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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 3
BKCSDE 34(3)
March 20, 2013

Title	Electron Beam Coherency Determined from Interferograms of Carbon Nanotubes
Author	B. Cho*, C. Oshima
Keywords	Field emission, Interferogram, Projection microscope, Coherence, Carbon nanotube
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.
Page	892 - 898
Full Text	PDF

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