Fig. D.1

Colored solid lines: FDTD-spectra for single oblate particles with equivalent sphere radius r = 0.75 μm and axis ratio 1:1.4 for certain geometries. Dotted lines: orientation-averaged spectra calculated in the electrostatic limit. If only the band between 11 and 15 μm is considered, the spectra of the electrostatic approximation lead to erroneous interpretations.
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