Current-induced defect formation in multi-walled carbon nanotubes

A voltage has been applied to a network of multiwalled carbon nanotubes (MWCNTs) placed between two electrodes. The current flowing through the MWCNTs is found to be responsible of irreversible effects, such as the suppression of radial breathing modes (RBM) in the Raman spectra. Furthermore, we obs...

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Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2014-02, Vol.16 (2), p.1-6, Article 2287
Main Authors: Scuderi, Viviana, Tripodi, Lisa, Piluso, Nicolò, Bongiorno, Corrado, Di Franco, Salvatore, Scalese, Silvia
Format: Article
Language:English
Subjects:
Applied sciences
Characterization and Evaluation of Materials
Chemistry and Materials Science
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Electric potential
Electrodes
Electronics
Exact sciences and technology
Inorganic Chemistry
Irradiation
Laser beams
Lasers
Materials Science
Molecular electronics, nanoelectronics
Multi wall carbon nanotubes
Nanocrystalline materials
Nanoparticles
Nanoscale materials and structures: fabrication and characterization
Nanotechnology
Nanotubes
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Radiation effects on specific materials
Raman spectra
Research Paper
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Structural damage
Structure of solids and liquids
crystallography
Voltage
Walls
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Summary:A voltage has been applied to a network of multiwalled carbon nanotubes (MWCNTs) placed between two electrodes. The current flowing through the MWCNTs is found to be responsible of irreversible effects, such as the suppression of radial breathing modes (RBM) in the Raman spectra. Furthermore, we observe a significant modification of the G-band in the Raman spectra for applied voltages higher than 1 V, only if Raman analysis is performed while current is flowing. This is due to a combined effect of current flow and laser beam irradiation that induces extended structural damage in the CNT outer walls.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-014-2287-4