Electron beam coherency determined from interferograms of carbon nanotubes

B. Cho, C. Oshima

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A field emission projection microscope was constructed to investigate the atomic and chemical-bonding structure of molecules using electron in-line holography. Fringes of carbon nanotube images were found to be interferograms equivalent to those created by the electron biprism in conventional electron microscopy. By exploiting carbon nanotubes as the filament of the electron biprism, we measured the transverse coherence length of the electron beam from tungsten field emitters. The measurements revealed that a partially coherent electron-beam was emitted from a finite area.

Original languageEnglish
Pages (from-to)892-898
Number of pages7
JournalBulletin of the Korean Chemical Society
Volume34
Issue number3
DOIs
Publication statusPublished - 2013 Mar 20

Keywords

  • Carbon nanotube
  • Coherence
  • Field emission
  • Interferogram
  • Projection microscope

ASJC Scopus subject areas

  • Chemistry(all)

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