Design and parametric analysis of a wide-angle polarization-insensitive metamaterial absorber with a star shape resonator for optical wavelength applications

Mahmud, Sultan; Islam, Sikder Sunbeam; Mat, Kamarulzaman; Chowdhury, Muhammad E. H.; Rmili, Hatem; Islam, Mohammad Tariqul

doi:10.1016/j.rinp.2020.103259

Cited by 63 publications

(22 citation statements)

References 80 publications

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“…The insensitivity of absorption characteristics facing various incident waves is an important parameter due to different polarization and incident angles. Some reported designs show a perfect insensitivity facing different polarization and incident angles for a broad spectrum 49 , 50 . However, having a high Q-factor followed by sharp resonance is crucial for sensing applications.…”

Section: Mpa Simulation Resultsmentioning

confidence: 99%

Soil moisture remote sensing using SIW cavity based metamaterial perfect absorber

Amiri

Shariati

Lipman

2021

Sci Rep

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Continuous and accurate sensing of water content in soil is an essential and useful measure in the agriculture industry. Traditional sensors developed to perform this task suffer from limited lifetime and also need to be calibrated regularly. Further, maintenance, support, and deployment of these sensors in remote environments provide additional challenges to the use of conventional soil moisture sensors. In this paper, a metamaterial perfect absorber (MPA) based soil moisture sensor is introduced. The ability of MPAs to absorb electromagnetic signals with near 100% efficiency facilitates the design of highly accurate and low-profile radio frequency passive sensors. MPA based sensor can be fabricated from highly durable materials and can therefore be made more resilient than traditional sensors. High resolution sensing is achieved through the creation of physical channels in the substrate integrated waveguide (SIW) cavity. The proposed sensor does not require connection for both electromagnetic signals or for adding a testing sample. Importantly, an external power supply is not needed, making the MPA based sensor the perfect solution for remote and passive sensing in modern agriculture. The proposed MPA based sensor has three absorption bands due to the various resonance modes of the SIW cavity. By changing the soil moisture level, the absorption peak shifts by 10 MHz, 23.3 MHz, and 60 MHz, which is correlated with the water content percentage at the first, second and third absorption bands, respectively. Finally, a $$6 \times 6$$ 6 × 6 cell array with a total size of $$312 \,\hbox {mm} \times 312 \,\hbox {mm}$$ 312 mm × 312 mm has been fabricated and tested. A strong correlation between measurement and simulation results validates the design procedure.

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Section: Mpa Simulation Resultsmentioning

confidence: 99%

Soil moisture remote sensing using SIW cavity based metamaterial perfect absorber

Amiri

Shariati

Lipman

2021

Sci Rep

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“…Polarization angle ϕ can change from +π to −π because of four (4) distinct polarity variations. In free space, both perpendicular and parallel polarization in basic waveguide mode (for example, TE 10 ) shows a relationship between the square of wave vector |k| 2 and susceptibility tensor κ of oblique incident wave [34]. The reported article reveals that |k| 2 < κ 2 a real part of ε r and μ r should have the same sign, where the imaginary part will have an opposite sign for perpendicular polarization.…”

Section: Metamaterials Characterization Of the Proposed Absorbermentioning

confidence: 89%

Polarization Insensitive Broadband Zero Indexed Nano-Meta Absorber for Optical Region Applications

Mathias¹,

Dhanalakshmi²,

Kumar³

et al. 2022

Computers, Materials &Amp; Continua

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Broadband response metamaterial absorber (MMA) remains a challenge among researchers. A nanostructured new zero-indexed metamaterial (ZIM) absorber is presented in this study, constructed with a hexagonal shape resonator for optical region applications. The design consists of a resonator and dielectric layers made with tungsten and quartz (Fused). The proposed absorbent exhibits average absorption of more than 0.8972 (89.72%) within the visible wavelength of 450-600 nm and nearly perfect absorption of 0.99 (99%) at 461.61 nm. Based on computational analysis, the proposed absorber can be characterized as ZIM. The developments of ZIM absorbers have demonstrated plasmonic resonance characteristics and a perfect impedance match. The incidence obliquity in typically the range of 0 • -90 • both in TE and TM mode with maximum absorbance is more than 0.8972 (∼89.72%), and up to 45 • angular stability is suitable for solar cell applications, like exploiting solar energy. The proposed structure prototype is designed and simulated by studying microwave technology numerical computer simulation (CST) tools. The finite integration technique (FIT) based simulator CST and finite element method (FEM) based simulator HFSS also helps validate the numerical data of the proposed ZIM absorber. The proposed MMA design is appropriate for substantial absorption, wide-angle stability, absolute invisible layers, magnetic resonance imaging (MRI), color images, and thermal imaging applications.

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“…Because the higher the incident angle, the longer the path length, and the lower the coupling effect has long been known. This reduced coupling effect decreases the structure's electromagnetic dipolar resonance, resulting in less wave confinement in the dielectric layer [59]. But still, the proposed absorber gives a competitive look with a different incident angle.…”

Section: E Incident Angle Stability and Polarization Insensitivitymentioning

confidence: 99%

A Wide-Angle, Enhanced Oblique Incidence, Bend-Able Metamaterial Absorber Employed in Visible Region With a Sun Shape Resonator

et al. 2021

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Solar spectrum is supposed to be a key source of renewable energy in the form of electromagnetic (EM) radiation. For efficiently harnessing this abundant energy, Metamaterial Absorber (MMA) emerges as a game-changing tool. Along with solar energy harvesting, MMA can be used in biochemical sensors, optical modulators, magnetic resonance imaging, photoelectric detectors, plasmonic sensors, etc. In this paper, a sun shape resonator-based MMA is designed with three layers of materials (W-SiO2-W) and analysed for broadband absorption encompassing the entire visible region (390-760nm). The unit cell that is presented in this study is polarization-insensitive and ultrathin with an average absorption of 96.43% with an optimum peak of 99.99% at 523.22nm. The proposed MMA exhibits satisfactory absorption under various oblique angles. The effect of mechanical loading is also investigated and the MMA is found to hold good broadband absorbance for some extents of mechanical bending. Finite Integration Technique (FIT) is used to numerically simulate the proposed MMA unit cell structure and validated with the Finite Element Method (FEM). The suggested MMA in this paper can be used in many optical applications like efficient nano solar cells, imaging applications, sensors, light detectors, biochemical applications, etc.

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Design and parametric analysis of a wide-angle polarization-insensitive metamaterial absorber with a star shape resonator for optical wavelength applications

Cited by 63 publications

References 80 publications

Soil moisture remote sensing using SIW cavity based metamaterial perfect absorber

Soil moisture remote sensing using SIW cavity based metamaterial perfect absorber

Polarization Insensitive Broadband Zero Indexed Nano-Meta Absorber for Optical Region Applications

A Wide-Angle, Enhanced Oblique Incidence, Bend-Able Metamaterial Absorber Employed in Visible Region With a Sun Shape Resonator

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