilon-near-zero metamaterials and plasmonic materials to electromagnetic source excitation. The use of these media for tailoring the phase of radiation pattern of arbitrary sources is proposed and analyzed numerically and analytically for some canonical geometries. In particular, the possibility of employing planar layers, cylindrical shells, or other more complex shapes made of such materials in order to isolate two regions of space and to tailor the phase pattern in one region, fairly independent of the excitation shape present in the other region, is demonstrated with theoretical arguments and some numerical examples. Physical insights into the phenomenon are also presented and discussed together with potential applications of the phenomenon.
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Citation
Alù, A., Silveirinha, M. G., Salandrino, A., & Engheta, N. (2007). Epsilon-near-zero metamaterials and electromagnetic sources: Tailoring the radiation phase pattern. Physical Review B, 75(15), 155410.
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