BROWSE

Related Researcher

Author's Photo

Yoo, Jung-Woo
Functional Hybrid Materials and Devices Lab(FHMDL)
Research Interests
  • Transport properties, spintronics, organic/molucular magnet, electronic, and spintronics,
  • 2DEG, energy harvesting device, atomic/molecular layer deposition

ITEM VIEW & DOWNLOAD

Evolution of catalyst particle size during carbon single walled nanotube growth and its effect on the tube characteristics

Cited 22 times inthomson ciCited 0 times inthomson ci
Title
Evolution of catalyst particle size during carbon single walled nanotube growth and its effect on the tube characteristics
Author
Harutyunyan, Avetik R.Tokune, ToshioMora, ElenaYoo, Jung-WooEpstein, Arthur J.
Issue Date
2006-08
Publisher
AMER INST PHYSICS
Citation
JOURNAL OF APPLIED PHYSICS, v.100, no.4, pp.1 - 8
Abstract
A series of Fe catalysts, with different mean diameters, supported on alumina with different molar ratios, was studied before and after carbon single walled nanotubes growth using magnetic measurements and Raman scattering techniques (laser excitation wavelengths from 1.17 to 2.54 eV) to follow changes on catalyst particle size and composition, as well as the relationship between particle size and diameter of nanotubes grown. In all cases, an increase and redistribution of the particle size after the growth was concluded based on the blocking temperature values and Langevin function analysis. This is explained in terms of agglomeration of particles due to carbon-induced liquefaction accompanied with an increase in the catalyst mobility. For large particles no direct correlation between the catalyst size and the nanotube diameters was observed.
URI
Go to Link
DOI
10.1063/1.2335396
ISSN
0021-8979
Appears in Collections:
MSE_Journal Papers
Files in This Item:
2-s2.0-33748307726.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU