Selective synthesis of double helices of carbon nanotube bundles grown on treated metallic substrates

Authors

  • Felipe Cervantes-Sodi,

    Corresponding author
    1. Departamento de Física y Matemáticas, Universidad Iberoamericana, Prolongación Paseo de la Reforma 880, Lomas de Santa Fe, México, D.F. 01219, Mexico
    • Phone: +52 55 5950 4275, Fax: + 52 55 5950 4284
    Search for more papers by this author
  • Agustín Íñiguez-Rábago,

    1. Departamento de Física y Matemáticas, Universidad Iberoamericana, Prolongación Paseo de la Reforma 880, Lomas de Santa Fe, México, D.F. 01219, Mexico
    Search for more papers by this author
  • Samuel Rosas-Meléndez,

    1. Departamento de Física y Matemáticas, Universidad Iberoamericana, Prolongación Paseo de la Reforma 880, Lomas de Santa Fe, México, D.F. 01219, Mexico
    Search for more papers by this author
  • Mónica Ballesteros-Villarreal,

    1. Departamento de Física y Matemáticas, Universidad Iberoamericana, Prolongación Paseo de la Reforma 880, Lomas de Santa Fe, México, D.F. 01219, Mexico
    Search for more papers by this author
  • Juan J. Vilatela,

    1. IMDEA Materials Institute, E.T.S. de Ingenieros de Caminos, Profesor Aranguren, Madrid 28040, Spain
    Search for more papers by this author
  • Lucio G. Reyes-Gutiérrez,

    1. Ingeniería Industrial, Grupo JUMEX, Km. 12.5 Ant. Carretera México Pachuca, Xalostoc, Ecatepec de Morelos, Estado de México 55340, Mexico
    Search for more papers by this author
  • Eduardo Palacios,

    1. Lab. de Microscopía Electrónica de Ultra Alta Resolución, Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, San Bartolo Atepehuacán, México, D.F. 07730, Mexico
    Search for more papers by this author
  • Mauricio Terrones,

    1. Department of Physics, Department of Materials Science and Engineering & Materials Research Institute, The Pennsylvania State University, University Park, PA 16802-6300, USA
    2. Research Center for Exotic Nanocarbons (JST), Shinshu University, Wakasato 4-17-1, Nagano 380-8553, Japan
    Search for more papers by this author
  • José A. Jiménez-Rodríguez

    1. Ingeniería Industrial, Grupo JUMEX, Km. 12.5 Ant. Carretera México Pachuca, Xalostoc, Ecatepec de Morelos, Estado de México 55340, Mexico
    Search for more papers by this author

Abstract

Double-helix microstructures consisting of two parallel strands of hundreds of multi-walled carbon nanotubes (MWCNTs) have been synthesized by chemical vapour deposition of ferrocene/toluene vapours on metal substrates. Growth of coiled carbon nanostructures with site selectivity is achieved by varying the duration of thermochemical pretreatment to deposit a layer of SiOx on the metallic substrate. Production of multibranched structures of MWCNTs converging in SiOx microstructure is also reported.

original image

In the abstract figure, panel (a) shows a coloured micrograph of a typical double-helix coiled microstructure of MWCNTs grown on SiOx covered steel substrate. Green and blue show each of the two individual strands of MWCNTs. Panel (b) is an amplification of a SiOx microparticle (white) on the tip of the double-stranded coil (green and blue). The microparticle guides the collective growth of hundreds of MWCNTs to form the coiled structure.

Ancillary