Metamaterial-based wideband electromagnetic wave absorber

Luigi La Spada; Lucio Vegni

doi:10.1364/OE.24.005763

Metamaterial-based wideband electromagnetic wave absorber

Luigi La Spada, Lucio Vegni

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

85 Downloads (Pure)

Abstract

In this paper, an analytical and numerical study of a new type of electromagnetic absorber, operating in the infrared and optical regime, is proposed. Absorption is obtained by exploiting Epsilon-Near-Zero materials. The structure electromagnetic properties are analytically described by using a new closed-form formula. In this way, it is possible to correlate the electromagnetic absorption properties of the structure with its geometrical characteristics. Good agreement between analytical and numerical results was achieved. Moreover, an absorption in a wide angle range (0°-80°), for different resonant frequencies (multi-band) with a large frequency bandwidth (wideband) for small structure thicknesses (d = λp/4) is obtained.

Original language	English
Pages (from-to)	5763-5772
Number of pages	10
Journal	Optics Express
Volume	24
Issue number	6
Early online date	7 Mar 2016
DOIs	https://doi.org/10.1364/OE.24.005763
Publication status	Published - 21 Mar 2016
Externally published	Yes

Bibliographical note

© [2016 Optical Society of America]. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved

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abstract = "In this paper, an analytical and numerical study of a new type of electromagnetic absorber, operating in the infrared and optical regime, is proposed. Absorption is obtained by exploiting Epsilon-Near-Zero materials. The structure electromagnetic properties are analytically described by using a new closed-form formula. In this way, it is possible to correlate the electromagnetic absorption properties of the structure with its geometrical characteristics. Good agreement between analytical and numerical results was achieved. Moreover, an absorption in a wide angle range (0°-80°), for different resonant frequencies (multi-band) with a large frequency bandwidth (wideband) for small structure thicknesses (d = λp/4) is obtained.",

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