A Stone–Wales defect is the rearrangement of the six-membered rings of graphene into pentagons and heptagons.[ This rearrangement is a result of π/2 (90°) rotation of a C–C bond. The density of Stone–Wales defects is usually small due to the high activation barrier of several eV for the bond rotation. However, the defects has been imaged using scanning tunneling microscopy as well as resonant–vibrational spectroscopy techniques[clarifyA number of theoretical studies have shown that the absorption energies and charge transfer energies for single-walled carbon nanotubes are larger than the corresponding values on pristine carbon nanotubesThe diminished resonance and higher strain energy of this defect increased the probability of nucleophilic attack which provides a possible explanation for the enhanced reactivity. Research has also shown the incorporation of defects along a carbon-nanotube network can program a carbon-nanotube circuit to enhance the conductance along a specific path. These defects lead to a charge de localization which redirects and incoming electron down a given trajectory/as shown as a attachment file

now how we can calculate current of cnt fet with stone walls defect?