The Light Absorption Enhancement in Graphene Monolayer Resulting from the Diffraction Coupling of Surface Plasmon Polariton Resonance

Liu, Bo; Yu, Wenjing; Yan, Zhendong; Cai, Peng; Gao, Fan; Tang, Chaojun; Gu, Ping; Liu, Zhengqi; Chen, Jing

doi:10.3390/nano12020216

Cited by 17 publications

(4 citation statements)

References 60 publications

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“…Numerous approaches have been devised and thoroughly investigated to unravel the persistent problem of lower absorption in graphene [4]. Specifically, the enhanced absorption of graphene in the violet [5][6][7], visible [8,9], near-infrared [10,11], and THz [12,13] regions can enable its use in a wider range of applications, including optoelectronics, solar cells, and terahertz imaging.…”

Section: Introductionmentioning

confidence: 99%

Enhanced dual-band absorption of graphene mediated by an aluminum metastructure

Khan¹,

Lü²,

Wang

2023

2D Mater.

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Graphene absorption from the visible to infrared spectrum has great potential and broad applications in the miniature of modern optoelectronic biosensors and photodetectors. However, graphene has zero bandgap energy, which limits its absorption to 2.3% in the visible and infrared spectrums. Here we propose a metastructure to optimize the graphene absorption in the visible to near-infrared frequency regions. The metastructure comprising an array of aluminium (Al) square blocks (Al-SBs) on a graphene layer, a silica spacer, and an Al reflector is investigated for absorption enhancement. This work deciphers the effect of the periodicity of decorated Al-SBs on the evolution of dual-band absorption in single layer graphene under normal incidence. Electromagnetic signatures of two excited modes indicate that surface plasmon and magnetic dipole plasmon are mediators of absorption. The investigation into the impact of geometrical parameters illustrates that the coexisting phenomena of a relative broad peak and a relative sharp peak have been achieved simultaneously with high efficiency. The dynamic manipulation of surface plasmon and magnetic dipole plasmon presents a great potential for a diverse range of applications such as sensing and imaging. By controlling the periodicity of Al-SBs, it is possible to achieve active control of surface plasmon resonance, and a detection range of 300 nm is observed. Dynamic control of the magnetic dipole plasmon successfully achieved by modifying the electrical environment of the graphene layer, which is realized by altering the underlying spacer material. Collectively, findings of this study demonstrate the significant potential of the suggested metastructure for its prospective applications in optoelectronic devices including biosensors, photovoltaics, and photodetectors that rely on the dynamic control of surface and magnetic plasmon resonances.

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Section: Introductionmentioning

confidence: 99%

Enhanced dual-band absorption of graphene mediated by an aluminum metastructure

Khan¹,

Lü²,

Wang

2023

2D Mater.

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“…Recent advances in the heterogeneous integration of layered materials on silicon photonics (SiPh) platforms have been impressive [20], [21], [22], [23], [24], [25], [26], [27]. For instance, graphene demonstrated an extraordinary performance for onchip modulators and photodetectors [28], [29], while it has a universal absorption of ∼2.3% in the visible and near-infrared spectrum [30]. Considering graphene is only 0.34 nm thick; this optical absorption efficiency is remarkable.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Van Der Waals 2D GeAs Integrated on Silicon Four-Waveguide Crossing

Dushaq

Villegas

Paredes

et al. 2023

J. Lightwave Technol.

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In-plane optical anisotropy plays a critical role in manipulating light in a wide range of planner photonic devices. In this study, the strong anisotropy of multilayer 2D GeAs is leveraged and utilized to validate the technical feasibility of on-chip light management. A 2D GeAs is stamped into an ultra-compact silicon waveguide four-way crossing optimized for operation in the Ooptical band. The measured optical transmission spectra indicated a remarkable discrepancy between the in-plane crystal optical axes with an attenuation ratio of ∼3.5 (at 1330 nm). Additionally, the effect of GeAs crystal orientation on the electro-optic transmission performance is demonstrated on a straight waveguide. A notable 50% reduction in responsivity was recorded for devices constructed with cross direction compared to devices with a crystal a-direction parallel to the light polarization. This extraordinary optical anisotropy, combined with a high refractive index ∼4 of 2D GeAs, opens possibilities for efficient on-chip light manipulation in photonic devices.

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“…In addition to energy and industrial applications [ 23 , 24 , 25 , 26 , 27 , 28 ], the benefits/applications of GBNs in photodynamic (PDT), photothermal therapy (PTT), and photothermal antibacterial protection are expected [ 56 , 65 , 66 , 67 ]. These specific optical properties of GBNs, especially absorption of NIR radiation [ 68 , 69 , 70 ], may allow another mode of targeted delivery, via photothermal drug release, and also allow a new targeted therapeutic modality, via photothermal ablation [ 64 ].…”

Section: Introductionmentioning

confidence: 99%

Advances in Biologically Applicable Graphene-Based 2D Nanomaterials

Jampílek

Kráľová

2022

IJMS

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Climate change and increasing contamination of the environment, due to anthropogenic activities, are accompanied with a growing negative impact on human life. Nowadays, humanity is threatened by the increasing incidence of difficult-to-treat cancer and various infectious diseases caused by resistant pathogens, but, on the other hand, ensuring sufficient safe food for balanced human nutrition is threatened by a growing infestation of agriculturally important plants, by various pathogens or by the deteriorating condition of agricultural land. One way to deal with all these undesirable facts is to try to develop technologies and sophisticated materials that could help overcome these negative effects/gloomy prospects. One possibility is to try to use nanotechnology and, within this broad field, to focus also on the study of two-dimensional carbon-based nanomaterials, which have excellent prospects to be used in various economic sectors. In this brief up-to-date overview, attention is paid to recent applications of graphene-based nanomaterials, i.e., graphene, graphene quantum dots, graphene oxide, graphene oxide quantum dots, and reduced graphene oxide. These materials and their various modifications and combinations with other compounds are discussed, regarding their biomedical and agro-ecological applications, i.e., as materials investigated for their antineoplastic and anti-invasive effects, for their effects against various plant pathogens, and as carriers of bioactive agents (drugs, pesticides, fertilizers) as well as materials suitable to be used in theranostics. The negative effects of graphene-based nanomaterials on living organisms, including their mode of action, are analyzed as well.

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The Light Absorption Enhancement in Graphene Monolayer Resulting from the Diffraction Coupling of Surface Plasmon Polariton Resonance

Cited by 17 publications

References 60 publications

Enhanced dual-band absorption of graphene mediated by an aluminum metastructure

Enhanced dual-band absorption of graphene mediated by an aluminum metastructure

Anisotropic Van Der Waals 2D GeAs Integrated on Silicon Four-Waveguide Crossing

Advances in Biologically Applicable Graphene-Based 2D Nanomaterials

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