Abstract
In the present work, the non-resonant Raman-active modes are calculated for severaldiameters, chiralities and sizes for homogeneous and inhomogeneous bundles ofsingle-walled carbon nanotubes (BWCNTs), using the spectral moment’s method(SMM). Additional intense Raman-active modes are present in the breathing-likemodes (BLM) spectra of these systems in comparison with a single fully symmetricA1g mode characteristic of isolated nanotubes (SWCNTs). The dependence of the wavenumberof these modes in terms of diameters, lengths and number of tubes was investigated. Wefound that, for a finite (in)homogeneous bundle, additional breathing-like modes appear asa specific signature.
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