Self-formation of highly aligned metallic, semiconducting and single chiral single-walled carbon nanotubes assemblies via a crystal template method

Hideki Kawai, Kai Hasegawa, Ayako Oyane, Yasuhisa Naitoh, Kazuhiro Yanagi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The fabrication of an aligned array of single-walled carbon nanotubes (SWCNTs) with a single chiral state has been a significant challenge for SWCNT applications as well as for basic science research. Here, we developed a simple, unique technique to produce assemblies in which metallic, semiconducting, and single chiral state SWCNTs were densely and highly aligned. We utilized a crystal of surfactant as a template on which mono-dispersed SWCNTs in solution self-assembled. Micro-Raman measurements and scanning electron microscopy measurements clearly showed that the SWCNTs were highly and densely aligned parallel to the crystal axis, indicating that approximately 70% of the SWCNTs were within 7° of being parallel. Moreover, the assemblies exhibited good field effect transistor characteristics with an on/off ratio of 1.3×105.

Original languageEnglish
Article number093102
JournalApplied Physics Letters
Volume105
Issue number9
DOIs
Publication statusPublished - 2014 Sep 1
Externally publishedYes

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assemblies
templates
carbon nanotubes
crystals
field effect transistors
surfactants
fabrication
scanning electron microscopy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Self-formation of highly aligned metallic, semiconducting and single chiral single-walled carbon nanotubes assemblies via a crystal template method. / Kawai, Hideki; Hasegawa, Kai; Oyane, Ayako; Naitoh, Yasuhisa; Yanagi, Kazuhiro.

In: Applied Physics Letters, Vol. 105, No. 9, 093102, 01.09.2014.

Research output: Contribution to journalArticle

Kawai, Hideki ; Hasegawa, Kai ; Oyane, Ayako ; Naitoh, Yasuhisa ; Yanagi, Kazuhiro. / Self-formation of highly aligned metallic, semiconducting and single chiral single-walled carbon nanotubes assemblies via a crystal template method. In: Applied Physics Letters. 2014 ; Vol. 105, No. 9.
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