ELECTRON MICROSCOPE PHASE ENHANCEMENT

摘要

A microfabricated electron phase shift element (100) is used for modifying the phase characteristics of an electron beam (410) passing though its center (190), while not affecting the more divergent portion of an incident beam. One application of the element is to increase the contrast of an electron microscope for viewing weakly scattering samples while in focus. Typical weakly scattering samples include biological samples such as macromolecules, or perhaps cells.