期刊
APPLIED PHYSICS EXPRESS
卷 8, 期 10, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.7567/APEX.8.102001
关键词
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资金
- Chinese Natural Science Foundation [61107049, 61275043]
- Open Fund of Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology [MN201505, MN201406]
- Shenzhen Kexin Ju funds [JCYJ20140828163633988]
- Natural Science Foundation of SZU [201456]
We investigated a multiband metamaterial absorber composed of one-side open cavities. A metallic sidewall effectively prevents destructive coupling between the neighboring cavities. Thus, the number of subunits in one period, which determines the number of multibands or the width of broadband, can be greatly increased. A redshift effect of the resonances is observed theoretically and numerically when the distance between the subunits is reduced. Although the separation is very small and the coupling between the neighboring cavities is strong, the angular insensitivity of the absorption is well-maintained over a wide range. Our findings may enable applications of ultra-compact multiband sensors and thermal emitters. (C) 2015 The Japan Society of Applied Physics
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