Optical Studies of Single Walled Nanotubes Synthesized from C:BN:B4C Catalytic Mixture
| Autor: | V. V. Grebenyukov, Natalia R. Arutyunyan, Elena D. Obraztsova, A. S. Pozharov, S. N. Bokova |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Doping Analytical chemistry Nanotechnology Boron carbide Carbon nanotube Electronic Optical and Magnetic Materials law.invention Catalysis Electric arc chemistry.chemical_compound symbols.namesake chemistry law Boron nitride symbols Electrical and Electronic Engineering Raman spectroscopy Raman scattering |
| Zdroj: | Journal of Nanoelectronics and Optoelectronics. 4:281-285 |
| ISSN: | 1555-1318 1555-130X |
| DOI: | 10.1166/jno.2009.1039 |
| Popis: | Single-walled nanotubes have been synthesized by arc discharge technique from C:BN:B 4 C catalytic mixture with an admixture of a typical Ni:Y 2 O 3 catalyst. Nitrogen and helium have been used as ambient gases. The arc current and voltage were varied in the process. The synthesized materials have been characterized by a Raman spectroscopy. The arc current value increase induced a frequency shift of the dominating Raman radial breathing mode toward higher frequencies. This trend was opposite to that observed for the pure carbon nanotubes. A probability of doping and other mechanisms being able to result in such shift are discussed in this article. |
| Databáze: | OpenAIRE |
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