Fig. 2: Representative electron microscopy images.

a TEM image, b HAADF image, c STEM element mapping images, d aberration-corrected HAADF-STEM and magnified images of CoSA-HC.
a TEM image, b HAADF image, c STEM element mapping images, d aberration-corrected HAADF-STEM and magnified images of CoSA-HC.