Figure 7

SEM pictures of nanoporous GaN films deposited on Si (111) substrates coated with different catalysts: (a) Ni(NO3)2, (b) Ni, (c) Au, (d) Pt, and (e) Ti.

SEM pictures of nanoporous GaN films deposited on Si (111) substrates coated with different catalysts: (a) Ni(NO3)2, (b) Ni, (c) Au, (d) Pt, and (e) Ti.