Fig. 2: Evidence of displacement resonance.

a Scattering cross-section of ED, MD, EQ and MQ modes calculated via MDA analysis. Each colormap shows the scattering cross-section contribution from the corresponding mode in specific size and displacement. The color represents the ratio of each multipole’s contribution to the total scattering cross-section in percentage. b Size-dependent LSM images of silicon nanocuboids. The scattering intensities were normalized with individual images. The polarization direction of the electric field is horizontal. The yellow squares in the upper-right corner indicate the size of nanocuboids. Here the excitation intensity was enough low to avoid nonlinear scattering. c Multipole decomposition analysis (MDA) of four representative particles with focus displacements, to understand the image formation mechanism in b. d Simulated images and the corresponding line profiles of the four representative particles. The black lines are experimental data, red lines are calculated profiles, showing extraordinary agreement.