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Field-induced evaporation of carbon nanotubes

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Abstract.

We report here an experimental observation of field emission from arrays of multiwall carbon nanotubes. Current densities in the range 10–30 mA/cm2 with excellent long-term stability were recorded. A detailed study of the destruction of nanotubes at extreme operation conditions is performed. We established that field evaporation of nanotubes accompanies field emission from a cold cathode at electric fields higher than 2 V/Å. Electron microscopy of the evaporation products reveals irregularly shaped carbon nanoparticles with a hollow core. The diameter of the particles is ∼20 nm. A mechanism of the process is proposed and discussed.

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Authors and Affiliations

  1. International Center for Materials Research, East 601, KSP, 3-2-1 Sakado, Takatsu-ku, 213-0012 Kawasaki, Japan, , , , , , JP

    A.G. Umnov & V.Z. Mordkovich

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  1. A.G. Umnov
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  2. V.Z. Mordkovich
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Received: 6 October 2000 / Accepted: 28 April 2001 / Published online: 27 June 2001

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Umnov, A., Mordkovich, V. Field-induced evaporation of carbon nanotubes . Appl Phys A 73, 301–304 (2001). https://doi.org/10.1007/s003390100906

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  • DOI: https://doi.org/10.1007/s003390100906

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