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Title: Low temperature growth of ultra-high mass density carbon nanotube forests on conductive supports

We grow ultra-high mass density carbon nanotube forests at 450 °C on Ti-coated Cu supports using Co-Mo co-catalyst. X-ray photoelectron spectroscopy shows Mo strongly interacts with Ti and Co, suppressing both aggregation and lifting off of Co particles and, thus, promoting the root growth mechanism. The forests average a height of 0.38 μm and a mass density of 1.6 g cm{sup −3}. This mass density is the highest reported so far, even at higher temperatures or on insulators. The forests and Cu supports show ohmic conductivity (lowest resistance ∼22 kΩ), suggesting Co-Mo is useful for applications requiring forest growth on conductors.
Authors:
; ; ; ;  [1] ;  [2] ;  [3] ;  [4] ;  [3]
  1. Department of Engineering, University of Cambridge, Cambridge CB3 0FA (United Kingdom)
  2. Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 0FS (United Kingdom)
  3. Istituto Officina dei Materiali-CNR, Laboratorio TASC, Trieste I-34149 (Italy)
  4. (Italy)
Publication Date:
OSTI Identifier:
22218229
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 7; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; AGGLOMERATION; CARBON NANOTUBES; CATALYSTS; DENSITY; ELECTRIC CONDUCTIVITY; FABRICATION; X-RAY PHOTOELECTRON SPECTROSCOPY