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Metamaterial perfect absorber with unabated size-independent absorption

Release time:2019-08-08

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Affiliation of Author(s):UESTC

Journal:Optics express

Indexed by:Applied Research

Volume:26

Issue:16

Page Number:20471-20480

Translation or Not:no

Date of Publication:2018-08-06

Metamaterial absorbers open a new door for the design of optical harvesting devices ranging from the microwave to optical regimes. The top resonator in these structures is critical for the function of metamaterial absorbers. The resonant frequency, bandwidth, and maximum absorption mainly depend on the choice of material, shape, and size of the top resonator. The maximum absorption is generally impaired as the size of the resonator changes, due to the high sensitivity of impedance matching with the medium. In this paper, we experimentally demonstrate a metamaterial perfect absorber with unabat

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