title: Nanoscale reduction of graphene fluoride via thermochemical nanolithography.
abstract: Graphene nanoribbons (GNRs) would be the ideal building blocks for all carbon electronics; however, many challenges remain in developing an appropriate nanolithography that generates high-quality ribbons in registry with other devices. Here we report direct and local fabrication of GNRs by thermochemical nanolithography, which uses a heated AFM probe to locally convert highly insulating graphene fluoride to conductive graphene. Chemically isolated GNRs as narrow as 40 nm show p-doping behavior and sheet resistances as low as 22.9 KΩ/□ in air, only approximately 10× higher than that of pristine graphene. The impact of probe temperature and speed are examined as well as the variable-temperature transport properties of the GNR.
authors.affiliation: U.S. Naval Research Laboratory, Washington, DC 20375, USA. woo.lee@nrl.navy.mil
authors.forename: Woo-Kyung
authors.initials: WK
authors.lastname: Lee
authors.forename: Michael
authors.initials: M
authors.lastname: Haydell
authors.forename: Jeremy T
authors.initials: JT
authors.lastname: Robinson
authors.forename: Arnaldo R
authors.initials: AR
authors.lastname: Laracuente
authors.forename: Elena
authors.initials: E
authors.lastname: Cimpoiasu
authors.forename: William P
authors.initials: WP
authors.lastname: King
authors.forename: Paul E
authors.initials: PE
authors.lastname: Sheehan
mesh_terms: D003460:Crystallization / Q000379:methods*; D004735:Energy Transfer; D005459:Fluorides / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D006358:Hot Temperature; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D054802:Molecular Imprinting / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010084:Oxidation-Reduction; D010316:Particle Size; D010781:Photography / Q000379:methods*; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D006108:Graphite; D005459:Fluorides