Numerical investigation of graphene-based efficient and broadband metasurface for terahertz solar absorber

Jadeja, Rajendrasinh; Charola, Shreyas; Patel, Shobhit K.; Parmar, Juveriya; Ladumor, Mayurkumar; Nguyen, Truong Khang; Dhasarathan, Vigneswaran

doi:10.1007/s10853-019-04269-y

Cited by 60 publications

(25 citation statements)

References 29 publications

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“…Therefore, the electromagnetic shielding effectiveness (EMI SE) could be written in dB as follow [16,34,35]: Because of the obvious SPPs in the THz band [30], graphene had been widely studied for THz protection [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54]. However, the atomic monolayer graphene is almost transparent to THz wave, so the overall intrinsic absorption of monolayer graphene is highly limited [14,15].…”

Section: Thz Shieldingmentioning

confidence: 99%

Recent progress in two-dimensional materials for terahertz protection

Pan

et al. 2021

Nanoscale Adv.

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Section: Thz Shieldingmentioning

confidence: 99%

Recent progress in two-dimensional materials for terahertz protection

Pan

et al. 2021

Nanoscale Adv.

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“…For a substantial variation in metamaterials operating frequency, wavelength free space should remain high in the unit cells (3). This particular characteristic enables metamaterials to be used as antennas (4), waveguides (5), invisibility cloaking (6), absorbers (7,8), and various kinds of sensors (9). The absorber may be defined as an ideal or close to the absorption unit to absorb the entire incident radiation incident.…”

Section: Introductionmentioning

confidence: 99%

“…PCR cell can be calculated by(7) or(8), which can be observed from Fig.4 (b). PCR values of the proposed design are near zero for each TE and TM modes that care destroy the converter's polarization characteristics.…”

mentioning

confidence: 99%

Hexagonal Resonator Loaded Star Shaped Polarization Insensitive Compact Broadband Zero Indexed Nano-Meta Absorber for Optical Region Applications: A Numerical Approach

Samsuzzaman

Hossain

Hoque

et al. 2021

Preprint

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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, which is constructed with a hexagonal shape resonator for the optical region applications. The design consists of a resonator and dielectric layers made with tungsten and quartz (Fused), respectively. The proposed absorbent exhibits average absorption of more than 0.8972 (89.72%) within the visible wavelength of 450-600 nm and almost perfect absorption 0.99 (99%) at 458.54 nm. Based on computational analysis, the proposed absorber can be characterized as Zero Indexed Metamaterial. 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 35° angular stability, which is suitable for solar cell applications, like exploiting solar energy. The proposed structure prototype is designed and simulated by a study of microwave technology numerical computer simulation (CST) tools. Finite integration technique (FIT) and finite element method (FEM) is performed to data analysis in CST software, and HFSS also helps validate the numerical data of the proposed ZIM absorber. The proposed MMA design is appropriate for substantial amounts of absorption, wide-angle stability, absolute invisible layers, magnetic resonance imaging (MRI), color images, and thermal imaging applications.

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“…Recently, different structure of the active tunable filters has been analyzed by various researchers. Several application‐specific filters have been designed by many researchers such as visible filter, tunable refractive index, plasmonics nonlinearity, polarization‐sensitive, telecommunication application, far infrared filter, DNA detection, and recognition, fiber grating, surface‐emitting lasers, and light manipulation and storage 5‐13 . The gold material is inserted in graphene silicon grating to improve its performance 14 .…”

Section: Introductionmentioning

confidence: 99%

“…Several application-specific filters have been designed by many researchers such as visible filter, tunable refractive index, plasmonics nonlinearity, polarization-sensitive, telecommunication application, far infrared filter, DNA detection, and recognition, fiber grating, surface-emitting lasers, and light manipulation and storage. [5][6][7][8][9][10][11][12][13] The gold material is inserted in graphene silicon grating to improve its performance. 14 From observing the prior works, it is clear that tunable grating structure is an important element for many large THz systems.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of tunable multistacked metamaterial‐based graphene grating

Parmar

Patel

Ahmed

et al. 2020

Micro & Optical Tech Letters

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We present a tunable multistacked metamaterial‐based graphene grating structure for the lower THz frequency range. Circular gold wire is placed between graphene layers to obtain wideband response. Reflectance, transmittance, absorption, and refractive index parameters are analyzed for metamaterial‐based graphene grating structure. The results show wideband reflectance response ranging from 1 to 2.5 THz frequency. Reflectance in grating can be controlled by different chemical potentials of the graphene sheet. The design results are also analyzed for different incident angles ranging from 0° to 80°. The proposed grating structure has the wideband tunable reflectance response and is envisioned to become basic building blocks of several THz systems which is going to be applicable in circulator, sensor, and imaging applications.

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Numerical investigation of graphene-based efficient and broadband metasurface for terahertz solar absorber

Cited by 60 publications

References 29 publications

Recent progress in two-dimensional materials for terahertz protection

Recent progress in two-dimensional materials for terahertz protection

Hexagonal Resonator Loaded Star Shaped Polarization Insensitive Compact Broadband Zero Indexed Nano-Meta Absorber for Optical Region Applications: A Numerical Approach

Numerical investigation of tunable multistacked metamaterial‐based graphene grating

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