Nanoscale tunable reduction of graphene oxide for graphene electronics.
The reduced form of graphene oxide (GO) is an attractive alternative to graphene for producing large-scale flexible conductors and for creating devices that require an electronic gap. We report on a means to tune the topographical and electrical properties of reduced GO (rGO) with nanoscopic resolution by local thermal reduction of GO with a heated atomic force microscope tip. The rGO regions are up to four orders of magnitude more conductive than pristine GO. No sign of tip wear or sample tearing was observed. Variably conductive nanoribbons with dimensions down to 12 nanometers could be produced in oxidized epitaxial graphene films in a single step that is clean, rapid, and reliable.
Wei
Zhongqing
Z
Chemistry Division, U.S. Naval Research Laboratory, Code 6177, Washington, DC 20375, USA.
Wang
Debin
D
Kim
Suenne
S
Kim
Soo-Young
SY
Hu
Yike
Y
Yakes
Michael K
MK
Laracuente
Arnaldo R
AR
Dai
Zhenting
Z
Marder
Seth R
SR
Berger
Claire
C
King
William P
WP
de Heer
Walter A
WA
Sheehan
Paul E
PE
Riedo
Elisa
E