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RAMAN EFFECT IN CARBON NANOTUBES FILLED WITH NANOWIRES

RAMAN EFFECT IN CARBON NANOTUBES FILLED WITH NANOWIRES. E. Belandria E. Flahaut J. González. Synthesis. Double-wall carbon nanotubes (DWCNT) were prepared by CVD.

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RAMAN EFFECT IN CARBON NANOTUBES FILLED WITH NANOWIRES

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  1. RAMAN EFFECT IN CARBON NANOTUBES FILLED WITH NANOWIRES E. Belandria E. Flahaut J. González

  2. Synthesis • Double-wall carbon nanotubes (DWCNT) were prepared by CVD. • HRTEM images reveals that samples produced contain approximately 77% of DWCNTs, with a small admixture of about 18% singlewall carbon nanotubes (SWCNTs), and roughly 5% triple-wall carbon nanotubes.

  3. RAMAN RESONANTE

  4. 150 100 50 M Γ A Nanotubos Rellenos con Teluro Modos Tangenciales Eg 2.2 eV Dispersión Banda D

  5. Nanotubos Rellenos con Selenio Modos Tangenciales Eg 2.3 eV Dispersión Banda D

  6. Modos Tangenciales Nanotubos Rellenos con PbTe Eg 2.15 eV Dispersión Banda D

  7. Modos Tangenciales Nanotubos Rellenos con HgTe Eg 2.12 eV Dispersión Banda D

  8. Nanotubos Rellenos con CdSe Modos Tangenciales Dispersión Banda D D. Nesheva, H. Hofmeister, Z. Levi and Z. Aneva. Vacuum 65 (2002) 109–113

  9. RBM & CdSeModes

  10. Assignment RBMs Modes SWCNT

  11. Assignment CdSe Modes

  12. CdSe LO Confined

  13. Cluster de Cd6Se6 con estructura wurzita y aproximadamente de diámetro 0.8 nm

  14. Surface Phonons in Nanowires εw εm Para m=0

  15. Para radiación con energía de 2.41 eV

  16. L A Se Te PbTe HgTe

  17. Conclusions In conclusion, we have carried out a detailed Raman measurements of DWCNTs filled with nanowires of Se, Te, HgTe, PbTe, CdSe and PbI2, the HRTEM measurements indicated that all nanowires is contained inside the inner carbon nanotube. The redshift of the G-band can be used as a measure of the filling factor of the nanotubes, as long as the excitation energy exceeds the gap of the nanowires contained within.

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