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BN AND BCN NANOTUBES

BN AND BCN NANOTUBES. FLORIAN HASI Inst.f.Materialphysik Univ. Wien. WHAT ARE BN NANOTUBES. BN sheet. BN nanotube. L.Wirtz et al. METHODS TO PRODUCE BN TUBES. Multi -wall nanotubes. 1 .- ARC DISCHARGE. (Chopra et. al. 1995). 2.-. LASER ABLATION. ( Golberg,Bando et al.1996).

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BN AND BCN NANOTUBES

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  1. BN AND BCN NANOTUBES FLORIAN HASI Inst.f.Materialphysik Univ. Wien

  2. WHAT ARE BN NANOTUBES BN sheet BN nanotube L.Wirtz et al.

  3. METHODS TO PRODUCE BNTUBES Multi -wall nanotubes 1.-ARC DISCHARGE (Chopra et. al. 1995) 2.- LASER ABLATION (Golberg,Bando et al.1996)

  4. 200 nm 5 nm TEM images from BN tubes produced with Arc discharge method (L.Wirtz.France 2001)

  5. METHODS TO PRODUCE BN TUBES Multi -wall nanotubes 1.-ARC DISCHARGE (Chopra et. al. 1995) LASER ABLATION (Golberg,Bando et al.1996) 2.- Single- wall nanotubes 1.-SUBSTITION REACTION (Han,Bando,Kurashima,Sato.1998)

  6. SUBSTITUTION REACTION B2O3 + 3C(nanotubes) + N2 2BN(nanotubes) + 3CO SWCNT BCNT BNT

  7. SAMPLE(B2O3+SWCNT) 1200-1300°C

  8. MIR SPECTRA OF THERESULTINGMATERIAL 1200°, 2h, N2

  9. STARTING MATERIAL MIR SPECTRA OF SWCNT (HiPco samples) Small dipol Moment Low IR activity

  10. STARTING MATERIAL MIR spectra of B2O3

  11. MIRSPECTRA FROM THESTARTING AND THE RESULTINGMATERIAL 1300°C 1200°C B2O3

  12. INFRARED ABSORPTION OF THE RESULTING MATERIAL 1200°C PRESENT WORK L.WIRTZ et al.

  13. CONCLUSIONS A new material is produced 1- MIR spectra correspond to literature results 2- Different starting nanotubes and systematic study needed 3-

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