Phys. Rev. Lett. 92, 075504 (2004) [4 pages]Zipper Mechanism of Nanotube Fusion: Theory and ExperimentReceived 12 August 2003; published 19 February 2004 We propose a new microscopic mechanism to explain the unusually fast fusion process of carbon nanotubes. We identify the detailed pathway for two adjacent (5,5) nanotubes to gradually merge into a (10,10) tube, and characterize the transition states. The propagation of the fused region is energetically favorable and proceeds in a morphology reminiscent of a Y junction via a zipper mechanism, involving only Stone-Wales bond rearrangements with low activation barriers. The zipper mechanism of fusion is supported by a time series of high-resolution transmission electron microscopy observations. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.075504
DOI:
10.1103/PhysRevLett.92.075504
PACS:
61.46.+w, 64.70.Nd, 68.37.Lp, 81.07.De
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