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.
| Original language | English |
|---|---|
| Pages (from-to) | 703-708 |
| Number of pages | 6 |
| Journal | Nano Letters |
| Volume | 2 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2002 Jul 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Materials Science(all)
Cite this
Synthesis of Ultralong and High Percentage of Semiconducting Single-walled Carbon Nanotubes. / Kim, Woong; Choi, Hee Cheul; Shim, Moonsub; Li, Yiming; Wang, Dunwei; Dai, Hongjie.
In: Nano Letters, Vol. 2, No. 7, 01.07.2002, p. 703-708.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis of Ultralong and High Percentage of Semiconducting Single-walled Carbon Nanotubes
AU - Kim, Woong
AU - Choi, Hee Cheul
AU - Shim, Moonsub
AU - Li, Yiming
AU - Wang, Dunwei
AU - Dai, Hongjie
PY - 2002/7/1
Y1 - 2002/7/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0001743043&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001743043&partnerID=8YFLogxK
U2 - 10.1021/nl025602q
DO - 10.1021/nl025602q
M3 - Article
AN - SCOPUS:0001743043
VL - 2
SP - 703
EP - 708
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 7
ER -