Low temperature growth of ultra-high mass density carbon nanotube forests on conductive supports
- Department of Engineering, University of Cambridge, Cambridge CB3 0FA (United Kingdom)
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 0FS (United Kingdom)
- 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, Journal Name: Applied Physics Letters Journal Issue: 7 Vol. 103; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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