Theoretical Study of Plasmonically Induced Transparency Effect in Arrays of Graphene-Based Double Disk Resonators

Portela, Gianni; Dmitriev, Victor; Oliveira, Cristiano Braga de; Castro, Wagner

doi:10.1590/2179-10742019v18i11634

Cited by 4 publications

(4 citation statements)

References 18 publications

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“…An analytical TCMT description of the discussed device (see Figure 1B) is based on the following equation 4,22 :

\frac{d}{dt}{a}_{m}=\left(j{\omega }_{m}-\frac{1}{{\tau }_{i,m}}-\frac{1}{{\tau }_{w,m}}\right){a}_{m}-j{\mu }_{m}{S}_{i},

…”

Section: Theoretical Analysismentioning

confidence: 99%

“…An analytical TCMT description of the discussed device (see Figure 1B) is based on the following equation 4,22 :…”

Section: Theoretical Analysismentioning

confidence: 99%

“…Since 2004, when researchers managed to isolate and characterize a sheet of graphene, 1 which is a two-dimensional (2D) material 2 with a thickness of one carbon atom, many works on graphene nanophotonic devices were published, among them filters, 3,4 optical switches, 5 photodetectors, 6 sensors, 7 absorbers, 8 just to name a few. One of the effects of this great investment in research and applications was the search for obtaining other 2D materials.…”

Section: Introductionmentioning

confidence: 99%

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Tunable dual‐band filter based on monolayer black phosphorus

Oliveira

Dmitriev

Melo

et al. 2022

Micro & Optical Tech Letters

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We propose analytical and numerical modeling of a tunable electromagnetic dual‐band filter based on a periodic structure of black phosphorus (BP) discs deposited on silicon dioxide for operating in terahertz and infrared regions. Due to BP anisotropy, single operation dipole mode bands for polarization of incident wave in the armchair or zigzag directions exist. These bands correspond to different resonant frequencies. However, for another polarization, in particular, for a 4 5 ∘ $4{5}^{\circ }$ polarization, a double operation band appears. The dynamic control of the proposed structure can be performed by varying the electronic doping of the BP, thus changing the operating frequency of the filter. The analytical model based on the temporal coupled‐mode theory is in good agreement with the numerical simulations by COMSOL Multiphysics.

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“…An analytical TCMT description of the discussed device (see Figure 1B) is based on the following equation 4,22 :

\frac{d}{dt}{a}_{m}=\left(j{\omega }_{m}-\frac{1}{{\tau }_{i,m}}-\frac{1}{{\tau }_{w,m}}\right){a}_{m}-j{\mu }_{m}{S}_{i},

…”

Section: Theoretical Analysismentioning

confidence: 99%

“…An analytical TCMT description of the discussed device (see Figure 1B) is based on the following equation 4,22 :…”

Section: Theoretical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tunable dual‐band filter based on monolayer black phosphorus

Oliveira

Dmitriev

Melo

et al. 2022

Micro & Optical Tech Letters

Self Cite

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“…k spp is surface plasmons wave vector and Zc is the characteristic impedance of the graphene sheet Undeniably, a standout among the most exciting properties of graphene is the ability to control the complex conductivity, which results in frequency tunability. This should be effortless by applying an external gate (electrostatic) bias to manipulate the graphene field-effect [68], when the voltage is applied vertically to the graphene sample [69]. The external bias applied onto the graphene injects more electrons and holes, consequently altering the chemical potential of graphene and resulting in frequency tunability, as depicted in Figure 2.…”

Section: Surface Plasmon Resonance and Gate Tuning Of Graphene Conducmentioning

confidence: 99%

A Review on the Development of Tunable Graphene Nanoantennas for Terahertz Optoelectronic and Plasmonic Applications

Ullah

Witjaksono

Nawi

et al. 2020

Sensors

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Exceptional advancement has been made in the development of graphene optical nanoantennas. They are incorporated with optoelectronic devices for plasmonics application and have been an active research area across the globe. The interest in graphene plasmonic devices is driven by the different applications they have empowered, such as ultrafast nanodevices, photodetection, energy harvesting, biosensing, biomedical imaging and high-speed terahertz communications. In this article, the aim is to provide a detailed review of the essential explanation behind graphene nanoantennas experimental proofs for the developments of graphene-based plasmonics antennas, achieving enhanced light–matter interaction by exploiting graphene material conductivity and optical properties. First, the fundamental graphene nanoantennas and their tunable resonant behavior over THz frequencies are summarized. Furthermore, incorporating graphene–metal hybrid antennas with optoelectronic devices can prompt the acknowledgment of multi-platforms for photonics. More interestingly, various technical methods are critically studied for frequency tuning and active modulation of optical characteristics, through in situ modulations by applying an external electric field. Second, the various methods for radiation beam scanning and beam reconfigurability are discussed through reflectarray and leaky-wave graphene antennas. In particular, numerous graphene antenna photodetectors and graphene rectennas for energy harvesting are studied by giving a critical evaluation of antenna performances, enhanced photodetection, energy conversion efficiency and the significant problems that remain to be addressed. Finally, the potential developments in the synthesis of graphene material and technological methods involved in the fabrication of graphene–metal nanoantennas are discussed.

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