title: Precise milling of nano-gap chains in graphene with a focused helium ion beam.
abstract: A focused helium ion beam was used to introduce nano-sized gap chains in graphene. The effect of beam scanning strategies in the fabrication of the nano-gap chains was investigated. The tuning of graphene conductivity has been achieved by modulating the magnitude and uniformity of the ion dose and hence the morphology of the nano-gap chains. A model based on the site-specific and dose-dependent conductivity was built to understand the tuning of the conductivity, taking into account the nanoscale non-uniformity of irradiation.
authors.affiliation: School of Physics and CRANN, Trinity College Dublin, Ireland.
authors.forename: Yangbo
authors.initials: Y
authors.lastname: Zhou
authors.forename: Pierce
authors.initials: P
authors.lastname: Maguire
authors.forename: Jakub
authors.initials: J
authors.lastname: Jadwiszczak
authors.forename: Manoharan
authors.initials: M
authors.lastname: Muruganathan
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Mizuta
authors.forename: Hongzhou
authors.initials: H
authors.lastname: Zhang