MIDI-STEM Setup (IMAGE)

DOE/Lawrence Berkeley National Laboratory

MIDI-STEM Setup

Caption

This representation shows a Berkeley Lab-developed technique called MIDI-STEM (at right), and conventional STEM (at left) that does not use a ringed object called a phase plate. In MIDI-STEM, an interference pattern (bottom right) introduced by the phase plate (top right) interacts with the electron beam before it travels through a sample (the blue wave in the center). As the phase of the sample (the distance between the peaks and valleys of the blue wave) changes, the electrons passing through the sample are affected and can be measured as a pattern (bottom right).

Credit

(Colin Ophus/Berkeley Lab, <i>Nature Communications<i>: 10.1038/ncomms10719)

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