CEMAS houses six TEM/STEM microscopes.  There are two aberration-corrected TEM/STEM systems – A Themis Z optimized for sub-Angstrom spatial resolution imaging and analysis, and a Titan 60-300 optimized for the investigation of soft and bio-materials with both high resolution imaging and the ultimate in chemical analysis capabilities.  There are two cryo microscopes.  The Krios cryoTEM has direct electron detectors, spectrum imaging and tomography while the Glacios includes microED capabilities.  CEMAS also has a Tecnai F20 analytical FEG TEM/STEM optimized for EDX and EELS and a Tecnai 30 300kV TEM/STEM optimized for crystallographic imaging. 

Quantitative STEM study of the atomic scale reconstruction alleviating polarity conflict at KTaO3/GdScO3 interface. Jinwoo Hwang, STEM imaging of KTaO3 /GdScO3 on the probe corrected Titan microscope, in collaboration with Ambrose Seo, University of Kentucky.


portrait of Hendrik ColijnMr. Hendrik "Henk" Colijn portrait of Robert E.A. WilliamsDr. Robert E.A. Williams


  • Energy-dispersive X-ray Spectroscopy (EDX) (EDS)
  • Electron energy loss spectroscopy (EELS)


  • High school student uses CEMAS experience to guide future career

    Ohio State’s Center for Electron Microscopy and Analysis (CEMAS) enables academic, non-profit, and industry partners to “see” more than ever before. And that vision extends to the next generation of microscopists.  Kendall Gonya, a junior at St. | LEARN MORE
  • CEMAS team contributes to MRS Bulletin

    Did you pick up the December edition of MRS Bulletin? We hope you did. CEMAS Director David McComb served as a guest editor for the publication and authored a pair of articles. One of which was co-authored by Robert Williams , the assistant director... | LEARN MORE
  • Scientists see defects in potential new semiconductor

    Scientists have discovered an important defect in a potential semi-conductor, which someday could help power high-powered technologies like trains or machines used in the defense industry. A research team has reported seeing, for the first time, atomic... | LEARN MORE

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