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Fig. 6. Typical high-resolution TEM images recorded at the nanocrystal edges showing the presence of defects and the different extent of deviations from an ideal spherical shape for (a) PdNC-1, (b) PdNC-2, (c) PdNC-3, (d) PdNC-4 and (e) PdNC-5. The yellow lines a guide to the eye.