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Catalyst particle size dependent carbon nanotube cloning

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Title
Catalyst particle size dependent carbon nanotube cloning
Author(s)
Ziwei Xu; Feng Ding
Publication Date
2021-04
Journal
Carbon, v.175, pp.69 - 76
Publisher
Pergamon Press Ltd.
Abstract
The single walled carbon nanotube (SWCNT) cloning or its seeded growth with a catalyst particle docked on one of its ends was proposed as the ultimate solution for chirality-specific SWCNT synthesis and, therefore, revealing the effect of catalyst particle size on the robustness of the SWCNT cloning is crucial for experimental designs. Through systematic atomic simulations, we have clearly demonstrated that the robustness of SWCNT cloning depends on both the chiral angle of the SWCNT and the ratio of the diameters between the SWCNT and the docked catalyst particle. The zigzag (ZZ) or near ZZ SWCNTs are highly sensitive to the size of the docked catalyst particle. A small change of the catalyst particle size could lead to a variation of the SWCNT's chirality. In contrast, armchair (AC) or near-AC SWCNTs are less sensitive to the size of the docked catalyst particle and able to maintain their original chiralities within ∼30% variation of the catalyst particle size. This study greatly deepens our understanding of SWCNT's growth mechanism and provides a quantitative guidance for SWCNT cloning.
URI
https://pr.ibs.re.kr/handle/8788114/9194
DOI
10.1016/j.carbon.2020.12.085
ISSN
0008-6223
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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