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Pressure Effects on Single Wall Carbon Nanotube Bundles

Teredesai, PV and Sood, AK and Sharma, SM and Karmakar, S and Sikka, SK and Govindaraj, A and Rao, CNR (2001) Pressure Effects on Single Wall Carbon Nanotube Bundles. In: physica status solidi:B, 223 . pp. 479-487.


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We report high pressure Raman studies on single wall carbon nanotube bundles under hydrostatic conditions using two different pressure transmitting media, alcohol mixture and pure water. The radial and tangential modes show a blue shift when SWNT bundle is immersed in the liquids at ambient pressures. The pressure dependence of the radial modes is the same in both liquids. However, the pressure derivatives dw/dP of the tangential modes are slightly higher for the water medium. Raman results are compared with studies under non-hydrostatic conditions and with recent high-pressure X-ray studies. It is seen that the mode frequencies of the recovered sample after pressure cycling from 26 GPa are downshifted by $~7-10 cm^{-1}$ as compared to the starting sample.

Item Type: Journal Article
Publication: physica status solidi:B
Publisher: WILEY-VCH Verlag Berlin GmbH.
Additional Information: The copyright belongs to WILEY-VCH Verlag Berlin GmbH.
Keywords: carbon nanotube;bundles;pressure effects;single wall;raman studies
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 06 Oct 2005
Last Modified: 19 Sep 2010 04:20
URI: http://eprints.iisc.ac.in/id/eprint/3786

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