Design of a Dual-band Terahertz Planar Double-Negative Metamaterial with Near Zero Refractive Index Property

Mishu, Sumaia Jahan; Moushi, Refat Ara Karim; Dhar, Nipa; Rahman, Muhammad Asad

doi:10.1109/icsct53883.2021.9642664

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…However, such a structure requires special materials like VO 2 , and the performance of the structure deteriorates at room temperature. The work of [14,31] demands the fabrication of vertically standing structures that are complicated to fabricate. Zhang et al [32] depicted dual band NRI response in the THz range with a SiO 2 substrate.…”

Section: Resultsmentioning

confidence: 99%

Realization of Broadband Negative Refractive Index in Terahertz Band by Multilayer Fishnet Metamaterial Approach

Kalel¹,

Wang²

2023

PIER C

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In the present study, a broad negative refractive index (NRI) performance is achieved in the terahertz frequency range (0.6-0.9 THz) through the design of multi-layered fishnet metamaterial (FMM). Herein, the conventional fishnet structure is modified by smoothing the sharp corners to reduce the electric field concentration and improve NRI. At corner radius, r = 30 µm, an effective refractive index of −11.14 is achieved with lower electric field concentration at the corners. A multilayer structure of up to 40 layers is studied to achieve a broad NRI frequency response. The frequency band of NRI response is improved from 0.034 THz for a single layer structure to 0.178 THz for 28 layer structure, almost 6 times the original bandwidth. With the increase in the number of layers, the improvement in NRI and Figure of Merit (FOM) is observed, and maximum NRI and FOM values of −87.5 and 12.67 are achieved at 28 layers. This multilayer broadband design can surpass tunable response of available electro-optic materials. With an optimal combination of NRI and FOM, the presented multilayer approach can achieve a low-loss, broadband performance.

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Section: Resultsmentioning

confidence: 99%

Realization of Broadband Negative Refractive Index in Terahertz Band by Multilayer Fishnet Metamaterial Approach

Kalel¹,

Wang²

2023

PIER C

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“…We proposed the sample of the structure of the suggested metamaterial absorber illustrated schematically in Fig. 1 to create a perfect absorber with a basic structure studied in earlier works [43] , [44] . Fig.…”

Section: Structure and Designmentioning

confidence: 99%

Highly sensitive refractive index sensing with a dual-band optically transparent ITO-based perfect metamaterial absorber for biomedical applications

Mishu,

Rahman,

Dhar

2024

Heliyon

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Performance Analysis of a Semi-Transparent Copper Based Negative Index Metamaterial Arrays

Mishu

Moushi

Dhar

et al. 2022

2022 International Conference on Advancement in Electrical and Electronic Engineering (ICAEEE)

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Design of a Dual-band Terahertz Planar Double-Negative Metamaterial with Near Zero Refractive Index Property

Cited by 3 publications

References 24 publications

Realization of Broadband Negative Refractive Index in Terahertz Band by Multilayer Fishnet Metamaterial Approach

Realization of Broadband Negative Refractive Index in Terahertz Band by Multilayer Fishnet Metamaterial Approach

Highly sensitive refractive index sensing with a dual-band optically transparent ITO-based perfect metamaterial absorber for biomedical applications

Performance Analysis of a Semi-Transparent Copper Based Negative Index Metamaterial Arrays

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