Electron holography of field-emitting carbon nanotubes

John Cumings, A. Zettl, Martha McCartney, John Spence

Research output: Contribution to journalArticle

128 Scopus citations

Abstract

The magnitude and spatial distribution of the electric field surrounding individual field-emitting carbon nanotubes was determined using electron holography performed in situ inside a high resolution transmission electron microscope. It was found that the electric field and the associated field emission current was concentrated precisely at the tips of the nanotubes and not at other nanotube defects. Observations showed that the electric field magnitude and distribution were stable in time, even in cases where the nanotube field emission current exhibited extensive temporal fluctuations.

Original languageEnglish (US)
Article number056804
Pages (from-to)568041-568044
Number of pages4
JournalPhysical Review Letters
Volume88
Issue number5
DOIs
StatePublished - Feb 4 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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