Interactions between Plasmonic Nanoparticles with a Kretschmann-Configuration SPR Setup

We studied by SPR sensor the interactions in nanoparticles suspended in liquids and between the NPs and the sensor gold surface. After calibration with NaCl, suspensions were dried to measure the continuously reconcentrating NP suspensions. The results suggest that by means of this method we can determine the concentration of NPs and their refractive index.