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

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 irradiations, 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 formation of linear carbon chains. The nanocarbon network created by this laser-induced transformation process show 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 opens possibilities for next generation materials with structural hybridization at the atomic scale.

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Publication details

The article was received on 09 Aug 2017, accepted on 07 Oct 2017 and first published on 10 Oct 2017


Article type: Communication
DOI: 10.1039/C7NR05883G
Citation: Nanoscale, 2017, Accepted Manuscript
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    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, Accepted Manuscript , DOI: 10.1039/C7NR05883G

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