title: Discrete dynamics of nanoparticle channelling in suspended graphene.
abstract: We have observed a previously undescribed stepwise oxidation of mono- and few layer suspended graphene by silver nanoparticles in situ at subnanometer scale in an environmental transmission electron microscope. Over the range of 600-850 K, we observe crystallographically oriented channelling with rates in the range 0.01-1 nm/s and calculate an activation energy of 0.557 ± 0.016 eV. We present a discrete statistical model for this process and discuss the implications for accurate nanoscale patterning of nanoscale systems.
authors.affiliation: DTU Nanotech, Kgs. Lyngby, Denmark. tim.booth@nanotech.dtu.dk
authors.forename: Tim J
authors.initials: TJ
authors.lastname: Booth
authors.forename: Filippo
authors.initials: F
authors.lastname: Pizzocchero
authors.forename: Henrik
authors.initials: H
authors.lastname: Andersen
authors.forename: Thomas W
authors.initials: TW
authors.lastname: Hansen
authors.forename: Jakob B
authors.initials: JB
authors.lastname: Wagner
authors.forename: Joerg R
authors.initials: JR
authors.lastname: Jinschek
authors.forename: Rafal E
authors.initials: RE
authors.lastname: Dunin-Borkowski
authors.forename: Ole
authors.initials: O
authors.lastname: Hansen
authors.forename: Peter
authors.initials: P
authors.lastname: Bøggild
mesh_terms: D006108:Graphite / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D036103:Nanotechnology; D010084:Oxidation-Reduction; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties; D013816:Thermodynamics
chemical_list: D012834:Silver; D006108:Graphite