The Dynamic Transmission Electron Microscopy (DTEM) capability, housed within the Environmental Molecular Sciences Laboratory at Pacific Northwest National Laboratory, is new, novel, and specially designed to obtain highly time- and spatially resolved images of materials.
This capability requires small samples (~mms), typical of a transmission electron microscope, and is just coming into operation.
The DTEM can measure impacts of time down to approximately equal to 10 ns with better than nm resolution. For example, EMSL has a new (not yet started) user project seeking to use the DTEM to understand the solidification kinetics of a lightweight AlMgZn melt at high cooling rates and the kinetics of phase evolution of MgAl and alpha-Mg precipitates during heat treatment.
Much of this instrumentation is part of the EMSL national user facility, which is accessible via a user proposal process.
Name: A. Scott Lea
- Patricia Abellan, Taylor J. Woehl, Russell G. Tonkyn, W. Andreas Schroeder, James E. Evans and Nigel D. Browning (2014). Implementing in situ Experiments in Liquids in the (Scanning) Transmission Electron Microscope ((S)TEM) and Dynamic TEM (DTEM). Microscopy and Microanalysis, 20 (Suppl. 3) , pp 1648-1649. doi:10.1017/S1431927614009970.