Graphene–bimetal plasmonic platform for ultra-sensitive biosensing

Tong, Jinguang; Jiang, Li; Chen, Huifang; Wang, Yiqin; Yong, Ken‐Tye; Forsberg, Erik; He, Sailing

doi:10.1016/j.optcom.2017.11.039

Cited by 21 publications

(12 citation statements)

References 46 publications

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Section: Optical Biosensors Based On 2d Materialsmentioning

confidence: 99%

“…Both prism-and fiber-coupling are the two most widely used methods in SPR technology. For example, based on prism coupling, Tong et al proposed a novel graphene-bimetallic plasma sensing platform for ultra-high sensitivity phase interrogation in 2017, [97] as shown in Figure 7a. The hybrid structure combining graphene nanosheets and bimetallic films greatly enhances the sensitivity of the SPR sensor.…”

Section: Optical Biosensors Based On Graphenementioning

confidence: 99%

mentioning

confidence: 99%

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2D Material‐Based Optical Biosensor: Status and Prospect

2021

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The combination of 2D materials and optical biosensors has become a hot research topic in recent years. Graphene, transition metal dichalcogenides, black phosphorus, MXenes, and other 2D materials (metal oxides and degenerate semiconductors) have unique optical properties and play a unique role in the detection of different biomolecules. Through the modification of 2D materials, optical biosensor has the advantages that traditional sensors (such as electrical sensing) do not have, and the sensitivity and detection limit are greatly improved. Here, optical biosensors based on different 2D materials are reviewed. First, various detection methods of biomolecules, including surface plasmon resonance (SPR), fluorescence resonance energy transfer (FRET), and evanescent wave and properties, preparation and integration strategies of 2D material, are introduced in detail. Second, various biosensors based on 2D materials are summarized. Furthermore, the applications of these optical biosensors in biological imaging, food safety, pollution prevention/control, and biological medicine are discussed. Finally, the future development of optical biosensors is prospected. It is believed that with their in-depth research in the laboratory, optical biosensors will gradually become commercialized and improve people's quality of life in many aspects.

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Section: Optical Biosensors Based On 2d Materialsmentioning

confidence: 99%

Section: Optical Biosensors Based On Graphenementioning

confidence: 99%

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2D Material‐Based Optical Biosensor: Status and Prospect

2021

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“…An intensive literature search on the plasmonic studies suggests that no study on the plasmon dispersion and its rate of damping was carried out for composite silicene and graphene materials. This hybrid material could have significant benefits for use in the advancement of: quantum information technology, [39][40][41][42] sensing devices, [43][44][45] and protein analytic clinical devices, [45][46][47][48] etc. With this motivation, in this research work, we choose a system composed of silicene and graphene accompanied by a conducting substrates.…”

Section: Introductionmentioning

confidence: 99%

Plasmon damping rates in Coulomb-coupled two-dimensional layers in a heterostructure

Dahal¹,

Gumbs²,

Iurov³

et al. 2022

Preprint

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The Coulomb excitations of charge density oscillation are calculated for a double layer heterostructure. Specifically, we consider two-dimensional (2D) layers of silicene and graphene on a substrate. From the obtained surface response function, we calculated the plasmon dispersion relations which demonstrate the way in which the Coulomb coupling renormalizes the plasmon frequencies. Additionally, we present a novel result for the damping rates of the plasmons in this Coulomb coupled heterostructure and compare these results as the separation between layers is varied.

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“…Therefore, the bimetallic sensors composed of gold and silver are used to improve the chemical stability and sensitivity of the devices. Since its more useful optical properties than pure gold or silver, sensor based on bimetal have also attracted a lot of attention [ 21 , 22 ]. Such as Liu et al reported a novel biosensor in angular interrogation mode, which has an Ag/Au/BaTiO 3 /graphene bimetallic configuration at the wavelength of 633 nm.…”

Section: Introductionmentioning

confidence: 99%

Tunable Goos-Hänchen Shift Surface Plasmon Resonance Sensor Based on Graphene-hBN Heterostructure

Liu

Jiang

et al. 2021

Biosensors

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In this paper, a bimetallic sensor based on graphene-hexagonal boron nitride (hBN) heterostructure is theoretically studied. The sensitivity of the sensor can be improved by enhancing the Goos–Hänchen (GH) shift in the infrared band. The theoretical results show that adjusting the Fermi level, the number of graphene layers and the thickness of hBN, a GH shift of 182.09 λ can be obtained. Moreover, sensitivity of 2.02 × 105 λ/RIU can be achieved with monolayer graphene, the thickness of gold layer is 20 nm, silver layer is 15 nm, and the hBN thickness of 492 nm. This heterogeneous infrared sensor has the advantages of high sensitivity and strong stability. The research results will provide a theoretical basis for the design of a new high-sensitivity infrared band sensor.

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Graphene–bimetal plasmonic platform for ultra-sensitive biosensing

Cited by 21 publications

References 46 publications

2D Material‐Based Optical Biosensor: Status and Prospect

2D Material‐Based Optical Biosensor: Status and Prospect

Plasmon damping rates in Coulomb-coupled two-dimensional layers in a heterostructure

Tunable Goos-Hänchen Shift Surface Plasmon Resonance Sensor Based on Graphene-hBN Heterostructure

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