@article{653b99b76deb4a878363972e23f2fa38,
title = "Hierarchy of Electronic Properties of Chemically Derived and Pristine Graphene Probed by Microwave Imaging",
abstract = "Local electrical imaging using microwave impedance microscope is performed on graphene in different modalities, yielding a rich hierarchy of the local conductivity. The low-conductivity graphite oxide and its derivatives show significant electronic inhomogeneity. For the conductive chemical graphene, the residual defects lead to a systematic reduction of the microwave signals. In contrast, the signals on pristine graphene agree well with a lumped-element circuit model. The local impedance information can also be used to verify the electrical contact between overlapped graphene pieces. {\textcopyright} 2009 American Chemical Society.",
author = "Worasom Kundhikanjana and Keji Lai and Hailiang Wang and Hongjie Dai and Kelly, {Michael A.} and Zhi-xun Shen",
note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-F1-033-02 Acknowledgements: We thank K. Todd for the assistance with pristine graphene, D. Goldhaber-Gordon for useful discussions, and C. Buenviaje-Conggins for the instrumental advice. The research is supported by Center of Probing the Nanoscale (CPN), Stanford University, gift grants from Agilent Technologies, Inc., and DOE Contract DE-FG03-01ER45929-A001. This publication is also based on work supported by Award No. KUS-F1-033-02, made by King Abdullah University of Science and Technology (KAUST) under the global research partnership (GRP) program. CPN is an NSF NSEC, NSF Grant No. PHY-0425897. The work on graphene synthesis is supported by MARCO-MSD, Intel, and ONR. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",
year = "2009",
month = nov,
day = "11",
doi = "10.1021/nl901949z",
language = "English (US)",
volume = "9",
pages = "3762--3765",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "11",
}