Sorting carbon nanotubes by electronic structure using density differentiation.

Michael S. Arnold, Alexander A. Green, James F. Hulvat, Samuel I Stupp, Mark C Hersam

Research output: Contribution to journalArticle

1729 Citations (Scopus)

Abstract

The heterogeneity of as-synthesized single-walled carbon nanotubes (SWNTs) precludes their widespread application in electronics, optics and sensing. We report on the sorting of carbon nanotubes by diameter, bandgap and electronic type using structure-discriminating surfactants to engineer subtle differences in their buoyant densities. Using the scalable technique of density-gradient ultracentrifugation, we have isolated narrow distributions of SWNTs in which >97% are within a 0.02-nm-diameter range. Furthermore, using competing mixtures of surfactants, we have produced bulk quantities of SWNTs of predominantly a single electronic type. These materials were used to fabricate thin-film electrical devices of networked SWNTs characterized by either metallic or semiconducting behaviour.

Original languageEnglish
Pages (from-to)60-65
Number of pages6
JournalNature Nanotechnology
Volume1
Issue number1
DOIs
Publication statusPublished - Oct 2006

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Carbon Nanotubes
Single-walled carbon nanotubes (SWCN)
classifying
Sorting
Electronic structure
Carbon nanotubes
carbon nanotubes
electronic structure
Surface-Active Agents
Surface active agents
surfactants
electronics
Optics
Energy gap
Electronic equipment
engineers
Engineers
Thin films
optics
gradients

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering
  • Materials Science(all)
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

Cite this

Sorting carbon nanotubes by electronic structure using density differentiation. / Arnold, Michael S.; Green, Alexander A.; Hulvat, James F.; Stupp, Samuel I; Hersam, Mark C.

In: Nature Nanotechnology, Vol. 1, No. 1, 10.2006, p. 60-65.

Research output: Contribution to journalArticle

Arnold, Michael S. ; Green, Alexander A. ; Hulvat, James F. ; Stupp, Samuel I ; Hersam, Mark C. / Sorting carbon nanotubes by electronic structure using density differentiation. In: Nature Nanotechnology. 2006 ; Vol. 1, No. 1. pp. 60-65.
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