Printing gel-like catalysts for the directed growth of multiwall carbon nanotubes

Hannes Kind, Jean Marc Bonard, László Forró, Klaus Kern, K. Hernádi, Lars Ola Nilsson, Louis Schlapbach

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

Microcontact printing is used to transfer an Fe(III)-containing gel-like catalyst precursor from a hydrophilized elastomeric stamp to a substrate. The catalytic pattern activates the growth of multiwall carbon nanotubes using chemical vapor deposition of acetylene. Our results show that the choice of the catalyst is of extreme importance. Most of the aqueous and ethanolic Fe(III) inks used give rise to drying effects on the stamp surface, which lead to the formation of islands of the catalyst within the pattern. To avoid these shortcomings, we developed a catalyst precursor, which has better performance on the stamp and as a catalyst on the substrate. Simple aging of the ethanolic Fe(III) ink results in a polymerized gel-like catalyst, which can be printed homogeneously on the substrate with excellent contrast. Changing the concentration of the catalyst in the ink allows the density of the carbon nanotubes in the film to be tuned. A scanning anode field emission microscope was used to investigate the microscopic field emission properties of the samples. The emission images reproduce the topographical contrast nicely and prove the high quality of the patterning process.

Original languageEnglish
Pages (from-to)6877-6883
Number of pages7
JournalLangmuir
Volume16
Issue number17
DOIs
Publication statusPublished - Aug 22 2000

Fingerprint

Carbon Nanotubes
printing
Printing
Carbon nanotubes
Gels
carbon nanotubes
gels
catalysts
Catalysts
inks
Ink
field emission
Substrates
Field emission microscopes
Acetylene
acetylene
Field emission
drying
Chemical vapor deposition
Drying

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Kind, H., Bonard, J. M., Forró, L., Kern, K., Hernádi, K., Nilsson, L. O., & Schlapbach, L. (2000). Printing gel-like catalysts for the directed growth of multiwall carbon nanotubes. Langmuir, 16(17), 6877-6883. https://doi.org/10.1021/la0001880

Printing gel-like catalysts for the directed growth of multiwall carbon nanotubes. / Kind, Hannes; Bonard, Jean Marc; Forró, László; Kern, Klaus; Hernádi, K.; Nilsson, Lars Ola; Schlapbach, Louis.

In: Langmuir, Vol. 16, No. 17, 22.08.2000, p. 6877-6883.

Research output: Contribution to journalArticle

Kind, H, Bonard, JM, Forró, L, Kern, K, Hernádi, K, Nilsson, LO & Schlapbach, L 2000, 'Printing gel-like catalysts for the directed growth of multiwall carbon nanotubes', Langmuir, vol. 16, no. 17, pp. 6877-6883. https://doi.org/10.1021/la0001880
Kind, Hannes ; Bonard, Jean Marc ; Forró, László ; Kern, Klaus ; Hernádi, K. ; Nilsson, Lars Ola ; Schlapbach, Louis. / Printing gel-like catalysts for the directed growth of multiwall carbon nanotubes. In: Langmuir. 2000 ; Vol. 16, No. 17. pp. 6877-6883.
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