title: Graphene Oxide Glue-Electrode for Fabrication of Vertical, Elastic, Conductive Columns.
abstract: Graphene has a planar atomic structure with high flexibility and might be used as ultrathin conductive glues or adhesion layers in electronics and other applications. Here, we show that graphene oxide (GO) sheets condensed from solution can act as a pure, thin-layer, nonpenetrating glue for fabrication of vertical architectures anchored on rigid and flexible substrates. Carbon nanotube (CNT) sponges are used as a porous template to make polymer-reinforced composite columns, to achieve both high conductivity and elastic behavior. These vertical columns are fixed on a substrate by reduced GO sheets as an electrode and exhibit reversible resistance change under large-strain compression for many cycles. Similar to the CNT gecko feet, we disclose high adhesion forces at the CNT-GO and GO-SiO2interfaces by mechanical tests and theoretical calculation. Three-dimensional CNT, graphene, and nanowire networks with our GO glue-electrodes have potential applications as energy storage electrodes, flexible sensors, functional composites, and vertical interconnects.
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Liusi
authors.initials: L
authors.lastname: Yang
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Mingchu
authors.initials: M
authors.lastname: Zou
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Shiting
authors.initials: S
authors.lastname: Wu
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. 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, P. R. China.
authors.forename: Huaisheng
authors.initials: H
authors.lastname: Wu
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, P. R. China.
authors.forename: Anyuan
authors.identifier: 0000-0002-2282-716X
authors.initials: A
authors.lastname: Cao
keywords: carbon nanotube sponge; composite; elastic conductive column; glue-electrode; graphene oxide