Evaluation of Thermal Conductivity of a Multi-Walled Carbon Nanotube Using the $\Delta V_{\text{gs}}$ Method
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概要
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Thermal conductivity of a multi-walled carbon nanotube (MWNT) was evaluated using the $\Delta V_{\text{gs}}$ method for the first time. MWNTs were prepared in pillars, and the pillars were placed on two aluminum nitride (AlN) substrates. An AlGaN/GaN high electron mobility transistor (HEMT) chip, which was set on an AlN substrate, was used as a thermometer and as a thermal source. The thermal resistance of the sample was measured using the $\Delta V_{\text{gs}}$ method. From the thermal resistance of MWNT pillars, we succeeded in evaluating the thermal conductivity of a MWNT pillar and that of a MWNT as high as 74.2 and 950 W/(m$\cdot$K), respectively. The thermal conductivity of MWNTs evaluated in this study is much higher than that of usual metals. We confirmed that MWNTs are promising materials for heat dissipation problems.
- 2007-05-15
著者
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Awano Yuji
Nanotechnology Research Center Fujitsu Laboratories Ltd.
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Kondo Daiyu
Nanotechnology Research Center Fujitsu Laboratories Ltd.
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Nihei Mizuhisa
Nanotechnology Research Center Fujitsu Laboratories Ltd.
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IWAI Taisuke
Nanotechnology Research Center, Fujitsu Laboratories Ltd.
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Nihei Mizuhisa
Nanotechnology Research Center, Fujitsu Laboratories Ltd., Atsugi, Kanagawa 243-0197, Japan
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Shioya Hiroki
Nanotechnology Research Center, Fujitsu Laboratories Ltd., 10-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0197, Japan
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Kondo Daiyu
Nanotechnology Research Center, Fujitsu Laboratories Ltd., Atsugi, Kanagawa 243-0197, Japan
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Iwai Taisuke
Nanotechnology Research Center, Fujitsu Laboratories Ltd., Atsugi, Kanagawa 243-0197, Japan
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