Dynamic alignment of single-walled carbon nanotubes in pulsed magnetic fields

Nicolas Ubrig, Jonah Shaver, A. Nicholas G. Parra-Vasquez, Matteo Pasquali, Junichiro Kono, J. A. Fagan, Oliver Portugall

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We have used linear dichroism spectroscopy to measure the dynamic alignment of single-walled carbon nanotubes (SWNT) in pulsed magnetic fields up to 55 T. We make use of the fact that SWNTs absorb light only when the electric-field vector is oriented parallel to the tube axis. SWNTs thus produce a polarization dependent change of the optical transmission, that permits precise measurements of their orientation. In order to distinguish the influence of different mechanisms governing the alignment such as the external magnetic field, Brownian motion or the tube length, we have systematically varied parameters such as the viscosity of the aqueous solution and the sample temperature.

Original languageEnglish (US)
Pages (from-to)262-266
Number of pages5
JournalJournal of Low Temperature Physics
Volume159
Issue number1-2
DOIs
StatePublished - Apr 1 2010

Keywords

  • Carbon nanotubes
  • Dichroism
  • Pulsed magnetic fields

Fingerprint Dive into the research topics of 'Dynamic alignment of single-walled carbon nanotubes in pulsed magnetic fields'. Together they form a unique fingerprint.

Cite this