Model of carbon nanotube growth through chemical vapor deposition |
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| Institution: | 1. Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, USA;2. The Center for Applied Energy Research, University of Kentucky, Lexington, KY 40506, USA;3. Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506, USA;1. Beijing National Laboratory of Molecular Sciences, Key Laboratory for the Physics and Chemistry of Nanodevices, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;2. Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China;1. Faculty of Pharmacy, University of Central Punjab, Lahore, Pakistan;2. University Lyon-1, CNRS, UMR 5007, LAGEP-CPE, 43 bd 11 November 1918, F-69622 Villeurbanne, France;1. Advanced Technology Institute, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom;2. Department of Electrical and Electronic Engineering, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom |
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| Abstract: | This Letter outlines a model to account for the catalyzed growth of nanotubes by chemical vapor deposition. It proposes that their formation and growth is an extension of other known processes in which graphitic structures form over metal surfaces at moderate temperatures through the decomposition of organic precursors. Importantly, the model also states that the form of carbon produced depends on the physical dimensions of the catalyzed reactions. Experimental data are presented that correlate nanotube diameters to the size of the catalyst particles. Nanotube stability as a function of nanotube type, length and diameter are also investigated through theoretical calculations. |
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