Figure 8: Quantum conductance calculations.
From: Strain-induced metal–semiconductor transition observed in atomic carbon chains

(a) shows the transmission along an infinite nanotube (purple), an infinite nanoribbon (green) and through the carbon chain contacted to a semi-infinite nanoribbon on one side and a semi-infinite capped nanotube on the other side (orange). The middle panel also includes the ab inito electronic charge density of the nanoribbon–chain–nanotube configuration. (b) Calculated current–voltage curve for the nanoribbon–chain–nanotube system exhibiting a clear rectifying behaviour. The inset presents a close-up in a narrower window of energy.