Thermal transport measurements of individual multiwalled nanotubes
Thermal transport measurements of individual multiwalled nanotubes
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DOI：
10.1103/physrevlett.87.215502
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发表时间：
2001-11-19
影响因子：
8.6
通讯作者：
McEuen, PL
中科院分区：
文献类型：
--
作者：
Kim, P;Shi, L;McEuen, PL
利用微制造悬浮装置测量了单个碳纳米管的热导率和热电势。所观察到的热导率在室温下超过3000 W/K m，这比使用宏观垫样品的先前实验的估计高2个数量级。纳米管的热导率的温度依赖性表现出一个峰值在320 K由于umklapp声子散射的发病。测得的热电功率显示出线性温度依赖性，在室温下的值为80 μ V/K。
The thermal conductivity and thermoelectric power of a single carbon nanotube were measured using a microfabricated suspended device. The observed thermal conductivity is more than 3000 W/K m at room temperature, which is 2 orders of magnitude higher than the estimation from previous experiments that used macroscopic mat samples. The temperature dependence of the thermal conductivity of nanotubes exhibits a peak at 320 K due to the onset of umklapp phonon scattering. The measured thermoelectric power shows linear temperature dependence with a value of 80 muV/K at room temperature.