Cleaning of carbon nanotubes near the π-plasmon resonance

The elimination of carbon impurities and defects in as-produced carbon single-walled nanotubes by employing a 248 nm excimer laser treatment is shown by a reduced full-width-at-half-maximum of the Raman D-band up to 755 mW/cm 2, and a decrease in the intensity of the D-band to the G-band. The cleani...

Full description

Saved in:
Bibliographic Details
Published in:Chemical physics letters 2007-01, Vol.433 (4), p.301-304
Main Authors: Hurst, K.E., Dillon, A.C., Keenan, D.A., Lehman, J.H.
Format: Article
Language:English
Subjects:
Basic Sciences
CARBON
CLEANING
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
NANOTUBES
RESONANCE
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The elimination of carbon impurities and defects in as-produced carbon single-walled nanotubes by employing a 248 nm excimer laser treatment is shown by a reduced full-width-at-half-maximum of the Raman D-band up to 755 mW/cm 2, and a decrease in the intensity of the D-band to the G-band. The cleaning of bulk carbon single-walled nanotubes (SWNTs) by use of a 248 nm excimer laser is verified with imaging, and quantitative evaluation of morphology and composition. A 5% change in responsivity of a pyroelectric detector coated with SWNTs is presented as a novel assessment of the change in SWNT coating topology. Changes in purity are shown by reduced full-width-at-half-maximum of the Raman D-band for 248 nm exposure up to 755 mW/cm 2. The 248 nm (5 eV) photon–plasmon resonance is considered as a mechanism for the reduction of impurities and an intermediate stage of purification.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2006.11.027