Mads Brandbyge

TL;DR: One of the main conclusions of the theoretical analysis is that, due to the plastic deformation of the nanowires formed by the STM, the typical length scale of the variations in the shape of the boundary is not an atomic radius but rather five times that value.

TL;DR: It is found that the CIFs, due to the electron-phonon coherence, can control the spatial heat dissipation in the conductor, which yields a significant asymmetric concentration of excess heating (hot spot) even for a symmetric conductor.

Abstract: During the last decade, on‐surface fabricated graphene nanoribbons (GNRs) have gathered enormous attention due to their semiconducting π‐conjugated nature and atomically precise structure. A significant breakthrough is the recent fabrication of nanoporous graphene (NPG) as a 2D array of laterally bonded GNRs. This covalent integration of GNRs could enable complex electronic functionality at the nanoscale; however, for that, it is crucial to externally control the electronic coupling between GNRs within NPGs, which, to date, has not been possible. Using quantum chemical calculations and large‐scale transport simulations, this study demonstrates that such control is enabled in a newly designed quinone‐NPG (q‐NPG) thanks to its GNRs inter‐connections based on electroactive para‐benzoquinone units. As a result, the spatial distribution of injected currents in q‐NPG may be tuned, with sub‐nanometer precision, via the application of external electrostatic gates and electrochemical means. These results thus provide a fundamental strategy to design organic nanodevices with built‐in externally tunable electronics and spintronics, which is key for future applications such as bio‐chemical nanosensing and carbon nanoelectronics.