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Light scattering of double wall carbon nanotubes under hydrostatic pressure: pressure effects on the internal and external tubes
Author(s) -
Puech P.,
Hubel H.,
Dunstan D. J.,
Bassil A.,
Bacsa R.,
Peigney A.,
Flahaut E.,
Laurent C.,
Bacsa W. S.
Publication year - 2004
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200405227
Subject(s) - hydrostatic pressure , carbon nanotube , internal pressure , raman spectroscopy , materials science , raman scattering , distortion (music) , scattering , light scattering , stress (linguistics) , chemistry , argon , hydrostatic equilibrium , molecular physics , optics , mechanics , composite material , physics , optoelectronics , amplifier , linguistics , philosophy , cmos , quantum mechanics , organic chemistry
We report high‐pressure Raman light scattering studies up to 10 GPa on double walled carbon nanotubes using two pressure transmitting media. In alcohol, a clear splitting of the G band is observed up to 10 GPa. This splitting is evidence for both discontinuous tangential stress and continuous radial stress. A structural distortion seems to be present at 3 GPa, revealed by a spectroscopic signature at 1480 cm –1 . With argon as the pressure transmitting medium, the nanotubes bundles show a transition at 6 GPa which corresponds to a collapse to a flattened structure and removes the splitting. The comparison of the pressure coefficients before the transition for the two pressure transmitting media shows that the ratio of the two coefficients associated with internal and external tubes, is the same but the absolute values are different. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)