What Can I Do with Segmented Detectors in the TEM? 

This session is part of the "Beyond the Scope: CEMAS Discussion Series."
Just before COVID-19 restrictions, CEMAS was able to complete the installation of a ThermoFisher, probe-corrected Themis-Z™. Our Themis-Z™ delivers imaging capabilities for atomic resolution in both high-resolution TEM and STEM, at accelerating voltages of 60, 200, and 300 kV; STEM resolution down to 63 pm is possible. The system is also equipped with a S-TWIN pole piece; this provides a wide-gap for more experimental work and tilting. Our system is also equipped with a 4-segment annular detector and the EMPAD pixelated detector, enabling differential phase contrast imaging (DPC) and integrated differential phase contrast imaging (iDPC), BF/DF/ADF all-in-on, just to list a few.
Another way to describe our increased capabilities is to say we can now image light elements such as nitrogen and oxygen, we can image magnetic domains with nm level resolution, we can perform phase identification from a single image when combined with the Super-X XEDS system, ptychography, and more.
This talk will introduce the Themis-Z™ briefly and discuss the introduction of segmented detectors into CEMAS along with initial examples to show potential. Very few facilities have these detectors installed currently, and they provide an excellent opportunity for materials characterization and cutting edge research.