Abstract
When a carbon nanotube is flattened in two different directions, a nanotetrahedron is formed between the two nanoribbons. The distribution of the angles between the nanoribbons provides a clue to understanding the mechanism for the formation of nanotetrahedra. In this study, the angles between nanoribbons are measured using transmission electron microscopy-based electron beam tomography. The results are consistent with the proposed origami mechanism, in which the direction of flattening changes by approximately 90° during the growth of multi-walled carbon nanotubes.
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