title: Temperature-mediated growth of single-walled carbon-nanotube intramolecular junctions.
abstract: 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. 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, 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.
authors: State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, China.
authors: Yagang
authors: Y
authors: Yao
authors: Qingwen
authors: Q
authors: Li
authors: Jin
authors: J
authors: Zhang
authors: Ran
authors: R
authors: Liu
authors: Liying
authors: L
authors: Jiao
authors: Yuntian T
authors: YT
authors: Zhu
authors: Zhongfan
authors: Z
authors: Liu