Evaluation of thermal resistance of carbon nanotube film fabricated using an improved slope control of temperature profile growth

We have successfully improved the weight density of a 40-µm-long carbon nanotube (CNT) to 0.27 g/cm3 by improving the slope control of temperature profile (STEP) growth. It was found that the CNT growth is reaction-limited in the early stage of STEP growth and supply-limited in the late stage. We su...

Full description

Saved in:
Bibliographic Details
Published in:Japanese Journal of Applied Physics 2015-04, Vol.54 (4), p.45101-1-045101-4
Main Authors: Kawabata, Akio, Murakami, Tomo, Nihei, Mizuhisa, Yamabe, Kikuo, Yokoyama, Naoki
Format: Article
Language:English
Subjects:
Carbon nanotubes
Density
Heat transfer
Indium
Optimization
Raw materials
Slopes
Temperature profiles
Thermal resistance
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have successfully improved the weight density of a 40-µm-long carbon nanotube (CNT) to 0.27 g/cm3 by improving the slope control of temperature profile (STEP) growth. It was found that the CNT growth is reaction-limited in the early stage of STEP growth and supply-limited in the late stage. We succeeded in doubling the CNT density over the conventional method by optimizing the raw material supply and temperature slope during the reaction-limited and supply-limited periods. A CNT thermal interface material was fabricated using a CNT film prepared by this method. Thermal resistance was 11% below a conventional indium thermal interface material. Owing to the above reasons, CNTs show promise as heat dissipation materials.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.54.045101