Abstract
We studied patterning of metal nanoparticle catalyst on sapphire (α-Al 2O 3) substrates to grow horizontally-aligned single-walled carbon nanotubes (SWNTs) from defined positions. Various modifications of sapphire surface were investigated for effective adsorption of iron oxide nanoparticles. We found that phosphoric acids bind to sapphire surface and enhance the adsorption of the nanoparticles. This surface modification enabled effective patterning of nanoparticle via electron beam lithography. The small nanoparticles with a mean diameter of 5 nm tended to diffuse at high temperature during the nanotube growth, while the large particles with 12 nm mean diameter mostly stayed at the same position giving aligned SWNTs grown from the catalyst pattern.
| Original language | English |
|---|---|
| Pages (from-to) | 3867-3872 |
| Number of pages | 6 |
| Journal | Journal of nanoscience and nanotechnology |
| Volume | 10 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 1 2010 |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Chemistry(all)
- Biomedical Engineering
- Materials Science(all)
- Condensed Matter Physics
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Effective patterning of metal nanoparticles on sapphire surface for aligned growth of single-walled carbon nanotubes. / Ago, Hiroki; Ohdo, Ryota; Tsuji, Masaharu; Ikuta, Tatsuya; Takahashi, Koji.
In: Journal of nanoscience and nanotechnology, Vol. 10, No. 6, 01.06.2010, p. 3867-3872.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Effective patterning of metal nanoparticles on sapphire surface for aligned growth of single-walled carbon nanotubes
AU - Ago, Hiroki
AU - Ohdo, Ryota
AU - Tsuji, Masaharu
AU - Ikuta, Tatsuya
AU - Takahashi, Koji
PY - 2010/6/1
Y1 - 2010/6/1
N2 - We studied patterning of metal nanoparticle catalyst on sapphire (α-Al 2O 3) substrates to grow horizontally-aligned single-walled carbon nanotubes (SWNTs) from defined positions. Various modifications of sapphire surface were investigated for effective adsorption of iron oxide nanoparticles. We found that phosphoric acids bind to sapphire surface and enhance the adsorption of the nanoparticles. This surface modification enabled effective patterning of nanoparticle via electron beam lithography. The small nanoparticles with a mean diameter of 5 nm tended to diffuse at high temperature during the nanotube growth, while the large particles with 12 nm mean diameter mostly stayed at the same position giving aligned SWNTs grown from the catalyst pattern.
AB - We studied patterning of metal nanoparticle catalyst on sapphire (α-Al 2O 3) substrates to grow horizontally-aligned single-walled carbon nanotubes (SWNTs) from defined positions. Various modifications of sapphire surface were investigated for effective adsorption of iron oxide nanoparticles. We found that phosphoric acids bind to sapphire surface and enhance the adsorption of the nanoparticles. This surface modification enabled effective patterning of nanoparticle via electron beam lithography. The small nanoparticles with a mean diameter of 5 nm tended to diffuse at high temperature during the nanotube growth, while the large particles with 12 nm mean diameter mostly stayed at the same position giving aligned SWNTs grown from the catalyst pattern.
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UR - http://www.scopus.com/inward/citedby.url?scp=77955005709&partnerID=8YFLogxK
U2 - 10.1166/jnn.2010.1977
DO - 10.1166/jnn.2010.1977
M3 - Article
C2 - 20355381
AN - SCOPUS:77955005709
VL - 10
SP - 3867
EP - 3872
JO - Journal of Nanoscience and Nanotechnology
JF - Journal of Nanoscience and Nanotechnology
SN - 1533-4880
IS - 6
ER -