SEM and TEM images and elemental maps. (a) SEM image of the NPs prepared using UV metal-assisted electroless etching technique and (b) TEM image of NPs. (c) Overlaid elemental maps of Ga, N, and O in red, green, and blue, respectively, acquired by EFTEM.
Slimane et al. Nanoscale Research Letters 2013 8:342 doi:10.1186/1556-276X-8-342