Optical microscopy and Raman Spectroscopy were used to assess ablation of the graphene, as well as stylus profilometery indicating no damage of the SiO2 substrate. CVD graphene devices were electrically characterized and showed comparable field-effect mobility, doping level, on-off ratio, and conductance minimum before and after laser ablation fabrication. Further details can be found here .
David Mackenzie is a researcher in the Nanocarbon group based at the Department of Micro & Nanotechnology, Technical University of Denmark. Research interests include fabricating graphene devices, electrical and gas sensing measurements.