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Controlled Growth of Y-Junction Nanotubes Using Ti-Doped Vapor Catalyst

Gothard, N. and Daraio, C. and Gaillard, J. and Zidan, R. and Jin, S. and Rao, A. M. (2004) Controlled Growth of Y-Junction Nanotubes Using Ti-Doped Vapor Catalyst. Nano Letters, 4 (2). pp. 213-217. ISSN 1530-6984. doi:10.1021/nl0349294.

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We demonstrate a bulk process for the synthesis of Y-junction carbon nanotubes using Ti-doped Fe catalysts. It is shown that the nanotube branching can be induced or stopped at will by tuning the Ti composition in the catalyst particle that seeds the growth of nanotubes. Detailed electron microscopic studies suggest that the mechanism for the observed Y-junction formation is mediated via catalyst particle attachment on the walls of a growing MWNT, from which the branching nanotubes nucleate and grow. By controlling the Ti concentration in the precursor, cascading Y-junction series as well as quadruple junctions have been successfully synthesized, offering the possibility for interesting device applications. The simplicity and controllability of such an in-situ Y-junction fabrication technique make it an excellent source of ready-made networks for potential nanoscale devices.

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Daraio, C.0000-0001-5296-4440
Additional Information:© 2004 American Chemical Society. Received October 23, 2003. Publication Date (Web): January 7, 2004. This research was supported in part by the following grants: NSF NIRT 0304019, NSF 0132573, and NSF ERC EEC-9731680.
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Issue or Number:2
Record Number:CaltechAUTHORS:20161004-090509158
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Official Citation:Controlled Growth of Y-Junction Nanotubes Using Ti-Doped Vapor Catalyst N. Gothard, C. Daraio, J. Gaillard, R. Zidan, S. Jin, and, and A. M. Rao, Nano Letters 2004 4 (2), 213-217 DOI: 10.1021/nl0349294
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70796
Deposited By: Tony Diaz
Deposited On:04 Oct 2016 18:32
Last Modified:11 Nov 2021 04:34

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