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Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma
Published on: February 2, 2012
Simultaneous fluorescence and Raman scattering from single carbon nanotubes.
Achim Hartschuh1, Hermeneglido N Pedrosa, Lukas Novotny
1Institute of Optics, University of Rochester, Rochester, NY 14627, USA.
Science (New York, N.Y.)
|September 6, 2003
Summary
Single-molecule fluorescence spectroscopy revealed distinct electronic properties in individual single-walled carbon nanotubes. Despite identical structures, variations in emission and linewidth suggest environmental influences, with stable fluorescence intensity observed.
Area of Science:
- Physical Chemistry
- Materials Science
- Nanotechnology
Background:
- Single-walled carbon nanotubes (SWCNTs) possess unique electronic properties.
- Understanding SWCNT electronic behavior is crucial for advanced applications.
- Characterizing individual nanotubes is key to resolving property variations.
Purpose of the Study:
- To determine the electronic properties of individual SWCNTs.
- To correlate nanotube structure with observed electronic behavior.
- To investigate the stability of fluorescence from individual SWCNTs.
Main Methods:
- Utilized single-molecule fluorescence spectroscopy to probe electronic properties.
- Employed Raman spectroscopy for simultaneous structural determination of SWCNTs.
- Analyzed fluorescence emission energies and linewidths of individual nanotubes.
Main Results:
- Identified variations in emission energies and linewidths among SWCNTs with identical structures.
- Attributed spectral differences to potential defects or local environmental factors.
- Observed unexpected stability in fluorescence intensity and spectra from individual SWCNTs, contrasting with other molecules.
Conclusions:
- Electronic properties of individual SWCNTs are sensitive to structural nuances and local environments.
- SWCNTs exhibit stable fluorescence characteristics, unlike many other molecular systems.
- These findings provide insights into SWCNT behavior for nanoscale electronic device development.
