Generation of Carbon Scrolls from Graphene films

ORAL

Abstract

Using a chemical process to delaminate graphene from HOPG, we are able to produce suspended graphene and n-graphene layer films (i.e., $n$GL\textbf{, }n=integer) in various organic solvents. The $n$GLs have lateral dimensions of several microns. We observe that in a matter of a few hours, the $n$GLs ``roll up'' on themselves to form scrolls. Here we present results of a study which investigates the role of the solvent in determining the characteristic time to ``roll up'' the $n$GL. Raman scattering, AFM and TEM is used to characterize the scrolls. A model will be presented to explain why the scrolling occurs.

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Authors

  • Humberto Guti\'errez

    Department of Physics, Pennsylvania State University, Department of Physics, Pennsylvania State University, University Park, PA 16802, U.S.A

  • Awnish Gupta

    Department of Physics, Pennsylvania State University

  • Qiujie Lu

    Department of Physics, The Pennsylvania State University, Department of Physics, Pennsylvania State University

  • Vincent H. Crespi

    The Penn State University, The Pennsylvania State University, Department of Physics, Pennsylvania State University, Penn State University, Department of Physics, Penn State University

  • Peter Eklund

    Department of Physics, Department of Material Sciences, Materials Research Institute, The Pennsylvania State University, Department of Physics, Pennsylvania State University, Department of Physics, Pennsylvania State University, University Park, PA 16802, U.S.A