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Nanoscale pressure effects in individual double-wall carbon nanotubes

Puech, Pascal and Flahaut, Emmanuel and Sapelkin, Andrei and Hubel, Hannes and Dunstan, David J. and Landa, Georges and Bacsa, Wolfgang Nanoscale pressure effects in individual double-wall carbon nanotubes. (2006) Physical Review B (PRB), 73 (23). 233408-1. ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.73.233408


We use the signal from the internal tubes of double-wall carbon nanotubes as an ideal pressure reference. The intensity associated with the G band of the external tubes is shown to be related to the interaction of the pressure medium and the carbon nanotube. We observe clear pressure medium dependent pressure coefficients of the Raman G band using atomic argon, oxygen, and alcohol. The G band of the internal tubes shifts between 5.1 and 3.3 cm–1/GPa and for the external tubes between 5.8 and 8.6 cm–1/GPa for the different pressure media used. We find that the spectral shape of the optical phonon band depends clearly on the pressure medium. Ab initio calculations support local partial ordering and shell formation of the pressure medium around the nanotube. The shell formation around the tube has a strong impact on the local pressure transmission.

Item Type:Article
Additional Information:Thanks to American Physical Society editor. The definitive version is available at http://scitation.aip.org The original PDF of the article can be found at Physical Review B website : http://prb.aps.org/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > University of London (UNITED KINGDOM)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
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Deposited On:26 May 2009 08:07

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