Metamaterial-based wideband electromagnetic wave absorber

La Spada, Luigi; Vegni, Lucio

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.

Citation

La Spada, L., & Vegni, L. (2016). Metamaterial-based wideband electromagnetic wave absorber. Optics express, 24(6), 5763. https://doi.org/10.1364/oe.24.005763

• Journal Article Type: Article
• Acceptance Date: Feb 1, 2016
• Online Publication Date: Mar 7, 2016
• Publication Date: Mar 21, 2016
• Deposit Date: Nov 21, 2018
• Publicly Available Date: Nov 22, 2018
• Journal: Optics Express
• Print ISSN: 1094-4087
• Publisher: Optical Society of America
• Peer Reviewed: Peer Reviewed
• Volume: 24
• Issue: 6
• Pages: 5763
• DOI: https://doi.org/10.1364/oe.24.005763
• Keywords: Electromagnetic absorber, Epsilon-Near-Zero materials,
• Public URL: http://researchrepository.napier.ac.uk/Output/1374600
• Contract Date: Nov 22, 2018