High Resolution TEM Study of WS2 Nanotubes


High Resolution TEM Study of WS2 Nanotubes

Krause, M.; Mücklich, A.; Zak, A.; Seifert, G.; Gemming, S.

Closed capped WS2 nanotubes with diameters from 30 to 110 nm are studied by high resolution transmission electron microscopy. The tubes exhibit preferentially a hexagonal stacking order. Atomic resolution images of a 30 nm diameter tube reveal a zigzag chirality. A lattice expansion in c-axis direction of ≤ 11% is found within the outermost triple layers. The tube caps often display regular polygon angles. Structural defects like grain boundaries, non-planar triple layers, dislocations, platelet-like fragments, terraces, and amorphous precipitates are identified.

Keywords: Inorganic Nanotubes; HRTEM; Microstructure; Structural Defects

  • Physica Status Solidi (B) 248(2011)11, 2716-2719

Permalink: https://www.hzdr.de/publications/Publ-15599
Publ.-Id: 15599