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
www: virag.elte.hu/kurti

5. C60

7. EELS
Im(-1/)

8. ω·Im()
Eprimer = 170 keV

9. !
Eb = eV

11. Raman- and infrared spectroscopy
VIBRATIONS:
Raman- and infrared spectroscopy

12. 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".

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

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

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

17. Inelastic light scattering: QM picturew1 w2 w1 w2
w (ħ=1)
ground state - -
w2 = w1 + w
w2 = w1 – w
wikipedia

18. 1st order Raman (Stokes)
phonon
q  0 (–point)
w2 = w1 – w
photon in
photon out a b w, w, w,

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

20. g = 120

23. Eddig mondtam el április 6-án