The Kinetics of Chirality Assignment in Catalytic Single Walled Carbon Nanotube Growth

Ziwei Xu; Tianying Yan; Feng Ding

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arXiv · 1403.6949

The Kinetics of Chirality Assignment in Catalytic Single Walled Carbon Nanotube Growth

Ziwei Xu·Tianying Yan·Feng Ding

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Abstract

Chirality-selected single-walled carbon nanotubes (SWCNTs) ensure a great potential of building ~1 nm sized electronics. However, the reliable method for chirality-selected SWCNT is still pending. Here we present a theoretical study on the SWCNT's chirality assignment and control during the catalytic growth. This study reveals that the chirality of a SWCNT is determined by the kinetic incorporation of the pentagon formation during SWCNT nucleation. Therefore, chirality is randomly assigned on a liquid catalyst surface. Furthermore, based on the understanding, two potential methods of synthesizing chirality-selected SWCNTs are proposed: i) by using Ta, W, Re, Os, or their alloys as solid catalysts, and ii) by changing the SWCNT's chirality frequently during the growth.

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Ziwei Xu, Tianying Yan, Feng Ding. 2014-03-27. The Kinetics of Chirality Assignment in Catalytic Single Walled Carbon Nanotube Growth. https://arxiv.org/abs/1403.6949

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