Raman Spectra of Double-Wall Carbon Nanotubes under Extreme Uniaxial Stress

Elena del Corro (1) , Jesus Gonzalez (1, 2) , Mercedes Taravillo (1) , Emmanuel Flahaut (3) , Valentin G. Baonza (1)

1 UCM - Universidad Complutense de Madrid = Complutense University of Madrid [Madrid]
2 Centro de Estudios de Semiconductores, Facultad de Ciencias
3 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

We investigated the pressure dependence of the Raman frequencies and intensities of the D and G bands of double-wall carbon nanotubes under strong uniaxial conditions. Using moissanite anvils, we observed for the first time the evolution of the D band under extreme stress/pressure conditions. We find that the difference between D and G frequencies remains constant over the whole stress range. In addition, we observe that double-wall carbon nanotubes behave elastically up to the maximum uniaxial stress reached in our experiments, which is estimated to be about 12 GPa.

Mots clés: Matériaux

Domaines: Matériaux

Elena del Corro, Jesus Gonzalez, Mercedes Taravillo, Emmanuel Flahaut, Valentin G. Baonza. Raman Spectra of Double-Wall Carbon Nanotubes under Extreme Uniaxial Stress. Nano Letters, 2008, 8 (8), pp.2215-2218. ⟨10.1021/nl080760o⟩. ⟨hal-03578326⟩