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- Title
Electrostatic force microscopy evaluation of the conductivity of individual multiwalled carbon nanotubes.
- Authors
Davletkildeev, N.; Sokolov, D.; Bolotov, V.; Lobov, I.
- Abstract
The electric conductivity of individual multiwalled carbon nanotubes (CNTs) doped with nitrogen has been studied in as-synthesized, heat-treated, and argon-ion-irradiated states by the method of electrostatic force microscopy (EFM). Modelling of transverse cross-section profiles of EFM images were used to determine the potential difference across the probe tip-CNT gap ( U ), which is a parameter related to the conductivity of CNTs. A strong correlation between the specific volume conductivity of a CNT layer and average U value has been found for all types of samples. It is established that a change in the conductivity of N-doped CNTs upon thermal annealing and argon-ion irradiation is caused by modification of the composition and/or concentration of defects in CNT walls.
- Subjects
MULTIWALLED carbon nanotubes; ELECTRIC conductivity; IONIZING radiation; DOPING agents (Chemistry); ELECTROSTATICS
- Publication
Technical Physics Letters, 2017, Vol 43, Issue 2, p205
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/S1063785017020171