Broadband metamaterials and metasurfaces: a review from the perspectives of materials and devices

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Metamaterials can possess extraordinary properties not readily available in nature. While most of the early metamaterials had narrow frequency bandwidth of operation, many recent works have focused on how to implement exotic properties and functions over broad bandwidth for practical applications. Here, we provide two definitions of broadband operation in terms of effective material properties and device functionality, suitable for describing materials and devices, respectively, and overview existing broadband metamaterial designs in such two categories. Broadband metamaterials with nearly constant effective material properties are discussed in the materials part, and broadband absorbers, lens, and hologram devices based on metamaterials and metasurfaces are discussed in the devices part.
Publisher
WALTER DE GRUYTER GMBH
Issue Date
2020-09
Language
English
Article Type
Review
Citation

NANOPHOTONICS, v.9, no.10, pp.3165 - 3196

ISSN
2192-8606
DOI
10.1515/nanoph-2020-0111
URI
http://hdl.handle.net/10203/276066
Appears in Collection
MS-Journal Papers(저널논문)
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