Perfect and broad absorption by the active control of electric resonance in metamaterial

Title
Perfect and broad absorption by the active control of electric resonance in metamaterial
Authors
이영백
Keywords
electric resonance; perfect absorber; multi-plasma; metamaterial
Issue Date
2015-03
Publisher
IOP PUBLISHING LTD
Citation
JOURNAL OF OPTICS, v. 17, Page. 45105-45109
Abstract
Anti-oscillating plasmas have been the key to perfect absorption induced by magnetic resonance. This is an achievement in recent research on metamaterials (MMs), especially in GHz and the lower-frequency regions of electromagnetic waves. Here, a comprehensive view of perfect absorption is introduced by means of both magnetic resonance and electric resonance in meta molecules. A conventional metal-dielectric-metal MM absorber is proposed to obtain dual-band perfect absorption. It is clarified that the mechanism of dual-band absorption is due to fundamental (at 7.2 GHz) and third-order (at 18.7 GHz) magnetic resonances. Finally, we develop triple-band absorption by integrating resistors in to the MM absorber. The electric resonance, under the presence of resistors, matches the impedance of the MM absorber with the air at 13 GHz and gives rise to the new absorption band, with absorption higher than 90%.
URI
http://iopscience.iop.org/article/10.1088/2040-8978/17/4/045105/metahttp://hdl.handle.net/20.500.11754/22679
ISSN
2040-8978; 2040-8986
DOI
http://dx.doi.org/10.1088/2040-8978/17/4/045105
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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