Jump to main content
Jump to site search

Issue 21, 2016
Previous Article Next Article

From brittle to ductile: a structure dependent ductility of diamond nanothread

Author affiliations

Abstract

As a potential building block for the next generation of devices/multifunctional materials that are spreading in almost every technology sector, one-dimensional (1D) carbon nanomaterial has received intensive research interests. Recently, a new ultra-thin diamond nanothread (DNT) has joined this palette, which is a 1D structure with poly-benzene sections connected by Stone–Wales (SW) transformation defects. Using large-scale molecular dynamics simulations, we found that this sp3 bonded DNT can transition from brittle to ductile behaviour by varying the length of the poly-benzene sections, suggesting that DNT possesses entirely different mechanical responses than other 1D carbon allotropes. Analogously, the SW defects behave like a grain boundary that interrupts the consistency of the poly-benzene sections. For a DNT with a fixed length, the yield strength fluctuates in the vicinity of a certain value and is independent of the “grain size”. On the other hand, both yield strength and yield strain show a clear dependence on the total length of DNT, which is due to the fact that the failure of the DNT is dominated by the SW defects. Its highly tunable ductility together with its ultra-light density and high Young's modulus makes diamond nanothread ideal for the creation of extremely strong three-dimensional nano-architectures.

Graphical abstract: From brittle to ductile: a structure dependent ductility of diamond nanothread

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Mar 2016, accepted on 09 May 2016 and first published on 10 May 2016


Article type: Paper
DOI: 10.1039/C6NR02414A
Citation: Nanoscale, 2016,8, 11177-11184
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    From brittle to ductile: a structure dependent ductility of diamond nanothread

    H. Zhan, G. Zhang, V. B. C. Tan, Y. Cheng, J. M. Bell, Y. Zhang and Y. Gu, Nanoscale, 2016, 8, 11177
    DOI: 10.1039/C6NR02414A

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements