Determination of the stacking order of curved few-layered graphene systems

Takuya Hayashi; Hiroyuki Muramatsu; Daisuke Shimamoto; Kazunori Fujisawa; Tomohiro Tojo; Yoshitaka Muramoto; Takuya Yokomae; Toru Asaoka; Yoong Ahm Kim; Mauricio Terrones; Morinobu Endo

doi:10.1039/C2NR30883E

Determination of the stacking order of curved few-layered graphene systems

Takuya Hayashi,*^ab Hiroyuki Muramatsu,†^b Daisuke Shimamoto,‡^a Kazunori Fujisawa,^a Tomohiro Tojo,^a Yoshitaka Muramoto,^a Takuya Yokomae,^a Toru Asaoka,^a Yoong Ahm Kim,^ab Mauricio Terrones^bc and Morinobu Endo^b

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* Corresponding authors

^a Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
E-mail: hayashi@endomoribu.shinshu-u.ac.jp

^b Research Center for Exotic Nanocarbons (JST), Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan

^c Department of Physics, Department of Materials Science and Engineering & Materials Research Institute, The Pennsylvania State University, 104 Davey Lab., University Park, PA 16802-6300, USA

Abstract

We report a facile method to efficiently visualize the atomic carbon network of curved few-layered graphitic systems including folded bi-layer graphene, nanoribbon edges and multi-walled carbon nanotubes (straight and bent), via the processing of aberration-corrected high-resolution transmission electron microscopy (AC-HRTEM) images. This technique is also able to atomically resolve the structure of overlapping graphene layers with different orientations, thus enabling us to determine the stacking order of multiple graphene layers. To the best of our knowledge, we are the first to identify the stacking order of a misoriented 4-layer closed-edge graphene and a metal–semiconductor double-walled carbon nanotube junction.

Nanoscale

Determination of the stacking order of curved few-layered graphene systems

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