Figure 3From: Transverse electric field–induced deformation of armchair single-walled carbon nanotubeChanges of dihedral angles that are formed by the atoms in the middle two atom layers of the (7,7) nanotube. The dihedral angles are numbered from 1 to 28, corresponding to the dihedral angles from 4-3-2-1 to 3-2-1-28 in insetBack to article page