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Accurate measurement of the chirality of WS2 nanotubes

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Abstract

We describe the structural parameters and atomic positions of a single-walled WS2 nanotube. The structure factor is calculated in detail using analytic expressions for both single-walled and multi-walled WS2 nanotubes. A zoning scheme has been developed to obtain the ratio m/n from the electron diffraction patterns. The procedure for determination of the chiral indices of both single-walled and multi-walled WS2 nanotubes and the tilt angle is illustrated in detail for either normal incidence or inclined incidence. As an example of application, the determination of the chiral indices of a five-shell WS2 nanotube was carried out and the tilt angle was obtained as 17.7°. The method developed here is useful and valid to determine the atomic structure of WS2 nanotubes.

Graphical abstract: Accurate measurement of the chirality of WS2 nanotubes

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Publication details

The article was received on 09 Mar 2017, accepted on 14 Apr 2017 and first published on 19 Apr 2017


Article type: Paper
DOI: 10.1039/C7NR01688C
Citation: Nanoscale, 2017, Advance Article
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    Accurate measurement of the chirality of WS2 nanotubes

    Y. Chen, H. Deniz and L. Qin, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR01688C

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