Electrostatic force microscopy evaluation of the conductivity of individual multiwalled carbon nanotubes


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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 (Utip-CNT), which is a parameter related to the conductivity of CNTs. A strong correlation between the specific volume conductivity of a CNT layer and average Utip-CNT 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.

作者简介

N. Davletkildeev

Omsk Scientific Center, Siberian Branch; Dostoevsky Omsk State University

编辑信件的主要联系方式.
Email: nadim@obisp.oscsbras.ru
俄罗斯联邦, Omsk, 644024; Omsk, 644077

D. Sokolov

Omsk Scientific Center, Siberian Branch

Email: nadim@obisp.oscsbras.ru
俄罗斯联邦, Omsk, 644024

V. Bolotov

Omsk Scientific Center, Siberian Branch

Email: nadim@obisp.oscsbras.ru
俄罗斯联邦, Omsk, 644024

I. Lobov

Omsk Scientific Center, Siberian Branch; Dostoevsky Omsk State University

Email: nadim@obisp.oscsbras.ru
俄罗斯联邦, Omsk, 644024; Omsk, 644077

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