EMSL's FEI Titan 80-300 Environmental Transmission Electron Microscope (ETEM) is a Cs-corrected field emission gun transmission electron microscope. The instrument is equipped with Corrected Electron Optical Systems GmbH double-hexapole aberration corrector (CETCOR) for image forming lens, which allows imaging with sub 0.1 nm resolution in a conventional phase contrast imaging mode. The instrument allows introduction of gaseous environment up to 20 mbars for selected gasses. The gasses are delivered into the instrument with a custom-built gas delivery system. Permanently connected gasses include: N2,He, Ar, O2, H2O, H2, CO, CO2, and CH4. The microscope is equipped with a charge-coupled device (CCD) camera (Gatan UltraScan1000 2k x 2k) for image acquisition. For acquisition in scanning transmission electron microscope imaging mode, the instrument is equipped with high-angle annular dark-field (HAADF) detector (Fishione) and annular dark-field, bright-field detectors (FEI). For elemental analysis, the instrument is equipped with an energy dispersive X-ray analysis Si(Li) detector, collection angle (less than 0.1 srad). The ETEM is used for in situ studies of catalysts, aerosols, energy materials, structural materials, geochemistry materials, and more.
- Electron beam energy: 80 to 300 keV
- Sample operating pressure: 10-7 to 20 mbar
- Sample operating temperature: Up to 1,000°C
- Gases allowed: N2, Ar, O2, H2O, CO, and CO2
- Gas composition controlled with flow controller and monitored using mass spectrometer
- Scanning/transmission electron microscopy with HAADF point-to-point resolution at 300 kV: < 0.14 nm
- High-resolution transmission electron microscope phase contrast resolution (information limit at 300 kV): < 0.1 nm
- High-tilt crystallographic and tomographic analysis
- Si(Li) X-ray energy dispersive spectrometer
- Cryogenic imaging capability
- Sample tilt range: -70°–+70°
- CCD camera: 2k x 2k
- Exit wave function reconstruction from defocus series
- Residual gas analyzer
Luo, L., Su, M., Yan, P., Zou, L., Schreiber, D. K., Baer, D. R., Zhu, Z., Zhou, G., Wang, Y., Bruemmer, S. M., et al. 2018. "Atomic Origins of Water-Vapour-Promoted Alloy Oxidation." Nature Materials, Vol. 17, Issue 6, pp. 1-6.