Engineers have developed a lanthanum hexaboride (LaB6) nanowire-based field emission gun that is installable on an aberration-corrected transmission electron microscope (TEM). This combined unit is able to perform atomic resolution observation at an energy resolution of 0.2 eV — the highest resolution ever recorded for non-monochromatic electron guns — with a high current stability of 0.4%.
Click here for original story, Development of a high-energy-resolution, LaB6 nanowire-based field emission gun
Source: ScienceDaily