sknano.structures.compute_R_chiral_angle¶

sknano.structures.compute_R_chiral_angle(n, m, rad2deg=True)[source][source]¶

Compute “chiral angle” of symmetry vector \(\theta_R\).

\[\theta_R = \tan^{-1}\left(\frac{\sqrt{3}q}{2p + q}\right)\]

Parameters:

Parameters:	n, m : int Chiral indices defining the nanotube chiral vector \(\mathbf{C}_h = n\mathbf{a}_1 + m\mathbf{a}_2 = (n, m)\). rad2deg : bool, optional If True, return angle in degrees
Returns:	float Chiral angle of symmetry vector \(\theta_R\) in degrees (default) or radians (if rad2deg=False).

n, m : int

Chiral indices defining the nanotube chiral vector \(\mathbf{C}_h = n\mathbf{a}_1 + m\mathbf{a}_2 = (n, m)\).

rad2deg : bool, optional

If True, return angle in degrees

Returns:

float

Chiral angle of symmetry vector \(\theta_R\) in degrees (default) or radians (if rad2deg=False).