Fullerene and nanoparticle formation in carbon cathodic arc deposition

Manish Chhowalla, A. I. Munindradasa, G. A J Amaratunga

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report on a method for detecting C60 and other C2n molecules in the vapor phase during their initial growth stage. The technique, which utilizes a Langmuir probe, was originally proposed by Fukuzawa et al. [T. Fukuzawa, M. Shiratani, and Y. Watanabe, Appl. Phys. Lett. 64, 3098 (1994)] for the detection of dust particles in silane plasmas. By measuring the positive and negative saturation currents in the afterglow plasma, the mass ratio of negative and positive ions can be determined. We found that a M- /M+ = 56±10 occurs only for discharge times greater than 0.5 s. As most of the positively charged species are expected to be singly charged carbon, a mass ratio of 56 is close enough to be attributed to the C60 molecule, in agreement with mass spectroscopy results.

Original languageEnglish
Pages (from-to)3233-3235
Number of pages3
JournalApplied Physics Letters
Volume70
Issue number24
Publication statusPublished - Jun 16 1997

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mass ratios
fullerenes
arcs
nanoparticles
carbon
electrostatic probes
afterglows
positive ions
silanes
negative ions
molecules
mass spectroscopy
dust
vapor phases
saturation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Chhowalla, M., Munindradasa, A. I., & Amaratunga, G. A. J. (1997). Fullerene and nanoparticle formation in carbon cathodic arc deposition. Applied Physics Letters, 70(24), 3233-3235.

Fullerene and nanoparticle formation in carbon cathodic arc deposition. / Chhowalla, Manish; Munindradasa, A. I.; Amaratunga, G. A J.

In: Applied Physics Letters, Vol. 70, No. 24, 16.06.1997, p. 3233-3235.

Research output: Contribution to journalArticle

Chhowalla, M, Munindradasa, AI & Amaratunga, GAJ 1997, 'Fullerene and nanoparticle formation in carbon cathodic arc deposition', Applied Physics Letters, vol. 70, no. 24, pp. 3233-3235.
Chhowalla, Manish ; Munindradasa, A. I. ; Amaratunga, G. A J. / Fullerene and nanoparticle formation in carbon cathodic arc deposition. In: Applied Physics Letters. 1997 ; Vol. 70, No. 24. pp. 3233-3235.
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