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

Journal Article · Mon Aug 12 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4818619· OSTI ID:22218229

Sugime, Hisashi; Esconjauregui, Santiago; Yang, Junwei; D'Arsié, Lorenzo; Robertson, John ^[1]; Oliver, Rachel A. ^[2]; Bhardwaj, Sunil ^[3]; Cepek, Cinzia ^[3]

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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)

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.

• OSTI ID: 22218229
• Journal Information: Applied Physics Letters, Vol. 103, Issue 7; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
AGGLOMERATION
CARBON NANOTUBES
CATALYSTS
DENSITY
ELECTRIC CONDUCTIVITY
FABRICATION
X-RAY PHOTOELECTRON SPECTROSCOPY