DNA Hybridization Detection Based on Resonance Frequency Readout in Graphene on Au SPR Biosensor

Figure 1

(a) Schematic of the 4-layerd model for surface plasmon resonance (SPR) biosensor: prism, Au (50 nm), graphene ( nm, where is the number of graphene sublayers), and sensing medium (water). (b) The T~SRF curves for the conventional biosensor () and graphene coated biosensor (for ) before the adsorption of DNA molecules.

(a)

(b)