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CARBON NANOSTRUCTURES (FULLERENES, CARBON NANOTUBES, GRAPHENE)

CARBON NANOSTRUCTURES (FULLERENES, CARBON NANOTUBES, GRAPHENE). lecture for physics and chemistry students (2017. summer semester – 06. April) Prof. Jenő Kürti ELTE Department of Biological Physics e-mail: kurti@virag.elte.hu www: virag.elte.hu/kurti. C 60. EELS. Im(-1/  ). ω · Im(  ).

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CARBON NANOSTRUCTURES (FULLERENES, CARBON NANOTUBES, GRAPHENE)

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  1. CARBON NANOSTRUCTURES(FULLERENES, CARBON NANOTUBES, GRAPHENE) lecture for physics and chemistry students (2017. summer semester – 06. April) Prof. Jenő Kürti ELTE Department of Biological Physics e-mail: kurti@virag.elte.hu www: virag.elte.hu/kurti

  2. C60

  3. EELS Im(-1/)

  4. ω·Im() Eprimer = 170 keV

  5. ! Eb = 285.0 eV

  6. VIBRATIONS: Raman- and infrared spectroscopy

  7. Sir Chandrasekhara Venkata Raman (7 November 1888 – 21 November 1970) The Nobel Prize in Physics 1930 "for his work on the scattering of light and for the discovery of the effect named after him".

  8. anti - Stokes Stokes D.A. Long: Raman spectroscopy McGraw-Hill, 1977

  9. http://www.raman.de/htmlEN/basics/intensityEng.html

  10. https://faculty.unlv.edu/klipinska/assets/Lab/RAMAN/

  11. Inelastic light scattering: classical picture induced dipole moment k 0 0 0 k 0 k polarizability anti-Stokes Stokes Rayleigh Raman

  12. Inelastic light scattering: QM picture w1 w2 w1 w2 w(ħ=1) ground state - - w2=w1+w w2=w1–w wikipedia

  13. 1st order Raman (Stokes) phonon q  0 (–point) w2=w1 – w photon in photon out a b 0 w, w, w, 0

  14. hin hout hin hout hin hout resonance Raman (incoming)

  15. g = 120

  16. Eddig mondtam el április 6-án

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