FEI Tecnai Transmission Electron Microscope (TEM)

The Transmission Electron Microscopy TEM laboratory is a state-of-the-art facility equipped with a FEI Tecnai G2 F20 X-Twin transmission electron microscope and a FEI FIB200TEM Focused Ion Beam device for specimen preparation. The laboratory provides powerful techniques for characterization of crystal structure, microstructures and chemical composition of materials down to a near atomic level.

Facilities TEM and attachments:

  • FEI Tecnai G2 F20 X-Twin (200 kV)
  • FEG electron source
  • HAADF Detector
  • Gatan Tridiem (EELS, EFTEM)
  • EDAX energy dispersive X-ray spectroscopy system

TEM sample holder:

  • Gatan double-tilt holder
  • Single-tilt tomography holder
  • Compustage low background double-tilt holder
  • Single-tilt rotation holder
  • Gatan double-tilt liquid nitrogen holder
  • Gatan heating holder

Liquid Cell TEM

Liquid-phase transmission electron microscopy (LP-TEM) allows for in-situ observations of the dynamic behaviour of materials in liquids at the highest spatial and temporal resolution in controlled environments (e.g. fluid properties and temperature). The option to observe such processes in real time has only been accurate enough to apply it to complex systems in the last 5 years. Nevertheless, electron beam induced changes in pH, nucleation rate and radiolysis can be a challenge and must be accounted for. The thickness of the liquid layer must also be considered; thin enough for the best possible spatial resolution but thick enough to hold a sufficient volume a fluid for scalable physical and chemical processes.

More details can be found here.

 

 

Contact (TEM)

Richard Wirth
Scientist
Dr. Richard Wirth
Interface Geochemistry
+49 331 288-1371
Profile

Contact (TEM, LC-TEM)

Helen Freeman
Scientist
Dr. Helen Freeman
Interface Geochemistry
Telegrafenberg
Building C, Room 122
14473 Potsdam
+49 331 288-21475
Profile