Fig. 5.

Validation of BEM simulations against the dipole approximation method and experimental measurements, in the case of (a) 60 nm gold spheres (34 particles), (b) 100 nm diameter polystyrene (n=1.60) spheres (63 particles), and (c) 145 nm polystyrene spheres (24 particles), showing good agreement amongst all three for the entire range of particle sizes. (NA = 0.8, λ = 525 nm in (a–b), λ = 630 nm in (c)).