期刊
APPLIED PHYSICS LETTERS
卷 110, 期 10, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4977860
关键词
-
资金
- National Natural Science Foundation of China [61425023, 61575177, 61235007]
We propose a broadband, efficient, ultra-thin metal-insulator-metal (MIM) absorber with a simple single-sized disk configuration by utilizing metals with high imaginary part of permittivity (epsilon). The physics behind this is that field dissipation is remarkably enhanced in MIM absorbers with high-epsilon metals, significantly extending the absorption bandwidths, which are conventionally limited by magnetic resonances of MIM absorbers with low-epsilon metals. The experimentally demonstrated MIM absorber based on tungsten with high-epsilon yields broadband absorption from visible to near-infrared range (400-1700 nm) with an average measured absorption of 84%. The ultra-thin and single-sized nanostructure with broadband efficient absorption facilitates the scalability to largearea photonic applications. Published by AIP Publishing.
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