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Double-helix structure in multiwall boron nitride nanotubes

Acta Cryst. (2005). A61, 533–541 [doi:10.1107/S0108767305026723]

[Nanotube] Diffraction pattern recorded from a 50 nm section of BN nanotube, which shows evidence of both faceted and circular tube.
Electron diffraction patterns can be recorded from individual nanostructures for their structure determination. A study of multiwall, chiral, boron nitride nanotubes is reported. The combination of diffraction information (obtained using a 50 nm parallel electron beam along different tube sections) and electron imaging shows that the tube structure consists of two helices, one highly crystalline and faceted and the other circular and less ordered. This type of structure is present in BN tubes exhibiting similar chirality among its different walls.
A. Celik-Aktas, J.-M. Zuo, J. F. Stubbins, C. Tang and Y. Bando