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Applied Physics Letters / Volume 100 / Issue 3 / NANOSCALE SCIENCE AND TECHNOLOGY

Appl. Phys. Lett. 100, 033118 (2012); http://dx.doi.org/10.1063/1.3678342 (4 pages)

Enhancing interwall load transfer by vacancy defects in carbon nanotubes

David Santo Pietro1,2, Chun Tang1, and Changfeng Chen1

1Department of Physics and High Pressure Science and Engineering Center, University of Nevada, Las Vegas, Nevada 89154, USA
2Science Department, The Meadows School, Las Vegas, Nevada 89128, USA

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(Received 17 November 2011; accepted 3 January 2012; published online 20 January 2012)

Structural defects usually reduce the load carrying capacity of materials. Here, we show by molecular dynamics simulations an anomalous vacancy-defect-induced enhancement of interwall load transfer in annealed carbon nanotubes (CNTs). The large increase of load transfer mainly stems from the hybrid sp2-sp3 interwall bonds at the vacancy edges, which are stronger than the sp3 interwall bonds in pristine CNTs. This finding offers insights for better understanding and designing CNT-based high-performance nanocomposites.

© 2012 American Institute of Physics

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KEYWORDS, PACS, and IPC

Keywords

annealing, carbon nanotubes, molecular dynamics method, vacancies (crystal)

PACS

International Patent Classification (IPC)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3678342

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    Z. H. Xia, P. R. Guduru, and W. A. Curtin, Phys. Rev. Lett. 98, 245501 (2007).

    Y. Y. Zhang, C. M. Wang, and Y. Xiang, J. Appl. Phys. 109, 083516 (2011)JAPIAU000109000008083516000001.

    E. Byme, M. McCarthy, Z. Xia, and W. Curtin, Phys. Rev. Lett. 103, 045502 (2009).

    C. Tang, W. L. Guo, and C. F. Chen, Phys. Rev. B 79, 155436 (2009).

    X. Zhao, Y. Liu, S. Inouse, T. Suzuki, R. Jones, and Y. Ando, Phys. Rev. Lett. 92, 125502 (2005).


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