Calculation of optical constants from carbon nanotube transmission spectra

We want to clarify a few issues about using optical absorption spectra for characterizing carbon nanotubes. The common method of using optical density for nanotube counting is reasonable in the near‐infrared and visible spectral region, but fails for the mid and far infrared, where metallic tubes ca...

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Bibliographic Details
Published in:Physica Status Solidi (b) 2006-11, Vol.243 (13), p.3485-3488
Main Authors: Pekker, Á., Borondics, F., Kamarás, K., Rinzler, A. G., Tanner, D. B.
Format: Article
Language:English
Subjects:
78.67.Ch
81.07.De
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Nanotubes
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Physics
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Summary:We want to clarify a few issues about using optical absorption spectra for characterizing carbon nanotubes. The common method of using optical density for nanotube counting is reasonable in the near‐infrared and visible spectral region, but fails for the mid and far infrared, where metallic tubes can be unambigously detected. By performing Kramers–Kronig transformation on wide‐range transmittance spectra of free‐standing films, the far‐infrared spectral region creates a unique possibility for estimating the amount of metallic tubes in different nanotube networks. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.200669141