title: A Robust Highly Aligned DNA Nanowire Array-Enabled Lithography for Graphene Nanoribbon Transistors.
abstract: Because of its excellent charge carrier mobility at the Dirac point, graphene possesses exceptional properties for high-performance devices. Of particular interest is the potential use of graphene nanoribbons or graphene nanomesh for field-effect transistors. Herein, highly aligned DNA nanowire arrays were crafted by flow-assisted self-assembly of a drop of DNA aqueous solution on a flat polymer substrate. Subsequently, they were exploited as "ink" and transfer-printed on chemical vapor deposited (CVD)-grown graphene substrate. The oriented DNA nanowires served as the lithographic resist for selective removal of graphene, forming highly aligned graphene nanoribbons. Intriguingly, these graphene nanoribbons can be readily produced over a large area (i.e., millimeter scale) with a high degree of feature-size controllability and a low level of defects, rendering the fabrication of flexible two terminal devices and field-effect transistors.
authors.forename: Seok Hee
authors.initials: SH
authors.lastname: Kang
authors.affiliation: Department of Materials Engineering, Korea Aerospace University , Goyang 412-791, Republic of Korea.
authors.forename: Wan Sik
authors.initials: WS
authors.lastname: Hwang
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Zhiqun
authors.initials: Z
authors.lastname: Lin
authors.forename: Se Hun
authors.initials: SH
authors.lastname: Kwon
authors.forename: Suck Won
authors.initials: SW
authors.lastname: Hong
mesh_terms: D004247:DNA / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D049329:Nanostructures; D053770:Nanowires
chemical_list: D006108:Graphite; D004247:DNA
keywords: DNA nanowire array-enabled lithography; graphene nanoribbon; self-assembly; transistor