Journal
OPTICS COMMUNICATIONS
Volume 382, Issue -, Pages 151-156Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2016.07.075
Keywords
Metamaterials; Metamaterial absorbers; Magnetic field vortex
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Funding
- ICT R&D program of the Ministry of Science, ICT and Future Planning (MSIP)/IITP, Korea [13-911-01-101]
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In the general metamaterial absorber, the single absorption band is made by the single meta-pattern. Here, we introduce the triple-band metamaterial absorber only utilizing single rectangular hole. We also demonstrate the absorption mechanism of the triple absorption. The first absorption peak was caused by the fundamental magnetic resonance in the metallic part between rectangular holes. The second absorption was generated by induced tornado magnetic field. The process of realizing the second band is also presented. The third absorption was induced by the third-harmonic magnetic resonance in the metallic region between rectangular holes. In addition, the visible-range triple-band absorber was also realized by using similar but smaller single rectangular-hole structure. These results render the simple metamaterials for high frequency in large scale, which can be useful in the fabrication of metamaterials operating in the optical range. (C) 2016 Elsevier B.V. All rights reserved.
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