Zipper mechanism of nanotube fusion: theory and experiment.

Zipper mechanism of nanotube fusion: theory and experiment.

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 energetica...

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Chi tiết về thư mục
Những tác giả chính: Yoon, M, Han, S, Kim, G, Lee, S, Berber, S, Osawa, E, Ihm, J, Terrones, M, Banhart, F, Charlier, J, Grobert, N, Terrones, H, Ajayan, P, Tománek, D
Định dạng: Journal article
Ngôn ngữ:English
Được phát hành: 2004
Miêu tả
Tóm tắt: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.

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