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Far Infrared Characterization of Single and Double Walled Carbon Nanotubes

Published

Author(s)

Shin G. Chou, Zeeshan Ahmed, Georgy Samsonidze, Jing Kong, Mildred Dresselhaus

Abstract

Variable temperature high resolution far infrared absorption measurements were carried out for single walled carbon nanotubes samples with different diameter distributions. At a temperature where kBT is significantly lower than the phonon energy, the broad absorption features as observed in room temperature become well resolved optical transitions. Lineshape analysis shows that the most of the transitions observed in the region are consistent with phonon transitions instead direct absorption from small-bandgap semiconducting nanotubes. The energies of the transitions are consistent with the phonon modes associated with circumferential motions such as squashing modes and higher order circumferential vibrations.
Proceedings Title
Symposium C: Fundamentals of Low-Dimensional Carbon Nanomaterials
Volume
1284
Conference Dates
November 29-December 3, 2010
Conference Location
Boston, MA
Conference Title
Materials Research Society Fall Meeting

Keywords

carbon nanotubes, material science, nanotechnology, THz metrology

Citation

Chou, S. , Ahmed, Z. , , G. , Kong, J. and , M. (2011), Far Infrared Characterization of Single and Double Walled Carbon Nanotubes, Symposium C: Fundamentals of Low-Dimensional Carbon Nanomaterials , Boston, MA, [online], https://doi.org/10.1557/opl.2011.365 (Accessed May 30, 2024)

Issues

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Created January 17, 2011, Updated November 10, 2018