Abstract
Carbon nanotube is a promising material for thermal-management of micro devices because of its high intrinsic thermal conductivity. However, most bulk nanotubes show very low thermal conductivity due to the high thermal contact resistance. There are very few reliable experimental data for the contact issue of nanotubes. This paper uses three kinds of multi-walled carbon nanotubes; pristine, thermally-oxidized, and acidized nanotube. Each has unique nanoscale structure in their outermost surface. We measured thermal conductivity of their pellets and simultaneously conducted computational analysis treating random network model of spherocylinders. By comparing both results, thermal contact resistances between nanotubes are estimated and the effect of defected structure is discussed. The reliability of our method is also successfully confirmed compared with reported data using individual nanotubes.
| Original language | English |
|---|---|
| Title of host publication | ASME 2012 Heat Transfer Summer Conf. Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012 |
| Pages | 173-177 |
| Number of pages | 5 |
| Volume | 1 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
| Event | ASME 2012 Heat Transfer Summer Conference Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012 - Rio Grande, Puerto Rico Duration: Jul 8 2012 → Jul 12 2012 |
Other
| Other | ASME 2012 Heat Transfer Summer Conference Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012 |
|---|---|
| Country | Puerto Rico |
| City | Rio Grande |
| Period | 7/8/12 → 7/12/12 |
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ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
- Control and Systems Engineering
- Electrical and Electronic Engineering
- Mechanical Engineering
- Condensed Matter Physics
Cite this
Effect of nanoscale structure on thermal contact resistance of carbon nanotubes. / Yamada, Yutaka; Nishiyama, Takashi; Ikuta, Tatsuya; Takahashi, Koji.
ASME 2012 Heat Transfer Summer Conf. Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012. Vol. 1 2012. p. 173-177.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Effect of nanoscale structure on thermal contact resistance of carbon nanotubes
AU - Yamada, Yutaka
AU - Nishiyama, Takashi
AU - Ikuta, Tatsuya
AU - Takahashi, Koji
PY - 2012
Y1 - 2012
N2 - Carbon nanotube is a promising material for thermal-management of micro devices because of its high intrinsic thermal conductivity. However, most bulk nanotubes show very low thermal conductivity due to the high thermal contact resistance. There are very few reliable experimental data for the contact issue of nanotubes. This paper uses three kinds of multi-walled carbon nanotubes; pristine, thermally-oxidized, and acidized nanotube. Each has unique nanoscale structure in their outermost surface. We measured thermal conductivity of their pellets and simultaneously conducted computational analysis treating random network model of spherocylinders. By comparing both results, thermal contact resistances between nanotubes are estimated and the effect of defected structure is discussed. The reliability of our method is also successfully confirmed compared with reported data using individual nanotubes.
AB - Carbon nanotube is a promising material for thermal-management of micro devices because of its high intrinsic thermal conductivity. However, most bulk nanotubes show very low thermal conductivity due to the high thermal contact resistance. There are very few reliable experimental data for the contact issue of nanotubes. This paper uses three kinds of multi-walled carbon nanotubes; pristine, thermally-oxidized, and acidized nanotube. Each has unique nanoscale structure in their outermost surface. We measured thermal conductivity of their pellets and simultaneously conducted computational analysis treating random network model of spherocylinders. By comparing both results, thermal contact resistances between nanotubes are estimated and the effect of defected structure is discussed. The reliability of our method is also successfully confirmed compared with reported data using individual nanotubes.
UR - http://www.scopus.com/inward/record.url?scp=84892659417&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84892659417&partnerID=8YFLogxK
U2 - 10.1115/HT2012-58203
DO - 10.1115/HT2012-58203
M3 - Conference contribution
AN - SCOPUS:84892659417
SN - 9780791844779
VL - 1
SP - 173
EP - 177
BT - ASME 2012 Heat Transfer Summer Conf. Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012
ER -