Figure 1
(a) The hexagonal tiling together with the translation vectors [{\bf x}], [{\bf y}] and the chiral vector [{\bf{v}} = 6{\bf{x}} + 2{\bf y}]. (b) The [6, 2] carbon nanotube obtained by rolling up the hexagonal tiling in (a) along the chiral vector [{\bf{v}}].  [article HTML]

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