Question

Difference in raman spectra of single walled and multi walled carbon nanotubes

Answer 1

Explanation:

Metallic and semiconducting tubes can be distinguished from the high-energy Raman spectra. ... Besides the vibrational frequencies and symmetries Raman spec- troscopy also allows optical (excitonic) transitions, electron–phonon coupling and phase transitions in single-walled carbon nanotubes to be studied

Answer 2

Answer:

Raman spectra of multi-walled and single-walled carbon nanotubes. Dry powder samples of six single-walled carbon nanotubes and twelve multi-walled carbon nanotubes were analyzed using Raman spectroscopy at a wavelength of 532 nm. Spectra are shown as Raman intensity as a function of wavenumber (cm−1), where characteristic peaks representing the radial breathing mode, D-band, G-mode, and G’-mode for a typical carbon nanotube Raman spectrum are shown in panel 3 (single-walled carbon nanotube sample 3). Abbreviations: SWNT, single-walled carbon nanotubes; MWNT, multi-walled carbon nanotubes.

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