A Review of Metamaterial-Based Microwave Absorbers and Sensors

Ranjan, Shashi Kumar; Sahoo, Swagatadeb

doi:10.1007/s11664-023-10809-9

Cited by 5 publications

(1 citation statement)

References 119 publications

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“…Since Landy et al initially introduced the concept of nearly perfect absorbers in 2008 [ 1 ], there has been a growing interest in exploring these absorbers over the past decade. This heightened interest is largely due to their significant relevance in various fields such as solar cells [ 2 ], sensors [ 3 , 4 ], and numerous other applications [ 3 , 4 , 5 ]. The advancements in metamaterial absorbers have primarily followed distinct trends tailored to specific applications.…”

Section: Introductionmentioning

confidence: 99%

Development and Fabrication of a Multi-Layer Planar Solar Light Absorber Achieving High Absorptivity and Ultra-Wideband Response from Visible Light to Infrared

Yang,

Wang,

et al. 2024

Nanomaterials

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The objective of this study is to create a planar solar light absorber that exhibits exceptional absorption characteristics spanning from visible light to infrared across an ultra-wide spectral range. The eight layered structures of the absorber, from top to bottom, consisted of Al2O3, Ti, Al2O3, Ti, Al2O3, Ni, Al2O3, and Al. The COMSOL Multiphysics® simulation software (version 6.0) was utilized to construct the absorber model and perform simulation analyses. The first significant finding of this study is that as compared to absorbers featuring seven-layered structures (excluding the top Al2O3 layer) or using TiO2 or SiO2 layers as substituted for Al2O3 layer, the presence of the top Al2O3 layer demonstrated superior anti-reflection properties. Another noteworthy finding was that the top Al2O3 layer provided better impedance matching compared to scenarios where it was absent or replaced with TiO2 or SiO2 layers, enhancing the absorber’s overall efficiency. Consequently, across the ultra-wideband spectrum spanning 350 to 1970 nm, the average absorptivity reached an impressive 96.76%. One significant novelty of this study was the utilization of various top-layer materials to assess the absorption and reflection spectra, along with the optical-impedance-matching properties of the designed absorber. Another notable contribution was the successful implementation of evaporation techniques for depositing and manufacturing this optimized absorber. A further innovation involved the use of transmission electron microscopy to observe the thickness of each deposition layer. Subsequently, the simulated and calculated absorption spectra of solar energy across the AM1.5 spectrum for both the designed and fabricated absorbers were compared, demonstrating a match between the measured and simulated results.

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Section: Introductionmentioning

confidence: 99%

Development and Fabrication of a Multi-Layer Planar Solar Light Absorber Achieving High Absorptivity and Ultra-Wideband Response from Visible Light to Infrared

Yang,

Wang,

et al. 2024

Nanomaterials

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Six band metamaterial absorber designed on twisted square and swastika-shaped resonator for S, C, X, and Ku band frequency and sensing applications

Ranjan,

Sahoo

2024

Phys. Scr.

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A twisted square split ring and swastika resonator (TSSRSR) based six-band polarization-insensitive metamaterial absorber (MMA) with high effective medium ratio (EMR) and excellent absorption is proposed in this study. It can be utilized as an S, C, X, and Ku band frequency absorber and as a sensor at 6.38 GHz (C band). A swastika geometry-based unique patch has been introduced in the proposed unit cell to achieve high polarization insensitive properties with excellent absorption of 90%, 96.5%, 91.7%, 90.7%, 95.6%, and 91.7% respectively under S, C, X, and Ku band frequency spectrum. The distinctive features of this proposed TSSRSR unit cellare its simple, unique structure with a high EMR value of 8.06, and polarization-insensitive up to 90◦ at 3.72, 6.38, 10.76, 15.28, 18.84, and 21.08 GHz respectively. The designed MMA unit cell is fabricated on a loss FR-4 dielectric substrate with an electrical dimension of 0.124λ0 ×0.124λ0 ×0.157λ0. The angular insensitive properties of the unit cell were also investigated for a maximum angle of 90◦for TE and TM mode. Moreover, the unit cell and array structure performance exhibits a maximum absorption of >90%, suitable for sensing and antenna systems. The simulated outcome is verified by experiment with excellent accordance. The suggested MMA is very attractive for refractive index sensing applications due to several features, including its low profile, excellent angular stability, polarization insensitivity, sensitivity, quality factor (Q), figure of merit (FOM), and EMR value.

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De-Embedding Technique for Parameter Extraction of Biaxial Bianisotropic Metamaterial Slabs

Cem Hasar,

Kaya,

Korkmaz

et al. 2024

IEEE Access

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A Review of Metamaterial-Based Microwave Absorbers and Sensors

Cited by 5 publications

References 119 publications

Development and Fabrication of a Multi-Layer Planar Solar Light Absorber Achieving High Absorptivity and Ultra-Wideband Response from Visible Light to Infrared

Development and Fabrication of a Multi-Layer Planar Solar Light Absorber Achieving High Absorptivity and Ultra-Wideband Response from Visible Light to Infrared

Six band metamaterial absorber designed on twisted square and swastika-shaped resonator for S, C, X, and Ku band frequency and sensing applications

De-Embedding Technique for Parameter Extraction of Biaxial Bianisotropic Metamaterial Slabs

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