Investigation of graphene based miniaturized terahertz antenna for novel substrate materials

Bala, Rajni; Marwaha, Anupma

doi:10.1016/j.jestch.2015.08.004

Cited by 35 publications

(15 citation statements)

References 18 publications

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“…It is worth noting that increasing chemical potential through gating the single-layer graphene can result in a small change in frequency shift relative to multi-layer graphene. Rajni et al [104] studied the effect of appropriate material on the graphene patch antenna. Various materials have different performances due to their dielectric permittivity, which affects the graphene patch antenna characteristics; to achieve higher bandwidth and radiation efficiency, thicker substrates are preferable.…”

Section: Graphene Resonant Terahertz Antennasmentioning

confidence: 99%

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

Ullah

Witjaksono

Nawi

et al. 2020

Sensors

102

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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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Section: Graphene Resonant Terahertz Antennasmentioning

confidence: 99%

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

Ullah

Witjaksono

Nawi

et al. 2020

Sensors

102

View full text Add to dashboard Cite

show abstract

“…First, the possibility of the applications of graphene and CNT was investigated [106] and the wave performance on a graphene sheet was also studied in [107]. Then, various antennas like graphene patch antenna with different shapes [108]- [110], CNT dipole antenna [106], [111], [112], and so on were proposed. Furthermore, a nanoantenna with the shape of log-periodic tooth made of graphene was proposed in [113] and a novel graphene-based nanoantenna, which exploits the behaviour of Surface Plasmon Polariton waves in semi-finite sized Graphene Nanoribons (GNRs) was proposed in [114].…”

Section: Enabling and Concomitant Technologiesmentioning

confidence: 99%

A Comprehensive Survey on Hybrid Communication in Context of Molecular Communication and Terahertz Communication for Body-Centric Nanonetworks

Yang

Deng

et al. 2020

IEEE Trans. Mol. Biol. Multi-Scale Commun.

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“…They found that aromatic and ionic surfactant interacts with different carbon material, and p-stacking fall within their electron-abundant aromatic cores and conjugated surfaces of the carbon materials [29][30][31]. graphene material has attractive pure multi-physics, electrical [32], mechanical [33], and adsorption properties [34]. The graphene material is also responsible for modifying the charge carrier density and controlling its carrier mobility [35].…”

Section: Introductionmentioning

confidence: 99%

Analysis and comparison of metal-doped on Graphene-Genistein using QM/MM calculations

Alihosseini

Choupani²,

Monajjemi³

et al. 2021

Rev.Fac.Ing.Univ.Antioquia

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Genistein (5,7,4′-trihydroxyisoflavone) is an isoflavone abundantly found in soy and other legumes and acts as a selective estrogen receptor modulator (SERM). When testing for similar abilities among other flavonoids, it has been found to be a strong topoisomerase inhibitor. Similar to some high-dose chemotherapy drugs, it was strongly toxic to normal cells. In this study, the adsorption of genistein on the surface of exclusive graphene and Ni, Ti, Cr, and Se-doped graphene was theoretically evaluated by means of density functional theory calculation. Initially, we varied the position of genistein from the surface of pristine and decorated graphene by changing the distances between (1-5 Å) and gained the Ead and Egap for each situation. Our calculation indicated that adsorption energies (Ead) of pristine genistein to graphene with Ni decorated graphene, Ti- decorated graphene, and Cr-decorated graphene and Se-decorated graphene are: 954.984, 318.168, 797.480, 946.725, 958.154 kcal/mole, respectively, and the calculated values of adsorption energy in the equilibrium distance (de=3.918OA.) of genistein to Ni-decorated graphene reveal that apparently genistein- Ni-decorated graphene as the most energetically favorable position was correctly selected in comparison with other atom -decorated graphene. In consequence, we explain the density of states (Doss) and frontier molecular orbitals HOMO and LUMO for Ni-decorated graphene and complexes with genistein; therefore, data confirmed that a positive charge of Ni-decorated graphene for nucleophile molecules could be achieved.

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Investigation of graphene based miniaturized terahertz antenna for novel substrate materials

Cited by 35 publications

References 18 publications

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

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

A Comprehensive Survey on Hybrid Communication in Context of Molecular Communication and Terahertz Communication for Body-Centric Nanonetworks

Analysis and comparison of metal-doped on Graphene-Genistein using QM/MM calculations

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