Design of broadband metamaterial near-perfect absorbers in visible region based on stacked metal-dielectric gratings

Mao, Qianjun; Feng, Chunzao; Yang, Yizhi; Tan, Yonghong

doi:10.1088/2053-1591/aac86b

Cited by 11 publications

(3 citation statements)

References 44 publications

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“…The first one is different sized resonators placed into a single large unit-cell (Khuyen, 2018; Jafari, 2019). The second one is using multiple vertically stacked metal-dielectric layers into a single unit-cell (Mao, 2018; Wang, 2019). The third method is a combination of the first and second method (Liu, 2016).…”

Section: Introductionmentioning

confidence: 99%

Optically transparent terahertz triple-band and dual-band metamaterial absorber

Elakkiya

Sankararajan

Sreeja

2021

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Purpose The proposed metamaterial absorber (MMA) has the following advantages: first, the structure of the MMA consists of one planar metallic resonator, which presents a new design approach to obtain a multiband absorption response, rather than using multiple unit-cells in the one large unit cell or stacking different layers. Second, the simultaneous realization of triple-band and dual-band absorption (or bi-functional absorption) at five different frequencies can integrate the respective advantages of the triple functions of the triple-band MMA and double-band MMA, and therefore, the bi-functional MMA will find more application prospects than multiple-functional devices of triple-band and dual-band. Third, the authors simulated the three combinations of MMA here, which is indium tin oxide (ITO)-Polyimide-ITO, ITO-Teflon-ITO and ITO-polyethylene terephthalate (PET)-ITO for the same planar structure and achieve a high absorption rate. Finally, the proposed structure is polarization and angle independent in nature. Design/methodology/approach This absorption device consists of the top circular resonator, the middle insulating SiO2 medium layer and the bottom metallic copper ground plane placed on a substrate. The conductivity of the copper metal is s = 5.8 × 107 s/m. As the transmission of the MMA structure is zero, the substrate materials can be selected randomly. Totally four combinations of terahertz MMA are designed and simulated here which are ITO- SiO2 –ITO, ITO-Polyimide-ITO, ITO-Teflon-ITO and ITO- PET-ITO for the same planar structure. Findings Compared with previous MMAs, the proposed MMA has the following advantages: First, the structure of the MMA consists of one planar metallic resonator, which presents a new design approach to obtain a multiband absorption response, rather than using multiple unit-cells in the one large unit cell or stacking different layers. Second, the simultaneous realization of triple-band and dual-band absorption (or bi-functional absorption) at five different frequencies can integrate the respective advantages of the triple functions of the triple-band MMA and double-band MMA, and therefore, the bi-functional MMA will find more application prospects than multiple-functional devices of triple-band and dual-band. Third, the authors simulated the three combinations of MMA here, which is ITO-polyimide-ITO, ITO-Teflon-ITO and ITO- PET-ITO for the same planar structure and achieve a high absorption rate. Finally, the proposed structure is polarization and angle independent in nature. Originality/value First, the structure of the MMA consists of one planar metallic resonator, which presents a new design approach to obtain a multiband absorption response, rather than using multiple unit-cells in the one large unit cell or stacking different layers. Second, the simultaneous realization of triple-band and dual-band absorption (or bi-functional absorption) at five different frequencies can integrate the respective advantages of the triple functions of the triple-band MMA and double-band MMA, and therefore, the bi-functional MMA will find more application prospects than multiple-functional devices of triple-band and dual-band. Third, the authors simulated the three combinations of MMA here, which is ITO-polyimide-ITO, ITO-Teflon-ITO and ITO-PET-ITO for the same planar structure and achieve a high absorption rate. Finally, the proposed structure is polarization and angle independent in nature.

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Section: Introductionmentioning

confidence: 99%

Optically transparent terahertz triple-band and dual-band metamaterial absorber

Elakkiya

Sankararajan

Sreeja

2021

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“…(b) integrate several different sizes of metallic elements into a stacked structure [15][16][17][18]; and (c) use the combination methods of the (a) and (b) [19,20]. Although these methods can achieve excellent performance of the MAs, the starting point of these designs is the same, which combines several different frequencies of single-band absorption peaks, each of which resonance peak corresponds to a certain length of metallic element.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous realization of the single-band and broadband terahertz perfect absorber using one piece of metamaterial resonator

Wang

Tang

et al. 2020

SN Appl. Sci.

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A kind of terahertz metamaterial absorber, made of only an Au closed-ring resonator and a dielectric layer deposited on a continuous Au film, is presented to achieve bifunctional absorption characteristic. Unlike traditional absorbers having the single-functional absorption features of single-band or broadband, the designed device exhibits not only the single-band absorption response at frequency of 1.45 THz, but also a broadband absorption performance, which is caused by the superposition of three adjacent frequencies that are all localized at right side of the single-band absorption. Importantly, the relative absorption bandwidth of the broadband performance of the device over absorption rates of 50% and 80% can, respectively, reach 47.22% and 35.97%, which is very close to (and even exceed) the performance of previous single function of broadband absorbers that require several different lengths of metallic elements. The designed bifunctional absorber has the comprehensive advantages of the single functions of the single-band and broadband absorbers, and therefore, this work can offer an inspiring method to obtain a bifunctional absorber through using only one piece of metamaterial.

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“…The present paper is concerned with a special type of metamaterial, which has the form of a semiconductor structure on which a grating was lithographically fabricated either by etching of the surface or by evaporation of a metal. Metamaterials of this type were recently studied in a number of papers [12][13][14][15][16][17][18]. A distinguishing feature of the samples studied is the presence of a two-dimensional electron gas (2DEG) of a very high mobility of electrons at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Polarization of Magnetoplasmons in Grating Metamaterials Based on CdTe/CdMgTe Quantum Wells

et al. 2020

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Grating metamaterials were fabricated with electron beam lithography on CdTe/CdMgTe modulation doped structures with two non-interacting quantum wells. Two types of samples were studied: with etched gratings and with gratings formed by deposition of Au stripes. The polarization properties at THz frequencies of the gratings were determined at room temperature. It was shown that Au gratings formed a linear polarizer, while etched gratings did not polarize THz radiation. Transmission of circularly polarized THz radiation at low temperatures through a sample with no grating showed a strongly circularly polarized cyclotron resonance transition. Transmission of this radiation through a sample with an etched grating showed a magnetoplasmon transition that was almost perfectly linearly polarized. We concluded that magnetoplasmons in metamaterials with etched gratings are linearly polarized excitations, possibly with a small contribution of a circular component. This work opens the possibility of the detailed study of the polarization of magnetoplasmons, which has not been explored in the past.

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Design of broadband metamaterial near-perfect absorbers in visible region based on stacked metal-dielectric gratings

Cited by 11 publications

References 44 publications

Optically transparent terahertz triple-band and dual-band metamaterial absorber

Optically transparent terahertz triple-band and dual-band metamaterial absorber

Simultaneous realization of the single-band and broadband terahertz perfect absorber using one piece of metamaterial resonator

Polarization of Magnetoplasmons in Grating Metamaterials Based on CdTe/CdMgTe Quantum Wells

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