Determination of the Thermal Expansion Coefficient of Single-Wall Carbon Nanotubes by Raman Spectroscopy

作者：Espinosa Vega L I; Rodriguez A G^*; Navarro Contreras H; Vidal M A

来源：Spectroscopy Letters, 2015, 48(2): 139-143.

DOI：10.1080/00387010.2013.860172

• nanotubes
• Raman spectroscopy
• thermal expansion

We have examined the effect of high temperature on single-wall carbon nanotubes under air and nitrogen ambient by Raman spectroscopy. We observe the temperature dependence of the radial breathing mode and the G-band modes. The thermal expansion coefficient (beta) of the bundled nanotubes is obtained experimentally using the estimated volume from Raman scattering. beta behaves linearly with temperature from 0.33 x 10(-5) K-1 to 0.28 x 10(-5) K-1 in air and from 0.58 x 10(-5) K-1 to 0.47 x 10(-5) K-1 in nitrogen ambient, respectively. The temperature dependence of the radial breathing mode Raman frequencies is consistent with a pure temperature effect.

• 出版日期2015