@article{120516,
  author = {L. Yan and C. Punckt and I.A. Aksay and W. Mertin and G. Bacher},
  title = {Local Voltage Drop in a Single Functionalized Graphene Sheet Characterized by Kelvin Probe Force Microscopy},
  abstract = { We studied the local voltage drop in functionalized graphene sheets of sub mu m size under external bias conditions by Kelvin probe force microscopy. Using this noninvasive experimental approach, we measured ohmic current-voltage characteristics and an intrinsic conductivity of about 3.7 x 10(5) S/m corresponding to a sheet resistance of 2.7 k Omega/sq under ambient conditions for graphene produced via thermal reduction of graphite oxide. The contact resistivity between functionalized graphene and metal electrode was found. to be \<6.3 x 10(-7) Omega cm(2). },
  year = {2011},
  journal = {Nano Letters},
  volume = {11},
  pages = {3543-3549},
  month = {09/2011},
  isbn = {1530-6984},
  language = {eng},
}