Optical absorption and thermal transport of individual suspended carbon nanotube bundles.
Optical absorption and thermal transport of individual suspended carbon nanotube bundles.
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DOI：
10.1021/nl802737q
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发表时间：
2009-01
期刊：
影响因子：
10.8
通讯作者：
I. Hsu;M. Pettes;Adam W. Bushmaker;M. Aykol;Li Shi;S. Cronin
中科院分区：
文献类型：
--
作者：
I. Hsu;M. Pettes;Adam W. Bushmaker;M. Aykol;Li Shi;S. Cronin
聚焦激光束用于加热桥接两个悬挂的微型温度计的单个单壁碳纳米管束。通过测量两个温度计的温升，发现直径为7.4- 10.3nm的光纤束对0.4 μ m光斑的光吸收在入射光子的0.03 - 0.44%之间。束的热导率获得与额外的测量的纳米管的温度上升的激光点从移位的拉曼G带频率。根据透射电子显微镜测定的纳米管束直径，得到了导热系数。
A focused laser beam is used to heat individual single-walled carbon nanotube bundles bridging two suspended microthermometers. By measurement of the temperature rise of the two thermometers, the optical absorption of 7.4-10.3 nm diameter bundles is found to be between 0.03 and 0.44% of the incident photons in the 0.4 microm diameter laser spot. The thermal conductance of the bundle is obtained with the additional measurement of the temperature rise of the nanotubes in the laser spot from shifts in the Raman G band frequency. According to the nanotube bundle diameter determined by transmission electron microscopy, the thermal conductivity is obtained.