Figure 4
From: Real-time detection of influenza A virus using semiconductor nanophotonics
BSA physisorption studied with a commercial system. The well-known physisorption of BSA is employed as a characterization tool for the evaluation of the SNR for all the devices and methods presented. This figure presents the SPR peak shift, in μm−1, induced by a 2% BSA solution. ΔB is defined as the bulk shift, when the saturation occurs for the investigated solution. ΔS is defined as the surficial shift, measured after the surface is rinsed by the buffer and only physisorbed molecules contribute to the shift. BSA, bovine serum albumin; SNR, signal to noise ratio; SPR, surface plasmon resonance.
