CHIH-CHUNG YANG2018-09-102018-09-102009http://www.scopus.com/inward/record.url?eid=2-s2.0-68249159701&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/348159Threading dislocation evolution in patterned GaN nanocolumn growth and coalescence overgrowthjournal article10.1063/1.3176984