sknano.structures.compute_Lz¶

sknano.structures.compute_Lz(*Ch, *, nz=1, bond=None, **kwargs)[source][source]¶

Compute $L_z = L_{\mathrm{tube}}$ in nanometers.

$L_z = n_z |\mathbf{T}|$

Parameters:

Parameters:	Ch : {`tuple` or `int`s} Either a 2-tuple of ints or 2 integers giving the chiral indices of the nanotube chiral vector $\mathbf{C}_h = n\mathbf{a}_1 + m\mathbf{a}_2 = (n, m)$ . nz : {int, float} Number of nanotube unit cells bond* : float, optional Distance between nearest neighbor atoms (i.e., bond length). Must be in units of Å. Default value is the carbon-carbon bond length in graphite, approximately $\mathrm{a}_{\mathrm{CC}} = 1.42$ Å
Returns:	float $L_z = L_{\mathrm{tube}}$ in nanometers

*Ch : {tuple or ints}

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

nz : {int, float}

Number of nanotube unit cells

bond : float, optional

Distance between nearest neighbor atoms (i.e., bond length). Must be in units of Å. Default value is the carbon-carbon bond length in graphite, approximately $\mathrm{a}_{\mathrm{CC}} = 1.42$ Å

Returns:

float

$L_z = L_{\mathrm{tube}}$ in nanometers