Figure 4.
TEM images of nanorods with aspect ratios 4.5 (A), 2.3 (B), and nanoparticles (C). D) Vis-NIR extinction spectra of AuNR 1.0, AuNR 2.3, AuNR 4.5, and LS288 (D). E) Correlation of fluorescence intensity (black) of LS288 and electric field intensity (blue) for AuNR 4.5, AuNR 2.3, and AuNR 1.0.