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Issue 43, 2017
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Ultrafast structural evolution and formation of linear carbon chains in single-walled carbon nanotube networks by femtosecond laser irradiation

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Abstract

Inter-allotropic structural transformation of sp2 structured nanocarbon is a topic of fundamental and technological interest in scalable nanomanufacturing. Such modifications usually require extremely high temperature or high-energy irradiation, and are usually a destructive and time-consuming process. Here, we demonstrate a method for engineering a molecular structure of single-walled carbon nanotubes (SWNTs) and their network properties by femtosecond laser irradiation. This method allows effective coalescence between SWNTs, transforming them into other allotropic nanocarbon structures (double-walled, triple-walled and multi-walled nanotubes) with the formation of linear carbon chains. The nanocarbon network created by this laser-induced transformation process shows extraordinarily strong coalescence induced mode in Raman spectra and two-times enhanced electrical conductivity. This work suggests a powerful method for engineering sp2 carbon allotropes and their junctions, which provides possibilities for next generation materials with structural hybridization at the atomic scale.

Graphical abstract: Ultrafast structural evolution and formation of linear carbon chains in single-walled carbon nanotube networks by femtosecond laser irradiation

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Supplementary files

Article information


Submitted
09 Aug 2017
Accepted
07 Oct 2017
First published
10 Oct 2017

Nanoscale, 2017,9, 16627-16631
Article type
Communication

Ultrafast structural evolution and formation of linear carbon chains in single-walled carbon nanotube networks by femtosecond laser irradiation

J. Ha, H. Y. Jung, J. Hao, B. Li, A. Raeliarijaona, J. Alarcón, H. Terrones, P. M. Ajayan, Y. J. Jung, J. Kim and D. Kim, Nanoscale, 2017, 9, 16627
DOI: 10.1039/C7NR05883G

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