Figure 9From: Selective aggregation of PAMAM dendrimer nanocarriers and PAMAM/ZnPc nanodrugs on human atheromatous carotid tissues: a photodynamic therapy for atherosclerosisLog-log plots illustrating calculation of fractal dimension by different methods for the 2 × 2 μm AFM images. (a) Variance, (b) cube counting, (c) triangulation and (d) power spectrum.Back to article page