Exploring Graphene Effect on Fiber Optic Surface Plasmon Resonance Biosensor

TL;DR

This paper explores how adding Graphene layers affects the sensitivity and accuracy of Fiber Optic Surface Plasmon Resonance biosensors with Gold and Silver films, finding increased sensitivity but decreased accuracy, especially with Silver.

Contribution

It provides a comparative analysis of Graphene layer effects on FO-SPR biosensors with different metallic films, identifying optimal design configurations.

Findings

Graphene increases biosensor sensitivity.

Detection accuracy decreases with Graphene addition.

Silver-based sensors benefit more in sensitivity from Graphene.

Abstract

This report investigates design enhancements of Fiber Optic Surface Plasmon Resonance (FO-SPR) biosensors with Gold and Silver metallic films. The effect of adding a Graphene coating on the sensitivity and detection accuracy of FO-SPR biosensors is studied. We also compare the results for the addition of five layers of Graphene on both Gold-based and Silver-based FO-SPR biosensors in order to determine the optimum sensor design. Our results indicate that the sensitivity of the biosensor increases when a Graphene coating is added, while the detection accuracy decreases. Results also demonstrate that the sensitivity due to adding Graphene sheets increases more for Silver-based biosensor when compared to Gold-based biosensors.