Performance of graphene–MoS2 based surface plasmon resonance sensor using Silicon layer

Abstract

In this paper a graphene-MoS 2 hybrid structure based surface plasmon resonance biosensor is presented. The performance parameters of the proposed sensor are defined in terms of sensitivity, detection accuracy and quality factor. By the addition of hybrid graphene-MoS 2 layer the sensitivity is enhanced but the quality factor and detection accuracy is decreased. Hence to increase the quality factor and detection accuracy a silicon layer is included between metal and MoS 2 layer. It is observed that the full width at half maximum of reflectance curve is minimized up to great extent with little decrement in the sensitivity due to the inclusion of silicon layer. Furthermore in this paper, the effect of increasing the number of layers of graphene and MoS 2 is also analyzed.

GeSe nanosheets modified surface plasmon resonance sensors for enhancing sensitivity

“…The simplest Kretschmann configuration consists of a coupling prism, a metal film in the middle layer, and a sensing medium at the bottom, in which the metal film is selected according to the desired resonance in the reflection spectrum. A gold film is considered as the most suitable choice due to the strong antioxidant capacity, great optical properties and chemical stability [17]. However, the gold films still have a series of limitations, such as poor compatibility and adsorption of gold film with biomolecules [18], resulting in low detection sensitivity, especially for some traces of small molecular analytes with low concentration.…”

Valley plasmonics in transition metal dichalcogenides

“…These materials host rich plasmonic physics including an interplay of plasmons with charge density waves [18][19][20] and first plasmon based applications have already been proposed [21][22][23] .…”

Analysis of a metal clad waveguide sensor having metamaterial as a guiding layer

“…represents FWHM (full width half maxima) of the reflectance curve correspond− ing to 50% reflectivity [19][20]. The detection accuracy of the proposed sensor is far better than that of metal clad waveguide sensor [9] in case of silver cladding, while it is comparable in case of gold metal cladding as shown in Table 5.…”