期刊
APPLIED PHYSICS LETTERS
卷 102, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4794173
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资金
- NRF fund by MEST, Korea [2011-0017605, 2010-0025306, 2012K1A2 B2A07033424]
- ICT Standardization program of KCC
- MEST
- PAL, Korea
- Korea Communications Agency (KCA) [2013-PK10-13] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2011-0017605, 2010-0025306] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We numerically and experimentally investigated dual-band absorption of sandwich-structure metamaterials which include periodic metal coupled rings at the front separated from the metal plane at the back by a dielectric layer. The properties are demonstrated in both GHz and mid-IR regimes of electromagnetic ( EM) wave. The dual-band perfect absorber with polarization independence is observed under normal incidence. In order to understand the EM properties of dual-band perfect absorber, the plasmonic excitation was clarified for both peaks. Finally, by connecting the rings, the perfect-absorption peaks can be controlled with the polarization angle of incident EM wave. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794173]
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