Structural measurements for single-wall carbon nanotubes by Raman scattering technique
| Autor: | Sergej M. Pimenov, A. P. Volkov, Vladimir I. Zaikovskii, A.S. Pozarov, S. V. Terekhov, Jean-Marc Bonard, Vitali I. Konov, Vladimir L. Kuznetsov, Elena D. Obraztsova, Alexander N. Obraztsov |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Nanotube
Materials science Scattering Analytical chemistry Carbon nanotube Condensed Matter Physics law.invention Optical properties of carbon nanotubes symbols.namesake X-ray Raman scattering law symbols General Materials Science High-resolution transmission electron microscopy Raman spectroscopy Raman scattering |
| Zdroj: | Nanostructured Materials. 12:567-572 |
| ISSN: | 0965-9773 |
| DOI: | 10.1016/s0965-9773(99)00185-3 |
| Popis: | The single-wall carbon nanotubes grown by different techniques have been investigated by Roman scattering and high resolution transmission electron microscopy (HRTEM). The tube diameter values and the tube distribution over diameter have been estimated from the position and shape of the low-frequency band in the Raman spectrum containing the ‘breathing” modes. The diameter-dependent enhancement of the Raman signals from the different nanotube fractions occurred not only due to optical resonance with the laser excitation energy, but also due to thermo-induced resonances. The low-field electron emission from the single-wall carbon nanotube material has been measured. The threshold fields were 0.75–2 V/μm, the emission current reached the value 15 mA/cm2 at fields of 10 V/μm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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