Yu Choongho, Shi Li, Yao Zhen, Li Deyu, Majumdar Arunava
Department of Mechanical Engineering and Physics, Center for Nano and Molecular Science and Technology, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA.
Nano Lett. 2005 Sep;5(9):1842-6. doi: 10.1021/nl051044e.
We have observed experimentally that the thermal conductance of a 2.76-microm-long individual suspended single-wall carbon nanotube (SWCNT) was very close to the calculated ballistic thermal conductance of a 1-nm-diameter SWCNT without showing signatures of phonon-phonon Umklapp scattering for temperatures between 110 and 300 K. Although the observed thermopower of the SWCNT can be attributed to a linear diffusion contribution and a constant phonon drag effect, there could be an additional contact effect.
我们通过实验观察到，一根长度为2.76微米的单个悬浮单壁碳纳米管（SWCNT）的热导率非常接近直径为1纳米的SWCNT的计算弹道热导率，在110至300 K的温度范围内未显示出声子-声子倒逆散射的特征。尽管观察到的SWCNT的热功率可归因于线性扩散贡献和恒定的声子拖曳效应，但可能还存在额外的接触效应。
