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Issue 11, 2017
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Fingerprinting seamless single-walled carbon nanotube junctions via the migration of encapsulated N2 molecules from bottom to top: are arrays of VA-SWNTs continuous?

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Abstract

Structure control such as diameter changes along single-walled carbon nanotubes (SWNTs) can be achieved in arrays of vertically aligned (VA-) SWNTs by switching the feedstock during growth. The local nature of the macroscopic transition from one diameter to another is then questioned as one can either envisage seamless transitions or discontinuous individual SWNTs. Here, we demonstrate that encapsulated molecules can serve as markers to doubtlessly identify seamless interconnections in macroscopic samples. A migration of nitrogen molecules inside the continuous SWNTs is observed using bulk scale measurements on double-layered SWNT arrays synthesized from different carbon/nitrogen feedstocks. The existence of N2 molecules at the top of the SWNT arrays proves that there are continuous SWNTs throughout the double layered arrays with different diameters.

Graphical abstract: Fingerprinting seamless single-walled carbon nanotube junctions via the migration of encapsulated N2 molecules from bottom to top: are arrays of VA-SWNTs continuous?

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Publication details

The article was received on 24 Dec 2016, accepted on 18 Feb 2017 and first published on 21 Feb 2017


Article type: Paper
DOI: 10.1039/C6NR09901G
Citation: Nanoscale, 2017,9, 4002-4006
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    Fingerprinting seamless single-walled carbon nanotube junctions via the migration of encapsulated N2 molecules from bottom to top: are arrays of VA-SWNTs continuous?

    T. Thurakitseree, C. Kramberger, P. Singjai and S. Maruyama, Nanoscale, 2017, 9, 4002
    DOI: 10.1039/C6NR09901G

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