Single-pulse arc production of carbon nanotubes in ambient air

N. Parkansky*, R. L. Boxman, B. Alterkop, I. Zontag, Y. Lereah, Z. Barkay

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

Multi-wall nanotubes (MWNTs) of carbon were produced by pulsed arc discharges between a room temperature sample and a counter-electrode, with peak currents of 7-100 A, and pulse lengths of 0.2-26 μs, in open air at selected locations on the sample. The samples were 10 × 10 mm2 graphite plates, carbon-coated 200 mesh copper grids, and Ni-coated glass slides. The counter-electrodes were graphite in the form of 1 × 4 mm2 bars or 4 mm diameter rods with a cone tip of 28°, or 0.1 mm diameter steel rods. Randomly oriented MWNTs (typically 5-15 walls) with a diameter of ∼10 nm and lengths of up to 3 μm were produced on the samples with a single 0.2 μs pulse, implying linear growth rates of up to 15 ms-1. MWNTs were produced with both polarities and with all types of counter-electrodes used when the substrate contained carbon. Near vertically oriented MWNTs were deposited on the Ni/glass samples using a graphite counter-electrode. The simplicity, rapidity and selectivity of the process may facilitate wider study and practical application.

Original languageEnglish
Pages (from-to)2715-2719
Number of pages5
JournalJournal of Physics D: Applied Physics
Volume37
Issue number19
DOIs
StatePublished - 7 Oct 2004

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