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FEI Talos F200X: An Operando Scanning Transmission Electron Microscope

Contact: Huolin Xin

FEI Talos F200X is a high-resolution analytical scanning/ transmission electron microscope (S/TEM) that is routinely operated at 200 keV. This microscope is equipped with an X-FEG electron source module that gives a source brightness four times that of a Schottky FEG emitter. This high source brightness enables near diffraction limited imaging and dramatically improves the spectroscopic performance. In addition to the extra-bright gun, it combines outstanding high-resolution scanning/transmission electron microscope and TEM imaging with a four-quadrant 0.9-sr energy dispersive X-ray spectrometer (EDS) for elemental and compositional mapping. Talos F200X allows for the fastest and most precise EDS analysis in all dimensions, along with the best HRTEM imaging with fast navigation for in situ microscopy. The instrument is custom designed to have an objective-area pressure interlock and differential pumping capabilities close to the gun to protect the field emitter from any gas leakage event. Due to this protection feature, gas and liquid Operando holders can be readily used in this system to study catalysts’ responses to gas environments, nanostructure nucleation and growth, etc.

Example Images & Spectra  

FEI Talos F200X

FEI Talos F200X

FEI Talos F200X

FEI Talos F200X

FEI Talos F200X

  • High-resolution imaging
    • STEM resolution of 1.36 Å at 200 keV
    • TEM Young’s Fringes visible at < 1.2 Å
    • 1.58 nA of analytical probe current with 0.9 nm beam size
  • Ability to provide up to 1 bar of gas / 400°C with gas holder
  • Movable gas delivery system to allow iso-pressure injections of complex gas streams
  • High frame rate with the 16-megapixel Ceta camera
  • Full analytical capabilities:  energy dispersive spectroscopy, electron energy loss spectroscopy (future upgrade)
  • Electron tomogram acquisition and reconstruction