Abstract
We grow dense carbon nanotube forests at 450 °C on Cu support using Co/Al/Mo multilayer catalyst. As a partial barrier layer for the diffusion of Co into Mo, we apply very thin Al layer with the nominal thickness of 0.50 nm between Co and Mo. This Al layer plays an important role in the growth of dense CNT forests, partially preventing the Co-Mo interaction. The forests have an average height of ∼300 nm and a mass density of 1.2 g cm-3 with tubes exhibiting extremely narrow inner spacing. An ohmic behavior is confirmed between the forest and Cu support with the lowest resistance of ∼8 kΩ. The forest shows a high thermal effusivity of 1840 J s-0.5 m-2 K-1, and a thermal conductivity of 4.0 J s-1 m-1 K-1, suggesting that these forests are useful for heat dissipation devices. (Figure Presented).
| Original language | English |
|---|---|
| Pages (from-to) | 16819-16827 |
| Number of pages | 9 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 7 |
| Issue number | 30 |
| DOIs | |
| Publication status | Published - 2015 Aug 5 |
| Externally published | Yes |
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Keywords
- catalyst nanoparticles
- chemical vapor deposition
- cocatalyst
- low-temperature growth
- sputtering
- thermal conductivity
- thermal effusivity
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Low-Temperature Growth of Carbon Nanotube Forests Consisting of Tubes with Narrow Inner Spacing Using Co/Al/Mo Catalyst on Conductive Supports. / Sugime, Hisashi; Esconjauregui, Santiago; D'Arsié, Lorenzo; Yang, Junwei; Robertson, Alex W.; Oliver, Rachel A.; Bhardwaj, Sunil; Cepek, Cinzia; Robertson, John.
In: ACS Applied Materials and Interfaces, Vol. 7, No. 30, 05.08.2015, p. 16819-16827.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Low-Temperature Growth of Carbon Nanotube Forests Consisting of Tubes with Narrow Inner Spacing Using Co/Al/Mo Catalyst on Conductive Supports
AU - Sugime, Hisashi
AU - Esconjauregui, Santiago
AU - D'Arsié, Lorenzo
AU - Yang, Junwei
AU - Robertson, Alex W.
AU - Oliver, Rachel A.
AU - Bhardwaj, Sunil
AU - Cepek, Cinzia
AU - Robertson, John
PY - 2015/8/5
Y1 - 2015/8/5
N2 - We grow dense carbon nanotube forests at 450 °C on Cu support using Co/Al/Mo multilayer catalyst. As a partial barrier layer for the diffusion of Co into Mo, we apply very thin Al layer with the nominal thickness of 0.50 nm between Co and Mo. This Al layer plays an important role in the growth of dense CNT forests, partially preventing the Co-Mo interaction. The forests have an average height of ∼300 nm and a mass density of 1.2 g cm-3 with tubes exhibiting extremely narrow inner spacing. An ohmic behavior is confirmed between the forest and Cu support with the lowest resistance of ∼8 kΩ. The forest shows a high thermal effusivity of 1840 J s-0.5 m-2 K-1, and a thermal conductivity of 4.0 J s-1 m-1 K-1, suggesting that these forests are useful for heat dissipation devices. (Figure Presented).
AB - We grow dense carbon nanotube forests at 450 °C on Cu support using Co/Al/Mo multilayer catalyst. As a partial barrier layer for the diffusion of Co into Mo, we apply very thin Al layer with the nominal thickness of 0.50 nm between Co and Mo. This Al layer plays an important role in the growth of dense CNT forests, partially preventing the Co-Mo interaction. The forests have an average height of ∼300 nm and a mass density of 1.2 g cm-3 with tubes exhibiting extremely narrow inner spacing. An ohmic behavior is confirmed between the forest and Cu support with the lowest resistance of ∼8 kΩ. The forest shows a high thermal effusivity of 1840 J s-0.5 m-2 K-1, and a thermal conductivity of 4.0 J s-1 m-1 K-1, suggesting that these forests are useful for heat dissipation devices. (Figure Presented).
KW - catalyst nanoparticles
KW - chemical vapor deposition
KW - cocatalyst
KW - low-temperature growth
KW - sputtering
KW - thermal conductivity
KW - thermal effusivity
UR - http://www.scopus.com/inward/record.url?scp=84938592942&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84938592942&partnerID=8YFLogxK
U2 - 10.1021/acsami.5b04846
DO - 10.1021/acsami.5b04846
M3 - Article
AN - SCOPUS:84938592942
VL - 7
SP - 16819
EP - 16827
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 30
ER -