Fig. 3From: Structure Shift of GaN Among Nanowall Network, Nanocolumn, and Compact Film Grown on Si (111) by MBEGrowth models of the GaN nanowall network. a The pre-deposited Al droplets on the Si substrate. b Nucleation of the GaN nanowall network on the bare Si. c Cross-sectional illustration of the GaN nanowall network grown vertically at the N-rich condition. d Tilt illustration of the GaN nanowall networkBack to article page