Estimating the Raman Cross Sections of Single Carbon Nanotubes
| Autor: | Johanna E. Bohn, Rong Xiang, Shigeo Maruyama, Shohei Chiashi, Pablo G. Etchegoin, Eric C. Le Ru |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Macromolecular Substances Surface Properties Molecular Conformation Analytical chemistry General Physics and Astronomy Carbon nanotube Spectrum Analysis Raman Molecular physics law.invention symbols.namesake law Materials Testing Calibration Nanotechnology Computer Simulation General Materials Science Particle Size General Engineering Laser Nanostructures Optical properties of carbon nanotubes Models Chemical symbols Raman spectroscopy Order of magnitude Excitation |
| Zdroj: | ACS Nano. 4:3466-3470 |
| ISSN: | 1936-086X 1936-0851 |
| Popis: | The order of magnitude of Raman differential cross sections of radial breathing modes (RBMs) of individual carbon nanotubes is measured for 633 and 785 nm laser excitations. This is shown by both a calibration applied to previously published data from other authors at 785 nm and our own measurements of individual nanotubes at 633 nm excitation. We find typical values of differential cross sections of RBMs to be on the order of approximately 10(-22) cm(2)/sr for resonant nanotubes on a silicon substrate. This study therefore provides a rigorous quantification of the accepted view that Raman cross sections of carbon nanotubes are "huge". |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|