Bulletin of the Korean Chemical Society

  • 제34권3호
  • /
  • Pages.892-898
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  • 2013
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Electron Beam Coherency Determined from Interferograms of Carbon Nanotubes

  • Cho, B. (Korea Research Institute of Standards and Science) ;
  • Oshima, C. (Department of Applied Physics, Waseda University)
  • 투고 : 2012.12.06
  • 심사 : 2012.12.26
  • 발행 : 2013.03.20
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초록

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.

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  2. Observing the Quantum Wave Nature of Free Electrons through Spontaneous Emission vol.123, pp.6, 2013, https://doi.org/10.1103/physrevlett.123.060401
  3. Vortex particles in axially symmetric fields and applications of the quantum Busch theorem vol.23, pp.3, 2013, https://doi.org/10.1088/1367-2630/abeacc