Synthesis of ultralong and high percentage of semiconducting single-walled carbon nanotubes
SCIE
SCOPUS
- Title
- Synthesis of ultralong and high percentage of semiconducting single-walled carbon nanotubes
- Authors
- Kim, W; Choi, HC; Shim, M; Li, YM; Wang, DW; Dai, HJ
- Date Issued
- 2002-07
- Publisher
- AMER CHEMICAL SOC
- Abstract
- Two main results are reported here for single-walled carbon nanotubes (SWNTs) synthesized from well-controlled isolated catalytic Fe2O3 nanoparticles. The first is patterned growth of ultralong SWNTs (lengths up to 0.6 millimeters) by using a mixed methane and ethylene carbon source in chemical vapor deposition (CVD). Interesting loop and closed ring structures similar to those of fullerene "crop circles" are observed on these as-grown ultralong tubes. Second, surveying the electronic properties of individual SWNTs by transport measurements reveals that approximately 70% of individual SWNTs grown from isolated nanoparticles are semiconductors exhibiting field effect transistor (FET) characteristics. The distribution of CVD-grown SWNT chirality is elucidated for the first time, and implications to array-based nanotube electronics and sensors are discussed.
- Keywords
- ELECTRONIC-STRUCTURE; GROWTH; SENSORS; ROPES
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16927
- DOI
- 10.1021/NL025602Q
- ISSN
- 1530-6984
- Article Type
- Article
- Citation
- NANO LETTERS, vol. 2, no. 7, page. 703 - 708, 2002-07
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- There are no files associated with this item.
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