University of illinois Urbana-Champaign


Scanning Transmission Electron Microscope (S)TEM


Thermo Fisher FEI Tecnai G2 F20 S-TWIN STEM operates at up to 200 kV with a Schottky field-emission electron gun. Digital image acquisition using an AMT 4k x 4k CMOS camera or a Gatan Orius widefield retractable side-mount camera, as well as HAADF-STEM (High-angle annular dark-field scanning transmission electron microscopy). Various holders.


  • Electron Source: Schottky FEG
  • Detectors: Dark- (HAADF) and Brightfield STEM
  • Camera: AMT BioSprint 4k x 4k (16 Megapixel) ActiveVu CMOS camera
  • Optional camera: Gatan Orius widefield retractable side-mount 2k x 2k (7.4 Megapixel) camera
  • Holders: Single-tilt, Double-tilt, High-angle, and Custom STM tip
  • Vacuum System: ODP, IGPx3, and PVP


For additional information about this piece of equipment, see the Calendars, Contacts, and Fees pages.

Primary Contacts
Secondary Contacts
Manufacturer Thermo Fisher FEI
Equipment Model Tecnai G2 F20 S-TWIN
Location B0606B
Phone Numbers Cate: (217) 333-5493, Scott: (217) 265-5071, Room B606C: (217) 244-7973