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The Core/Shell Composite Nanowires Produced by Self-Scrolling Carbon Nanotubes onto Copper Nanowires

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Keyou Yan†, Qingzhong Xue†*, Dan Xia†, Huijuan Chen†, Jie Xie† and Mingdong Dong‡*

^† College of Physics Science and Technology, China University of Petroleum, Dongying, Shandong 257061, P. R. China

^‡ Rowland Institute at Harvard, Harvard University, 100 Edwin H. Land Boulevard, Cambridge, Massachusetts 02142

ACS Nano, 2009, 3 (8), pp 2235–2240

DOI: 10.1021/nn9005818

Publication Date (Web): August 6, 2009

* Address correspondence to xueqingzhong@tsinghua.org.cn, dong@rowland.harvard.edu.

Section:

Inorganic Chemicals and Reactions

Abstract

We demonstrated a novel method to produce core/shell composite nanowires (NWs) by self-scrolling carbon nanotubes (CNTs) onto copper NWs via forced-field-based molecular dynamic (MD) simulations. When large diameter CNTs are placed beside the copper NWs, the CNTs approach the NWs, collapse, and self-scroll onto the NWs, resulting in coaxial core/shell composite NWs. It is found that the van der Waals force plays an important role in the formation of the composite NWs. The expected outcome of this novel method is to determine various strategies on how to produce composite NWs. Coaxial core/shell composite NWs represent an important class of nanoscale building blocks with substantial potential for exploring new concepts and functional materials.

Keywords:

carbon nanotubes; nanowires; self-scrolling; composite nanowires; molecular dynamic simulation

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History

Published In Issue August 25, 2009
Article ASAPAugust 06, 2009
Received: June 02, 2009
Accepted: July 24, 2009

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The Core/Shell Composite Nanowires Produced by Self-Scrolling Carbon Nanotubes onto Copper Nanowires