Figure 2.

Schematic of two limiting cases for calculation of the collision diameter of a fractal-like coated core agglomerate (a) having original core primary particle diameter d_pc: b) d_cs when accounting for the deposited coating as evenly distributed smooth shells with total thickness δ. So, its new primary particle diameter is d_pcs = d_pc + 2δ. c) d_cr when describing the core agglomerate and fractal-like coating as one agglomerate with equal surface area and volume consisting of n_pcr equivalent monodisperse primary particles of diameter d_pcr.