Simple metamaterial structure enabling triple-band perfect absorber

Title
Simple metamaterial structure enabling triple-band perfect absorber
Author
이영백
Keywords
metamaterial; perfect absorber; electromagnetically-induced transparency; symmetry breaking
Issue Date
2015-08
Publisher
IOP PUBLISHING LTD
Citation
JOURNAL OF PHYSICS D-APPLIED PHYSICS, v. 48, NO 37, Page. 375103-375109
Abstract
Two resonators in metamaterial usually correspond only to two absorption peaks. In this report, by breaking the symmetry, we could create multi-fundamental resonances at GHz frequencies in both simulation and experiment. First, a dual-band metamaterial absorber (MA) was achieved for 4.6 and 10.6 GHz. Next, by modifying the relative position of inner square, the triple-band MA was obtained with enhanced absorption properties. In addition, dependence on the polarization of the incident electromagnetic (EM) wave was clarified. The mechanism is elucidated to be an alteration of the coupling strength, which is made by changing the geometrical configuration of the inner square and the outer ring. It is shown that our structural configuration can be applied to the fields where the interaction with a wide range of EM waves exists or is needed.
URI
http://iopscience.iop.org/article/10.1088/0022-3727/48/37/375103/metahttp://hdl.handle.net/20.500.11754/26843
ISSN
0022-3727; 1361-6463
DOI
10.1088/0022-3727/48/37/375103
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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