Fingerprinting seamless single-walled carbon nanotube junctions via the migration of encapsulated N-2 molecules from bottom to top: are arrays of VA-SWNTs continuous?

Autor(en)

Theerapol Thurakitseree, Christian Kramberger, Pisith Singjai, Shigeo Maruyama

Abstrakt

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 N-2 molecules at the top of the SWNT arrays proves that there are continuous SWNTs throughout the double layered arrays with different diameters.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Maejo University, Chiang Mai University, University of Tokyo, National Institute of Advanced Industrial Science and Technology (AIST)

Journal

Nanoscale

Band

9

Seiten

4002-4006

Anzahl der Seiten

5

ISSN

2040-3364

DOI

https://doi.org/10.1039/c6nr09901g

Publikationsdatum

03-2017

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik, 210006 Nanotechnologie

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Materialwissenschaften

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/d7ee86fd-1156-467c-b912-a529f8f75c9a