Imaging Dynamics of Carbon Atoms in a Graphene Sheet

ORAL

Abstract

Using a transmission electron aberration--corrected microscope capable of simultaneous atomic spatial resolution and 1-second temporal resolution, we record the dynamics of carbon atoms surrounding a hole in a suspended, graphene sheet. As the hole grows, bonds rearrange and atoms are ejected by the electron beam. We study the mechanism of edge reconstruction and demonstrate the stability of the ``zigzag'' edge configuration both theoretically and by image analysis of the data. ~We discuss other phenomena from the movie such as pentaheptite edge reconstruction and defect-induced strain.

–

Authors

  • Alex Zettl

    University of California - Berkeley, Department of Physics, University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, Department of Physics and Center of Integrated Nanomechanical Systems, UC Berkeley, Physics Department, UC Berkeley and Materials Sciences Division, Lawrence Berkeley National Lab

  • \c{C}a\u{g}lar Girit

    University of California - Berkeley, Department of Physics, University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory

  • Jannik Meyer

    University of Ulm, Department of Physics, University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory

  • Rolf Erni

    National Center for Electron Microscopy, Lawrence Berkeley National Laboratory

  • Marta Rossell

    National Center for Electron Microscopy, Lawrence Berkeley National Laboratory

  • Christian Kisielowski

    National Center for Electron Microscopy, Lawrence Berkeley National Laboratory

  • Li Yang

    Department of Physics, University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory

  • Cheol-Hwan Park

    UC Berkeley, Department of Physics, University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, UC Berkeley and Lawrence Berkeley National Lab

  • Michael Crommie

    Department of Physics, University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California Berkeley, Lawrence Berkeley National Laboratory

  • Marvin L. Cohen

    UC Berkeley and Lawrence Berkeley National Laboratory, Department of Physics, University of California, Berkeley. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California, UC Berkeley, Department of Physics, University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, Department of Physics, University of California, Berkeley; Material Science Division, Lawrence Berkeley National Laboratory, Deptartment of Physics, University of California, Berkeley; Materials Science Division, Lawrence Berkeley National Laboratory, Department of Physics, University of California, Berkeley, and Materials Science Division, Lawrence Berkeley National Laboratory, Department of Physics, University of California at Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720

  • Steven G. Louie

    UC Berkeley and Lawrence Berkeley National Laboratory, Department of Physics, University of California, Berkeley. Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California, University of California at Berkeley and Lawrence Berkeley National Lab, University of California at Berkeley and Lawrence Berkeley National Laboratory, University of California, Berkeley and Lawrence Berkeley National Laboratory, UC Berkeley, Department of Physics, University of California, Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, UC Berkeley and Lawrence Berkeley National Lab, UC Berkeley and LBNL, Department of Physics, University of California, Berkeley, and Materials Science Division, Lawrence Berkeley National Laboratory, Dept. of Physics, University of California Berkeley and The Molecular Foundry, LBNL, Department of Physics, University of California at Berkeley and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720