Using DualBeam to Prepare the Highest Quality Samples for Atomic Scale HR-S/TEM

LaB6 emitters are widely used in electron microscopy as high brightness electron sources, owing to their favorable properties for thermionic emission: low work function and high melting point. The emitter consists of a LaB6 single crystal with a carefully shaped tip. This case study offers an unprecedented characterization of a worn-out LaB6 emitter down to the atomic level.