Figure 2

(a,b) Top view SEM images of uncoalesced ELO GaN samples: (a) sample A and (b) sample B; (c,d) cross-sectional SEM images of samples: (c) sample A and (d) sample B.
(a,b) Top view SEM images of uncoalesced ELO GaN samples: (a) sample A and (b) sample B; (c,d) cross-sectional SEM images of samples: (c) sample A and (d) sample B.