Diffusion of One-Dimensional Crystals in Channels of Single-Walled Carbon Nanotubes


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Abstract

The transport of one-dimensional CuI crystals in channels of single-walled carbon nanotubes (SWCNTs) has been studied by high resolution electron microscopy. The diffusion kinetics has been investigated by counting the number of CuI atoms escaping from the nanotube channel. The diffusivity is calculated to be 6.8 × 10–21 m2/s, which corresponds to an activation-barrier height of ~1 eV/atom. A comparison with the theoretically estimated height of the energy barrier for molecular transport through a graphene layer is indicative of mass transfer through vacancy defects in graphene.

About the authors

V. G. Zhigalina

Shubnikov Institute of Crystallography, Federal Research Centre “Crystallography and Photonics,”; National Research Centre “Kurchatov Institute,”; Centre for Surface and Vacuum Research (CSVR)

Author for correspondence.
Email: v.zhigalina@gmail.com
Russian Federation, Moscow, 119333; Moscow, 123182; Moscow, 119421

A. S. Kumskov

Shubnikov Institute of Crystallography, Federal Research Centre “Crystallography and Photonics,”; National Research Centre “Kurchatov Institute,”; Centre for Surface and Vacuum Research (CSVR)

Email: v.zhigalina@gmail.com
Russian Federation, Moscow, 119333; Moscow, 123182; Moscow, 119421

N. S. Falaleev

Moscow State University

Email: v.zhigalina@gmail.com
Russian Federation, Moscow, 119992

A. L. Vasiliev

Shubnikov Institute of Crystallography, Federal Research Centre “Crystallography and Photonics,”; National Research Centre “Kurchatov Institute,”; Centre for Surface and Vacuum Research (CSVR)

Email: v.zhigalina@gmail.com
Russian Federation, Moscow, 119333; Moscow, 123182; Moscow, 119421

N. A. Kiselev

Shubnikov Institute of Crystallography, Federal Research Centre “Crystallography and Photonics,”

Email: v.zhigalina@gmail.com
Russian Federation, Moscow, 119333


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