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Arenal, R., Ferrari, A. C., Reich, S., Wirtz, L., Mevellec, J. .-Y., Lefrant, S., Rubio, A. & Loiseau, A. (2006) Raman spectroscopy of single-wall boron nitride nanotubes. Nano Lett. 6 1812–1816. 
Added by: Florent Boucher (2016-05-12 13:21:36)
Type de référence: Article
DOI: 10.1021/nl0602544
Numéro d'identification (ISBN etc.): 1530-6984
Clé BibTeX: Arenal2006
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Catégories: PMN
Mots-clés: scattering
Créateurs: Arenal, Ferrari, Lefrant, Loiseau, Mevellec, Reich, Rubio, Wirtz
Collection: Nano Lett.
Consultations : 7/505
Indice de consultation : 3%
Indice de popularité : 0.75%
Résumé     
Single-wall boron nitride nanotubes samples synthesized by laser vaporization of a hexagonal BN target under a nitrogen atmosphere are studied by UV and visible Raman spectroscopy. We show that resonant conditions are necessary for investigating phonon modes of BNNTs. Raman excitation in the UV (229 nm) provides preresonant conditions, allowing the identification of the A(1) tangential mode at 1370 cm(-1). This is 5 cm(-1) higher than the E-2g mode in bulk h-BN. Ab initio calculations show that the lower frequency of bulk h-BN with respect to large diameter nanotubes and the single sheet of h-BN is related to a softening of the sp2 bonds in the bulk due to interlayer interaction.
Added by: Florent Boucher  
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