Probing of uniaxial strain in individual single-walled carbon nanotubes in a composite material. - Archive ouverte HAL
Communication Dans Un Congrès Année : 2011

Probing of uniaxial strain in individual single-walled carbon nanotubes in a composite material.

Y. Yuzyuk
  • Fonction : Auteur
Christophe Voisin
Laurent Alvarez
Sébastien Berger
Jean-Louis Sauvajol
  • Fonction : Auteur
  • PersonId : 1005375
  • IdRef : 079125352

Résumé

The temperature dependence of the Raman spectrum of a gelatine-based composite material doped with single-walled carbon nanotubes (SWNT@gelatin) is reported [1]. A significant up-shift of the G-mode frequency is observed when the temperature is decreased from room temperature to 20 K. This frequency shift is significantly stronger than the one found for pure thermal effects. In contrast, the features of the radial breathing modes (frequencies and width) display no significant change in the same temperature range. These results are well understood by considering a uniaxial strain on the nanotube induced by the thermal expansitivity mismatch between the nanotube and the surrounding matrix [2,3]. These conclusions are in good agreement with photoluminescence experiments performed on the same samples [4]. References [1] D. Levshov, J. Phys. Chem. C 2010, 114, 16210-16214. [2] S. Cronin, Phys. Rev. Lett. 2004, 93, 167401. [3] G. Wu, Phys. Rev. B 2005, 72, 115411. [4] S. Berger, J. Appl. Phys. 2009, 105, 094323.
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Dates et versions

hal-00641790 , version 1 (16-11-2011)

Identifiants

  • HAL Id : hal-00641790 , version 1

Citer

Dimitry Levshov, Thierry Michel, Y. Yuzyuk, Christophe Voisin, Laurent Alvarez, et al.. Probing of uniaxial strain in individual single-walled carbon nanotubes in a composite material.. GDRI GNT Meeting 2011, Feb 2011, Dourdan, France. ⟨hal-00641790⟩
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