Abstract
The radial distribution function (RDF) of different single-walled carbon nanotubes (SWCNTs) has been calculated showing characteristic patterns. Features related to diameter, chirality and doping in these nanostructures are analyzed. We also investigate the induced chirality of two samples, prepared with the chemical vapor deposition (CVD) method and the high-pressure Co conversion (HIPCo) procedure, respectively, by comparing the experimental RDF signal obtained from the neutron scattering technique with the RDFs of our simulations. We found armchair and zigzag nanotubes in the sample, but we cannot discard the presence of other chiralities. We believe that this is a useful method to study chiralities induced by different methods of production. Data up to Q = 30 Å- 1 were used in the Fourier transform, giving a high real space resolution of Δr ∼ 0.2 Å.
| Original language | English |
|---|---|
| Pages (from-to) | 473-476 |
| Number of pages | 4 |
| Journal | Diamond and Related Materials |
| Volume | 16 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2007 |
| Externally published | Yes |
Funding
This work has been supported by CONACyT Mexico (Grant No. 25237 and J31192U (HT, MT)) and by the Lujan Center at Los Alamos Neutron Science Center, funded by DOE Office of Basic Energy Sciences and Los Alamos National Laboratory funded by the Department of Energy under contract W-7405-ENG-36. The upgrade of NPDF has been funded by NSF through grant DMR 00-76488. We thank also Dr. A. Burian and H. C. Rosu for their important comments and discussions.
| Funders | Funder number |
|---|---|
| DOE Office of Basic Energy Sciences and Los Alamos National Laboratory | |
| National Science Foundation | DMR 00-76488 |
| U.S. Department of Energy | W-7405-ENG-36 |
| Consejo Nacional de Ciencia y Tecnología | 25237, J31192U |
Keywords
- CVD
- Nanotubes
- Simulation
- Surface structure