Gold Nanoparticles as Probes for Nano-Raman Spectroscopy: Preliminary Experimental Results and Modeling
Figure 7
Raman enhancement factor estimated by Finite Elements Analysis (FEA) in the vicinity of the surface of interest, as a function of the tip-surface distance (0.1 to 40 nm). The inset shows the tip approach from the incident beam and the shadowing of the incident beam during the approach process.
