Figure 2
From: Nucleation and growth of (10͞11) semi-polar AlN on (0001) AlN by Hydride Vapor Phase Epitaxy
Characterization of 
twin boundary with TEM.
(a) The enlarged image of the interface between the sawtooth and the column. (b) SAED pattern corresponding to the left and right interfaces between the sawtooth and the column, which indicates that the two interfaces are (
) twin boundaries. (c) HRTEM image taken from the right interface which indicates it is (
) coherent twin boundary. (d) HRTEM image taken from the left interface which indicates it is (
) incoherent twin boundary.
