title: Growing Carbon Nanotubes from Both Sides of Graphene.
abstract: The design and synthesis of hybrid structures between graphene and carbon nanotubes is an intriguing topic in the field of carbon nanomaterials. Here the synthesis of vertically aligned CNT carpets underneath graphene and from both sides of graphene is described with continuous ordering over a large area. Scanning electron microscopy and Raman spectroscopic characterizations show that CNT carpets grow underneath graphene through a base-growth mechanism, and grow on top of graphene through a tip-growth mechanism. Good electrical contact is observed from the top CNT carpets, through the graphene layer, to the bottom CNT carpets. This sandwich-like CNT/graphene/CNT hybrid structure could provide an approach to design and fabricate multilayered graphene/CNTs materials, as well as potential applications in the fields of nanomanufacturing and energy storage.
authors.affiliation: Department of Physics, School of Science, Lanzhou University of Technology , Lanzhou 730050, Gansu China.
authors.forename: Jinlong
authors.initials: J
authors.lastname: Jiang
authors.forename: Yilun
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Physical Science and Technology, Lanzhou University , Lanzhou 730000, Gansu China.
authors.forename: Caitian
authors.initials: C
authors.lastname: Gao
authors.forename: Nam Dong
authors.initials: ND
authors.lastname: Kim
authors.forename: Xiujun
authors.initials: X
authors.lastname: Fan
authors.forename: Gunuk
authors.initials: G
authors.lastname: Wang
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Peng
authors.forename: Robert H
authors.initials: RH
authors.lastname: Hauge
authors.forename: James M
authors.initials: JM
authors.lastname: Tour
keywords: carbon nanotubes; graphene; hybrid structure; ohmic contact; vertically aligned