Fig. 5
From: A stochastic view on surface inhomogeneity of nanoparticles

Analysis of the functional group distribution on the surface of nanoparticles. a 3D-dSTORM image of a multifunctional nanoparticle is analysed using an EM routine, to obtain the MLE estimate of the functional group locations (solid points). Transparent circles indicate the average estimation error. b Probability density function of NNDs. Plot includes NND distributions for the actual fluorophore locations in a stochastically homogeneous simulation (dashed blue, \(N_{{\mathrm{NND}},{\mathrm{sim}}} = 4.2 \times 10^4\)), for the estimated locations in a stochastically homogeneous simulation (dashed red, \(N_{{\mathrm{NND}},{\mathrm{est}}} = 4.2 \times 10^4\)) and the estimated locations in the experimental dSTORM measurement (solid yellow, \(N_{{\mathrm{NND}},{\mathrm{exp}}} = 1.8 \times 10^4\)). c Cumulative probability distribution of NNDs. Distribution analysis of low- and high-density beads are presented as Supplementary Figs. 14 and 16