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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Initial Growth of Single-Crystalline Nanowires: From 3D Nucleation to 2D Growth | Nanoscale Res Lett 2010 5 1057-1062 DOI 10.1007 s11671-010-9602-5 NANO EXPRESS Initial Growth of Single-Crystalline Nanowires From 3D Nucleation to 2D Growth X. H. Huang G. H. Li G. Z. Sun X. C. Dou L. Li L. X. Zheng Received 9 February 2010 Accepted 2 April 2010 Published online 17 April 2010 The Author s 2010. This article is published with open access at Springerlink.com Abstract The initial growth stage of the single-crystalline Sb and Co nanowires with preferential orientation was studied which were synthesized in porous anodic alumina membranes by the pulsed electrodeposition technique. It was revealed that the initial growth of the nanowires is a three-dimensional nucleation process and then gradually transforms to two-dimensional growth via progressive nucleation mechanism which resulting in a structure transition from polycrystalline to single crystalline. The competition among the nuclei inside the nanoscaled-con-fined channel and the growth kinetics is responsible for the structure transition of the initial grown nanowires. Keywords Nanowire Electrodeposition Anodic alumina membrane Initial growth mechanism X. H. Huang G. H. Li X. C. Dou L. Li Key Laboratory of Material Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology Institute of Solid State Physics Chinese Academy of Sciences 230031 Hefei People s Republic of China e-mail ghli@issp.ac.cn G. Z. Sun L. X. Zheng School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore Singapore Present Address X. H. Huang Department of Electrical and Computer Engineering National University of Singapore Singapore Singapore Introduction Single-crystalline nanowires are essential for the development of the functional nanodevices 1 and many approaches have been reported so far to synthesize nanowires including chemical vapor deposition hydrothermal synthesis membrane-based fabrication and so on 2-6 . Among these methods the electrodeposition combined with anodic alumina .
