On the performance of 2D materials based plexcitonic sensor: numerical analysis

In this paper, we propose the implementation of few layers of 2D materials in plexcitonic sensor for sensitivity enhancement. The positioning of the graphene layer implantation in such structure affects the sensitivity. The presence of graphene in contact with analyte offers ∼14% increase in the sensitivity of a bare plexcitonic sensor. Also, the performance of the sensor with the application of other 2D materials such as black phosphorus and MoS₂has been studied. It is found that among graphene and black phosphorous, though MoS₂offers highest sensitivity yet, low operating range limits its appropriateness. We believe that this study will provide a new insight in the applicability of 2D materials for sensing application.