单壁碳纳米管中相干径向呼吸模式振荡的温度依赖性

2007 Conference on Lasers and Electro-Optics - Pacific Rim Pub Date : 2007-12-04 DOI:10.1109/CLEOPR.2007.4391778

Ji‐Hee Kim, Kang-jeon Han, Dong-wook Chang, Namje Kim, K. Yee, Y. Lim, E. Hároz, J. Kono

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引用次数: 0

摘要

利用飞秒泵浦和探针技术研究了单壁碳纳米管(SWCNTs)中径向呼吸模式(RBM)频率及其衰减时间的温度依赖性。随着温度的升高，我们发现某型碳纳米管的RBM频率和声子衰变时间在70℃左右出现了异常剧烈的变化，这可能是表面活性剂作用的结果。

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Temperature Dependence of the Coherent Radial Breathing Mode Oscillations in Single Walled Carbon Nanotubes

We report on temperature dependence of the radial breathing mode(RBM) frequency and its decay time in single walled carbon nanotubes (SWCNTs), which were studied by the femtosecond pump and probe technique. With increasing temperature, we found out that the RBM frequency and phonon decay time shows on abnormal dramatic change around 70degC for a certain type of carbon nanotubes, which may be originated from the surfactant effect.

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2007 Conference on Lasers and Electro-Optics - Pacific Rim

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