Nano Archive

Temperature-mediated growth of single-walled carbon-nanotube intramolecular junctions

Yao, Yagang and Li, Qingwen and Zhang, Jin and Liu, Ran and Jiao, Liying and Zhu, Yuntian T. and Liu, Zhongfan (2007) Temperature-mediated growth of single-walled carbon-nanotube intramolecular junctions. NATURE MATERIALS, 6 (4). pp. 283-286.

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Single-walled carbon nanotubes (SWNTs) possess superior electronic and physical properties that make them ideal candidates for making next-generation electronic circuits that break the size limitation of current silicon-based technology(1-4). The first critical step in making a full SWNT electronic circuit is to make SWNT intramolecular junctions in a controlled manner. Although SWNT intramolecular junctions have been grown by several methods(2,5-8), they only grew inadvertently in most cases. Here, we report well-controlled temperature-mediated growth of intramolecular junctions in SWNTs. Specifically, by changing the temperature during growth, we found that SWNTs systematically form intramolecular junctions. This was achieved by a consistent variation in the SWNT diameter and chirality with changing growth temperature even though the catalyst particles remained the same. These findings provide a potential approach for growing SWNT intramolecular junctions at desired locations, sizes and orientations, which are important for making SWNT electronic circuits.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nano objects
Physical Science > Nanoelectronics
Material Science > Nanostructured materials
ID Code:3098
Deposited By:Anuj Seth
Deposited On:13 Jan 2009 10:22
Last Modified:20 Jan 2009 14:36

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