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Title: Direct preparation of carbon nanotube intramolecular junctions on structured substrates
Authors: An, Jianing
Zhan, Zhaoyao
Sun, Gengzhi
Mohan, Hari Krishna Salila Vijayalal
Zhou, Jinyuan
Kim, Young-Jin
Zheng, Lianxi
Keywords: Single-walled Carbon Nanotube
Intramolecular Junctions
DRNTU::Engineering::Mechanical engineering
Issue Date: 2016
Source: An, J., Zhan, Z., Sun, G., Mohan, H. K. S. V., Zhou, J., Kim, Y.-J., & Zheng, L. (2016). Direct preparation of carbon nanotube intramolecular junctions on structured substrates. Scientific Reports, 6, 38032-. doi:10.1038/srep38032
Series/Report no.: Scientific Reports
Abstract: Leveraging the unique properties of single-walled carbon nanotube (SWNT) intramolecular junctions (IMJs) in innovative nanodevices and next-generation nanoelectronics requires controllable, repeatable, and large-scale preparation, together with rapid identification and comprehensive characterization of such structures. Here we demonstrate SWNT IMJs through directly growing ultralong SWNTs on trenched substrates. It is found that the trench configurations introduce axial strain in partially suspended nanotubes, and promote bending deformation in the vicinity of the trench edges. As a result, the lattice and electronic structure of the nanotubes can be locally modified, to form IMJs in the deformation regions. The trench patterns also enable pre-defining the formation locations of SWNT IMJs, facilitating the rapid identification. Elaborate Raman characterization has verified the formation of SWNT IMJs and identified their types. Rectifying behavior has been observed by electrical measurements on the as-prepared semiconducting-semiconducting (S-S) junction.
DOI: 10.1038/srep38032
Rights: © 2016 The Authors (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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