Stability of carbon nanotubes to laser irradiation probed by Raman spectroscopy

Document identifier: oai:DiVA.org:ltu-7792
Access full text here:10.1002/pssb.200879661
Keyword: Natural Sciences, Physical Sciences, Other Physics Topics, Naturvetenskap, Fysik, Annan fysik
Publication year: 2008
Abstract:

We report on a systematic study of the influence of laser irradiation on the Raman spectra of HiPco-produced single-wall CNTs. Specifically, we have examined the Raman response of bundled CNTs to: i) laser power density; ii) exposure time and iii) photon energy (1.96 and 2.33 eV). Our results show that irreversible destruction of CNTs in the bundles can occur at even low laser power density (0.15 kW/cm2). The tubes with smaller diameters are influenced first and the rate of CNT destruction increases with photon energy. Finally, we determined that when investigating destruction of CNT bundles, the use of a low laser power density is required because changes in the structure of the bundles can lead to sample temperature changes for otherwise identical measurement parameters. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Authors

David Olevik

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Alexander Soldatov

Luleå tekniska universitet; Materialvetenskap
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M. Dossot

Laboratoire de Chimie Physique et Microbiologie pour l'Environnement, Nancy Université
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B. Vigolo

Laboratoire de Chimie du Solide Minéral, Nancy Université
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B. Humbert

Laboratoire de Chimie Physique et Microbiologie pour l'Environnement, Nancy Université
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E, McRae

Laboratoire de Chimie du Solide Minéral, Nancy Université
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