Figure 8

(a,b) SEM images of a nanoporousGaN particle grown on a Si (100) substrate using Ni(NO3)2 as catalyst, obtained at two different times of slicing with FIB. (c) Reconstruction of the internal nanoporous structure of the same particle after processing all the images recorded during the slicing process with FIB, including the original external shape of the particle to illustrate the distribution and organization of the nanopores.