Computation of powder diffraction patterns for carbon nanotubes.
|Jacek Kołoczek , Andrzej Burian|
University of Silesia, Department of Biophysics and Molecular Physics, Uniwersytecka 4, Katowice 40-007, Poland
Structural information about carbon nanotubes comes mainly from electron microscopy (EM) and electron diffraction (ED). These techniques proved to be an efficient tool and present knowledge about atomic arrangement in nanotubes, their symmetry and chirality are based on EM and ED studies. In fact EM and ED are the local probes of the structure. On the other hand there is need for characterization of spatial correlation in nanotubes as a whole. Therefore it is desirable to develop a numerical procedure for computation of powder X-ray or neutron diffraction patterns. The results of such modeling could be then compared with the experimental data and agreement between them would be a criterion for rejection of acceptation of the model. Quantitative theory of the kinematical diffraction based on the Cochran, Crick and Vand [1-3] approach developed for the chiral DNA molecules has been adopted to compute the diffraction patterns of carbon nanotubes.
Presentation: oral at E-MRS Fall Meeting 2003, Symposium B, by Jacek M. Kołoczek
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-09 14:58 Revised: 2009-06-08 12:55