Improved performance of the surface plasmon resonance biosensor based on graphene or MoS2 using silicon

Maurya, Jitendra Bahadur; Prajapati, Yogendra Kumar; Singh, Vivek; Saini, J. P.; Tripathi, Rajeev

doi:10.1016/j.optcom.2015.10.010

Cited by 73 publications

(27 citation statements)

References 32 publications

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“…All simulation results were verified with 100% analytical and numerical results. Graphene thickness is given as L = 0.34 nm, where L is the thickness of one graphene layer [11]. The sweeping parameter of the source angle of the incident light was from 36° to 80° and set as a plane wave source as Bloch or regular form in the preferred wavelengths.…”

Section: A Fdtd Simulationmentioning

confidence: 99%

Multilayer CVD-Graphene and MoS₂ Ethanol Sensing and Characterization Using Kretschmann-Based SPR

Menon

Jamil

Mei

et al. 2020

IEEE J. Electron Devices Soc.

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The Kretschmann-based surface plasmon resonance (K-SPR) sensor was developed using multilayer graphene and molybdenum disulphide (MoS2) structures on a plasmonic gold (Au) layer for ethanol detection. In this configuration, the SPR spectra of minimum reflectance versus SPR angle was used to determine the sensitivity, detection accuracy and quality factor as the main figure of merit (FOM). Both graphene and MoS2 were used as hybrid detection layers to enhance the ethanol sensing performance using Finite Difference Time Domain (FDTD). The multilayer graphene/Au and MoS2/Au sensors gave a maximum sensitivity of 192.03/RIU and 153.25/RIU respectively at 785 nm optical wavelength. In terms of material characterization using the K-SPR technique, chemical vapor deposition (CVD)-grown graphene on Au, had a thickness of 1.17 nm with real and imaginary refractive indices of 2.85, 0.74, and 3.1, 1.19, respectively, at optical wavelengths of 670 nm and 785 nm.

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Section: A Fdtd Simulationmentioning

confidence: 99%

Multilayer CVD-Graphene and MoS₂ Ethanol Sensing and Characterization Using Kretschmann-Based SPR

Menon

Jamil

Mei

et al. 2020

IEEE J. Electron Devices Soc.

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“…An N-layer structure was presented in [14] where k n is the complex value of the RI and k is the permittivity of the kth layer with a thickness k d . The characteristic matrix of the N-layer structure can be expressed as…”

Section: Modelingmentioning

confidence: 99%

Effect of Spectral Power Distribution on the Resolution Enhancement in Surface Plasmon Resonance

et al. 2018

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For wavelength interrogation based surface plasmon resonance (SPR) sensors, refractive index (RI) resolution is an important parameter to evaluate the performance of the system. In this paper, we explore the influence of spectral power distribution on the refractive index (RI) resolution of the SPR system by simulating the reflectivity curve corresponding to different incident angles of the classical Kretschmann structure and several different spectral power distribution curves. A wavelength interrogation based SPR system is built, and commercial micro-spectrometers (USB2000 and USB4000) are used as the detection components, respectively. The RI resolutions of the SPR system in these two cases are measured, respectively. Both theoretical and experimental results show that the spectral power distribution has a significant effect on the RI resolution of the SPR system.

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“…Because of practical nature properties of gold metal such as stable, superior performance and good resistance to oxidation and corrosion is chosen as an active metal in the conventional SPR [8]. The most advantages of the use graphene layers can be pointed to large surface to volume ratio and the enhancement of biomolecular absorbance compared with gold, so a number of graphene layers are generated onto an optimized gold thin film to enhance the sensitivity of the SPR sensor [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Abrupt phase change in graphene-gold spr-based biosensor

Bouzari

Amjad

Mohammadkhani

et al. 2020

Mater. Res. Express

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The performance of surface plasmon resonance (SPR) sensors can be different depending on which characteristic of the SPR sensor the amplitude or the phase is monitored. The phase sensitivity strongly depends on the geometry and the optical properties of the system. The existence of sharp changes in the phase spectrum variations is found as the thickness of SPR-supporting gold (d g ) varies around a critical thickness (d c ). In addition, the simulation results indicate that the phase sensitivity is divided into two regions so that phase sensitivity S j for region  d d g c is greater than region d g >d c . It is demonstrated in condition of  d d g c the phase sensitivity has a strong jump when the sensing medium refractive index lies within a certain interval, while the amplitude sensitivity has a monotonic shape. The phase analysis from another aspect exhibits that the phase maximum difference Δj max towards the blank sample is sensitive to refractive index in a continuous interval. As a result, the phase detection interval is tunable by varying the gold thickness, which potentially is important for medical, biology and chemistry applications.

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Improved performance of the surface plasmon resonance biosensor based on graphene or MoS2 using silicon

Cited by 73 publications

References 32 publications

Multilayer CVD-Graphene and MoS₂ Ethanol Sensing and Characterization Using Kretschmann-Based SPR

Multilayer CVD-Graphene and MoS₂ Ethanol Sensing and Characterization Using Kretschmann-Based SPR

Effect of Spectral Power Distribution on the Resolution Enhancement in Surface Plasmon Resonance

Abrupt phase change in graphene-gold spr-based biosensor

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