sknano.structures.compute_chiral_angle

sknano.structures.compute_chiral_angle(*Ch, *, degrees=True, **kwargs)

Compute chiral angle $\theta_c$.

$$\theta_c = \tan^{-1}\left(\frac{\sqrt{3} m}{2n + m}\right)$$

Parameters:

*Ch : {tuple or ints}

Either a 2-tuple of ints or 2 integers giving the chiral indices of the nanotube chiral vector $\mathbf{C}_h = n\mathbf{a}_1 + m\mathbf{a}_2 = (n, m)$.

degrees : bool, optional

If True, return angle in degrees.

Returns:

float

Chiral angle $\theta_{c}$ in degrees (default) or radians (if degrees=False).