Nano Archive

Structural changes in single-walled carbon nanotubes under non-hydrostatic pressures: x-ray and Raman studies

Karmakar, Sukanta and Sharma, Surinder M. and Teredesai, P. V. and Muthu, D. V. S. and Govindaraj, Achutharao and Sikka, S. K. and Sood, A. K. (2003) Structural changes in single-walled carbon nanotubes under non-hydrostatic pressures: x-ray and Raman studies. New Journal Of Physics, 5 . p. 143.

Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.

Official URL: http://www.iop.org/EJ/abstract/1367-2630/5/1/143/

Abstract

Using in situ x-ray diffraction and Raman scattering techniques, we have investigated the behaviour of single-walled carbon nanotubes bundles under non-hydrostatic pressures. It is seen that the diffraction line corresponding to the two-dimensional triangular lattice in the bundles is not reversible for pressures beyond 5 GPa, in sharp contrast to earlier results under hydrostatic pressure conditions. Most interestingly, radial breathing and tangential Raman modes of the pressure-cycled samples from 21 and 30 GPa match very well with those of the starting sample. Raman and x-ray results put together clearly suggest that the ordering of tubes in the bundles is only marginally regained with a very short coherence length on decompression.

Item Type:Article
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
Analytical Science > Nanotechnology for sensing and actuating
Technology > Manufacturing processes for nanotechnology
Physical Science > Photonics
Physical Science > Nanophysics
Engineering > Nanotechnology applications in mechanical engineering
Physical Science > Nano objects
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:4364
Deposited By:JNCASR
Deposited On:03 Apr 2009 05:13
Last Modified:06 Apr 2009 12:56

Repository Staff Only: item control page