title: Blown-Bubble Assembly and in Situ Fabrication of Sausage-like Graphene Nanotubes Containing Copper Nanoblocks.
abstract: We use a blown-bubble method to assemble Cu nanowires and in situ fabricate graphene-based one-dimensional heterostructures, including versatile sausage-like configurations consisting of multilayer graphene nanotubes (GNTs) filled by single or periodically arranged Cu nanoblocks (CuNBs). This is done by first assembling Cu nanowires among a polymer-based blown-bubble film (BBF) and then growing graphene onto the nanowire substrate using the polymer matrix as a solid carbon source by chemical-vapor deposition. The formation of sausage-like GNT@CuNB nanostructures is due to the partial melting and breaking of embedded Cu nanowires during graphene growth, which is uniquely related to our BBF process. We show that the GNT skin significantly slows the oxidation process of CuNBs compared with that of bare Cu nanowires, and the presence of stuffed CuNBs also reduces the linear resistance along the GNTs. The large-scale assembled graphene-based heterostructures achieved by our BBF method may have potential applications in heterojunction electronic devices and high-stability transparent conductive electrodes.
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, PR China.
authors.forename: Shiting
authors.initials: S
authors.lastname: Wu
authors.affiliation: National Center for Nanoscience and Technology , 11 Beiyitiao Street, Zhongguancun, Beijing 100190, PR China.
authors.forename: Long
authors.initials: L
authors.lastname: Yang
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, PR China.
authors.forename: Mingchu
authors.initials: M
authors.lastname: Zou
authors.affiliation: College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China.
authors.forename: Yanbing
authors.initials: Y
authors.lastname: Yang
authors.affiliation: National Center for Nanoscience and Technology , 11 Beiyitiao Street, Zhongguancun, Beijing 100190, PR China.
authors.forename: Mingde
authors.initials: M
authors.lastname: Du
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, PR China.
authors.forename: Wenjing
authors.initials: W
authors.lastname: Xu
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, PR China.
authors.forename: Liusi
authors.initials: L
authors.lastname: Yang
authors.affiliation: National Center for Nanoscience and Technology , 11 Beiyitiao Street, Zhongguancun, Beijing 100190, PR China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Fang
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, PR China.
authors.forename: Anyuan
authors.initials: A
authors.lastname: Cao
keywords: Blown-bubble assembly; Cu nanoblocks; graphene nanotube; graphene-based heterostructure; sausage-like nanostructure