Fig. 2

The total scattering efficiency of a spherical dielectric nanoparticle as a function of the refractive index n under first Kerker’s condition within dipole approximation. In the insets, the two-dimension scattering patterns are further calculated for spherical dielectric nanoparticles of r = 0.24 μm versus n = 2.5, 3, and 3.5 corresponding to λ = 1.38, 1.65, and 1.93 μm