Figure 3.
Plasmonic properties of nanoparticles-on-mirror of different sizes. (a) Typical darkfield image for 80 nm gold nanoparticles on a biphenyl-4-thiol self-assembled monolayer on an atomically smooth gold film. (b) Scattering spectra of different sized particles. (c) Evolution of the coupled modes (BDP and BQP) and the uncoupled (transverse) mode with increasing nanoparticle size, with prediction from LCR model (gray dotted).22 (d) Integrated scattered intensity of the BDP as a function of nanoparticle size. Marker size shows broadening of the BDP for larger nanoparticle sizes. Inset: log–log plot showing characteristic r6 dependence.