Effect of BlueP/MoS2 Heterostructure and Graphene layer on the Performance Parameter of SPR Sensor: Theoretical insight

Prajapati, Yogendra Kumar; Srivastava, Akash

doi:10.1016/j.spmi.2019.03.016

Cited by 52 publications

(19 citation statements)

References 26 publications

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“…However, when sensing structure works in the visible region [32–34] (633 nm incident light wavelength) the relative sensitivity obtained as 68.52°/RIU, which is greater than the previous case. Sensitivity enhancement is directly related to the metal nature having a complex refractive index.…”

Section: Resultsmentioning

confidence: 83%

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Theoretical study of hazardous carbon‐di‐oxide gas sensing using MIM structure‐based SPR sensing scheme

Srivastava

Verma²,

Prajapati

2021

IET Optoelectronics

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This work mainly focussed on the sensing of the environmentally damaging gas carbon dioxide (CO 2 ) by designing a gas sensor based on a surface plasmon resonance (SPR) principle. The proposed model is based on the metal-insulator-metal (MIM) model which mainly relies on metal thickness, dielectric thickness, and incident light wavelength. A comparative analysis between conventional as well as MIM-based structure is shown in this study and it is observed that by operating at 4400 nm incident light wavelength,the MIM-based structure shows sharp resonance curve, high resolution, minimum FWHM, and extremely high FOM. By using the modified Elden's formulae, the variation in refractive index is investigated by changing the numerical values of humidity, temperature, pressure, and CO 2 content from the reference value, respectively. For each case, the sensitivity has been estimated. By using the proposed MIM-based structure, FOM value as high as 1273.11RIU −1 ; at the end of this article, limit of detection (LOD) is calculated by varying the CO 2 gas concentration.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Resultsmentioning

confidence: 83%

“…Reflection and transmission of the proposed multi-layered structure or the reflectivity of P polarized light can be calculated by transfer matrix method [31][32][33]. The tangential field between the boundaries is related by-…”

Section: Excitation Of Surface Plasmons As Well As Their Typesmentioning

confidence: 99%

Theoretical study of hazardous carbon‐di‐oxide gas sensing using MIM structure‐based SPR sensing scheme

Srivastava

Verma²,

Prajapati

2021

IET Optoelectronics

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“…For example, Prajapati and Srivastava proposed a optical biosensing based on SPR technology—blue P/MoS 2 heterostructure and graphene combination. [ 130 ] As shown in Figure 14 a , p‐polarized light is incident on BK7 metal‐coated prism at a certain angle, and the incident angle is changed according to the angle inquiry method. However, the gold layer has poor absorption of biomolecules, which limits the sensitivity of conventional biosensors.…”

Section: Optical Biosensors Based On 2d Materialsmentioning

confidence: 99%

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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“…By applying a thin silicon layer directly over the bimetallic layer, it is observed that the sensitivity enhanced significantly. Existence of dielectric silicon layer enhances the field intensity of the exciting light [26]. In a conventional SPR sensor, the only metal layer is responsible for absorption whereas due to the addition of silicon layer the absorption takes place both in metal as well as silicon layer.…”

Section: Theoretical Mathematical Overview and Design Considerationmentioning

confidence: 99%

Application of Carbon Nanotube (CNT) in Glucose Liquid Sample Sensing Using SPR Technique

Srivastava

Singh

Prajapati

2021

Lecture Notes in Electrical Engineering

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Effect of BlueP/MoS2 Heterostructure and Graphene layer on the Performance Parameter of SPR Sensor: Theoretical insight

Cited by 52 publications

References 26 publications

Theoretical study of hazardous carbon‐di‐oxide gas sensing using MIM structure‐based SPR sensing scheme

Theoretical study of hazardous carbon‐di‐oxide gas sensing using MIM structure‐based SPR sensing scheme

2D Material‐Based Optical Biosensor: Status and Prospect

Application of Carbon Nanotube (CNT) in Glucose Liquid Sample Sensing Using SPR Technique

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