The structural properties of GaN/AlN core–shell nanocolumn heterostructures This article has been downloaded from IOPscience. Please scroll down to see the full text article. 2010 Nanotechnology 21 415702 (http://iopscience.iop.org/0957-4484/21/41/415702) Download details: IP Address: 132.168.9.41 The article was downloaded on 01/12/2010 at 08:21 Please note that terms and conditions apply. View the table of contents for this issue, or go to the journal homepage for more Home Search Collections Journals About Contact us My IOPscience