title: Controlled folding of graphene: GraFold printing.
abstract: We have used elastomeric stamps with periodically varying adhesive properties to introduce structure and print folded graphene films. The structure of the induced folds is investigated with scanning probe techniques, high-resolution electron-microscopy, and tip-enhanced Raman spectroscopy. Furthermore, a finite element model is developed to show the fold formation process. Terahertz spectroscopy reveals induced anisotropy of carrier mobility along, and perpendicular to, the graphene folds. Graphene fold printing is a new technique which allows for significant modification of the properties of 2D materials without damaging or chemically modifying them.
authors.affiliation: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials BioEngineering Research Centre (AMBER), and ∇School of Chemistry, Trinity College , Dublin 2, Ireland.
authors.forename: Toby
authors.initials: T
authors.lastname: Hallam
authors.forename: Amir
authors.initials: A
authors.lastname: Shakouri
authors.forename: Emanuele
authors.initials: E
authors.lastname: Poliani
authors.forename: Aidan P
authors.initials: AP
authors.lastname: Rooney
authors.forename: Ivan
authors.initials: I
authors.lastname: Ivanov
authors.forename: Alexis
authors.initials: A
authors.lastname: Potie
authors.forename: Hayden K
authors.initials: HK
authors.lastname: Taylor
authors.forename: Mischa
authors.initials: M
authors.lastname: Bonn
authors.forename: Dmitry
authors.initials: D
authors.lastname: Turchinovich
authors.forename: Sarah J
authors.initials: SJ
authors.lastname: Haigh
authors.forename: Janina
authors.initials: J
authors.lastname: Maultzsch
authors.forename: Georg S
authors.initials: GS
authors.lastname: Duesberg
keywords: Graphene; contact printing; folding; nanotechnology; patterning; spectroscopy