Accurate measurement of the chirality of WS2 nanotubes

Nanoscale
Youhu ChenLu-Chang Qin

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.

References

Sep 16, 2000·Physical Review Letters·G SeifertT Frauenheim
Dec 14, 2006·Physical Chemistry Chemical Physics : PCCP·Lu-Chang Qin
Oct 8, 2008·Proceedings of the National Academy of Sciences of the United States of America·Maya Bar SadanReshef Tenne

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Citations

May 5, 2018·Acta Crystallographica. Section A, Foundations and Advances·Azat Khadiev, Zufar Khalitov

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