title: Friction anisotropy-driven domain imaging on exfoliated monolayer graphene.
abstract: Graphene produced by exfoliation has not been able to provide an ideal graphene with performance comparable to that predicted by theory, and structural and/or electronic defects have been proposed as one cause of reduced performance. We report the observation of domains on exfoliated monolayer graphene that differ by their friction characteristics, as measured by friction force microscopy. Angle-dependent scanning revealed friction anisotropy with a periodicity of 180° on each friction domain. The friction anisotropy decreased as the applied load increased. We propose that the domains arise from ripple distortions that give rise to anisotropic friction in each domain as a result of the anisotropic puckering of the graphene.
authors: Division of Quantum Phases and Devices, Department of Physics, Konkuk University, Seoul 143-701, Korea.
authors: Jin Sik
authors: JS
authors: Choi
authors: Jin-Soo
authors: JS
authors: Kim
authors: Ik-Su
authors: IS
authors: Byun
authors: Duk Hyun
authors: DH
authors: Lee
authors: Mi Jung
authors: MJ
authors: Lee
authors: Bae Ho
authors: BH
authors: Park
authors: Changgu
authors: C
authors: Lee
authors: Duhee
authors: D
authors: Yoon
authors: Hyeonsik
authors: H
authors: Cheong
authors: Ki Ho
authors: KH
authors: Lee
authors: Young-Woo
authors: YW
authors: Son
authors: Jeong Young
authors: JY
authors: Park
authors: Miquel
authors: M
authors: Salmeron