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TEM: Thermo Fisher Spectra Double-Corrected Transmission Electron Microscope

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SNSF has successfully commissioned the new state-of-the-art Thermo Fisher Spectra 300 monochromated, double-corrected scanning transmission electron microscope in June 2023. The main features of the TEM are:

  • Accelerating Voltages at 30, 60, 80, and 300 kV
  • High Brightness Schottky field emission gun ( X-FEG)
  • Monochromator
  • Cs CETCOR/S-CORR double correctors
  • Advanced STEM imaging, 4k×4k STEM data acquisition, EMPAD, 4D STEM
  • SuperX energy dispersive spectroscopy (EDS ) detectors
  • Ceta-S camera with speed enhancement capabilities
  • Gatan K3 camera for low dose imaging
  • Electron energy loss spectroscopy (EELS) with dual EELS GIF continuum spectrometer
  • TEM, STEM, and EDS tomography with acquisition, reconstruction (Inspect3D) and analysis (Avizo) softwares

Instrument Resolution:

  • Information Limit  (TEM mode): 0.7 Å
  • Probe resolution (STEM mode): 0.5 Å
  • Energy resolution at 300 kV (with monochromator): 110 meV
  • Energy resolution at 60 kV (with monochromator): 20 meV

Training Sign Up

TEM Staff has started training users on various techniques: Starting from basic alignments to advanced techniques such as monochromator tuning in Ulti/Opti-Mono modes, 4D-STEM, etc. The training is open for users with prior TEM experience, preferably on other ThermoFisher TEMs that are available on campus. Anyone interested in getting trained on the Spectra, email the TEM staff at .