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: Theoretical Investigations into Self-Organized Ordered Metallic Semi-Clusters Arrays on Metallic Substrate | Nanoscale Res Lett 2010 5 1020-1026 DOI s11671-010-9595-0 NANO EXPRESS Theoretical Investigations into Self-Organized Ordered Metallic Semi-Clusters Arrays on Metallic Substrate Xiao-Chun Wang Han-Yue Zhao Nan-Xian Chen Yong Zhang Received 24 January 2010 Accepted 29 March 2010 Published online 13 April 2010 The Author s 2010. This article is published with open access at Abstract Using the energy minimization calculations based on an interfacial potential and a first-principles total energy method respectively we show that 2 X 2 3 X 3 Pb Cu 111 system is a stable structure among all the n - 1 X n - 1 n X n Pb Cu 111 n 2 3 . 12 structures. The electronic structure calculations indicate that self-organized ordered Pb semi-clusters arrays are formed on the first Pb monolayer of 2 X 2 3 X 3 Pb Cu 111 which is due to a strain-release effect induced by the inherent misfits. The Pb semi-clusters structure can generate selective adsorption of atoms of semiconductor materials . Ge around the semi-clusters therefore can be used as a template for the growth of nanoscale structures with a very short periodic length A . Keywords Self-organized Template Interface potential Molecular dynamics First-principles calculation Introduction The microelectronics industries have refined the fabrication methods to make ever smaller devices but these methods will soon reach their fundamental limits. A promising alternative way for the fabrication of nanometer functional X. -C. Wang . Zhao . Chen Department of Physics Tsinghua University 100084 Beijing People s Republic of China e-mail wangxiaochun@ Y. Zhang Department of Electrical and Computer Engineering and Center for Optoelectronics The University of North Carolina at Charlotte Charlotte NC 28223-0001 USA systems is to grow self-organized atoms and molecules on well-defined surface templates with periodic structures. This idea is of great interest not only for its promising .
