Figure 6.

COMSOL simulation results (blue, data points) of the scattered electric field intensity maxima where the center-to-center distance and angular position is varied for the tip-nanoparticle system. Because the center-to-center distance remains fixed when the angular positioned is varied, the position of the tip is described by the projection of the center-to-center distance on the x-axis. The simulation is overlaid with the intensity profile from a single nanoparticle on cell membrane (red) and from our previous results of a single nanoparticle on a glass surface (black).¹⁸ The illustration depicts the path the tip takes over the nanoparticle used in the model.