(a, b) Infusion maps of AFM height maps (green scale bar) and IR maps (blue scale bar) for TE polarization with E parallel (a) and perpendicular (b) to the main axis of the nanorods. IR maps are acquired at 1100 cm⁻¹ and 1600 cm⁻¹ for (a) and (b), respectively. (c, d) Infusion maps of AFM height maps and IR maps for TM polarization with E parallel (c) and perpendicular (d) to the main axis of the nanorods. IR maps are acquired at 1196 cm⁻¹ and 1740 cm⁻¹ for (a) and (b), respectively. In all infusion maps, regardless of light polarization and relative orientations between E and the main axis of the nanorods, it is possible to identify an overall distribution of blue regions with higher IR intensity.