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Title
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Ultrawideband fractal metamaterial absorber made of nickel operating in the UV to IR spectrum
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Subject |
metamaterial, Absorber, solar photovoltaics
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Author |
M Ashar Naveed, M Hasan Bilal, M Abuzar Baqir, M M
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Publish Year |
2021 |
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Diss#. |
https://doi.org/10.1364/OE.446423 |
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Text Language |
English |
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Accession |
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Library Section |
Research Article |
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Abstract |
Nano-structure based metamaterial absorbers have been getting enormous interestowing to their widespread applications in solar cells, thermal emitters and integrated photonicdevices. This paper presents a novel and ultrathin broadband metamaterial absorber comprisedof a hexagonal nano-ring shaped fractal structure. The designed fractal metamaterial absorber(FMA) is composed of a three-layer device having a metal-insulator-metal (MIM) configuration.Based on the numerical simulations, the proposed FMA manifests more than 97% absorptivityfor the operating wavelength from 820 to 2520 nm. However, it shows above 80% absorptionvalue for the entire operating wavelength from 200 to 4000 nm. To predict the angular stabilityof this broadband absorption device, the absorptivity was investigated under different obliqueincident angles of the exciting wave by considering both transverse electric (TE)- and transversemagnetic (TM)-polarization. Further, multiple reflection theory was employed to calcu
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